1. This guys is talking non-sense 2. That dude with car flipping sticked his arm out thinking he was gonna push back...Feel bad for his arm. probably broken.
About 2... maybe he got that 'slowmo vision' and decided to give the ground a high-five, just for fun, as he waited to finish slowly rolling upside down
4x4 have an extra transfer case with extra gears( usually 4L, 4H and 2H)and yes, the rear and front axle output shafts are locked together. The vehicle can function as a real weel drive one in 2H, as an AWD in 4H and with a reduced gearing ratio in 4L. It usually has extra lockable differentials engaged or disengaged manually or electricaly by a button. AWD usually has the power transfered to the front weels via cv axles and to the back weels via an output shaft and differential. The diff can be lockable or lsd but that's irrelevant. It doesn't allow extra low gears. The front wheels can be disengaged and the car functions as a RWD in some cars. Of course ECU's can play a role into power output to each wheel in cars that have traction control. Awd is more common, it's less complex, lighter and less expensive. Except from heavy off roading it's functionally as good as 4x4 since you don't need extra low gears and an overall bulkier transmission. 4x4 is used in heavy off roading as I said. The extra low gear helps on steep slopes, overcoming obstacles or slippery terrains. Same with diff lock, it's only used when is required, like when you get stuck in mud and need all wheels to turn to dig into the mud until one grips for exemple. It affects handling a lot. Also, 4x4 seems to be more overbuilt since the forces applied on it's components are higher.
AWD is MORE complex than 4WD because there are usually at least 1 computer controlled clutch pack to distribute the torque front to rear in various percentages. Some systems even have computer controlled clutch packs to distribute the torque side to side. 4WD is simply mechanically connecting the front and rear axles. Even with low range transfer cases, it's just another gear box that can be manually controlled. They might have locking center, rear and/or front differentials as well. This is why 4WD is superior in off roading because all 4 wheels receive torque all the time. For all weather street driving, I would choose AWD. For off-roading, 4WD is the better system.
Lots of misinformation here even in the comments. Both systems are far more complex now blurring the lines of one from the other. There is permanent 4WD, 4WD, and AWD. There is even locking action in 4WD. Without getting too indepth as there is not enough room. One big shortfall of AWD is it often sends power/ drive in modern systems to the wheels w/ grip which could work against you if that tire(s) are buried in snow or mud. 4WD now has permanent and regular so to speak. Bottom line a low gear transfercase is common among conventional 4WD and not permanent 4WD or AWD in most cases. Too much to go into locking and open differentials among 4WD. Best wishes to all. I am now an AWDer.
What are you mumbling here. The best AWD are the Subaru's. The Symmetrical AWD are very good in all weather. When 1 tire or 2 stuck in mud, it'll send the power to the unstuck tires so the vehicle can move forward. Better than a 4 wheel drive does. You should see videos of a subaru outback outperforms a ford & mitshubishi 4x4.
@@TheUser-eg1yl The deal here is that this short is AI assembled and voiced word salad, and it's not really worth the effort to pick apart and clarify the vomited nonsense in a comment that's less than 500-1000 words. It'd be easier to have you do some search engine-ing and add the wrinkle to your grey matter on your own.
@@TheUser-eg1yl There is no difference. They're just colloquial terms that can refer to any of the plethora of many different designs of 4wd systems. He's generally referring to AWDs as Haldex based, but not only is that incorrect, but his description of both is wrong. Haldex-based systems can work very well offroad too. His description of 4wd refers to a "central diff lock", that's a completely separate feature which may or may not be present even on traditional/none-haldex-based 4x4s.
Uhh… every manufacturer has their own naming scheme, most 4x4 don’t have locking differential, AWD is now just a blanket term for anything that as all 4 wheels connected to the drive shaft whether or not it is even capable of moving a tire that has grip if one tire lacks traction, sometimes things aren’t even consistent between trim levels of same vehicle. Only way to test is to have 3 of the 4 wheels on rollers and see if the 4th wheel can move the vehicle off the rollers, tested for each tire. The vehicle I drive, Suzuki SX4, has a switch for 2wd, AWD Auto (only good for for getting started from a stop in snow/ice), AWD Lock necessary for mud or any sort of soft ground because Auto requires a rotation or two of wheel spin before it will activate for like 2 seconds. Lock is fully locked, absolutely awesome if you want to maintain a power slide in snow, trying to drive in a tight circle in a few inches of snow with Auto is wildly inconsistent as “AWD” is constantly activating and deactivating. As long as you know what setting to use and when, it’s great.
I think people are giving answers according to the make of automobiles they are familiar with. Standards might even be different within the same automakers when comparing older model vehicles with newer model vehicles.
Even they call AWD ... some vehicles send power front or rear as needed... the system isn't working all the time ... except Subaru simetrical AWD ... this works all time
This guy doesn't know what he's talking about. The "manual" AWD 2000 Subaru Impreza 2.5 RS, as a 50/50 torque split (50% power front, 50% power back). The ECU does not transmit power from front and back, like the automatic version does. So yeah, some AWD cars you know exactly how much power is at certain wheels. But that's just a minor difference, others here have already stated what the difference between 4WD and AWD is.
That's not the norm tho. Subaru used to be concerned about performance & you could select how you wanted power split front to rear, but most "awd" cars don't state a figure. Most modern "awd" is from 100/0 to 80/20. Bmw is unique with a rear bias but even audi has watered down the Quatro name with part time awd. Most manufacturers have an awd system that's usually fwd & 20-30% of power is randomly sent to rear, but the driver has no control of this.
Your Spreading Misinformation ,Check Your Facts a off roader Mode 4x4 engages Diff locks Between The Left and Right Wheels On The SAME AxLE So When One Side Lift's Of The Ground and Doesn't Free Spins ALL The Power , Instead The Opposite Side Continue's To Rotate. The Second Is For When All 4 Remain On The Ground And Limited Slip Diff Or A Elrctronic Equivelant Lowers The Power To Most Lost Traction.
Maybe I'm stupid, but doesn't diff lock needs to be activated and can be turned off in 4x4 vehicles? The main difference to me apears to be that it has extra low and high gears. Edit: Diff lock and 4x4 or AWD have nothing to do with eachother, it's engaged/ disengaged separately as I said. 4x4 doesn't have permanent diff lock if that's what you say.
@@cristianandrei5462 you are correct. 4wd doesn't necessarily include locking diffs. gearing is probably the most-important difference between the systems.
@@asdfbeau There is no damn difference between the systems. AWD and 4WD are different names for the same thing which can have a dozen of configurations. You can have it permanent with or without locks, you can have it permanent with clutch type limited slip diffs, torsen limited slip diffs, active differentials or a combination of them. You can have permanent rear with engageble front or permanent front with engageble rear which in such case has full lock betweeen fron and rear (no center diff), but you can then have manual locks front or rear, clutch type limited slip, torsen and so on. You can also have Viscous coupling unit for center diff and then four different types of differentials front and rear. Most four/all wheel drive vehicles do not have any locks. Heavy duty off road vehicles require manual 100% locks, at least center and rear, while rally cars typically use 3 clutch type limited slip differentials or active differentials (clutch type with electronically controlled mechanism that engages clutches in real time). Sometimes exact same model has different configuration depending on the market. For instance, some Lancer versions that in Japan and Europe received 3 active diffs, for US market had same name but center Torsen and two clutch type limited slip diffs.
I always thought the best option, other than an electric motor at each wheel, is an All Wheel Drive system, with strong Limited Slip Differentials front & rear. But diff locks offroad are just amazing. So much so, if I can't limit wheel speed electrically, with motors at each wheel, then I'd rather just have 1 or more motors at the beginning of a 4x4 transmission. At the clutch or flywheel, if I was to make a homemade electric car from a conversion kit.
Since nobody saw fit to mention it the true difference is simple. AWD has an extra differential or other uncoupling method to allow the front and rear wheels some difference in speed so it can be utilized on pavement. 4wd systems don't have this so driving on dry pavement with 4wd engaged will create wheel hop and axle wrap when turning. While turning all 4 wheels of a vehicle are moving at different speeds so you need a differential in each axle plus one or something similar between the front and rear. There are true center differentials, viscous fluid couplers and all different manner of devices to fill this center differential role.
As I always understood it, an AWD system is two wheel drive (usually front wheel biased) under normal conditions, but will send up to 50% of the power to the other wheels when necessary (such as slippery conditions), determined by sensors in the computer. 4WD is a selectable option that distributes power 50/50 to all 4 wheels when selected, and is 2WD when not selected (usually rear wheel biased). AWD is a more complex and modern system, 4WD has been around a long time, however advancements have been made such as no longer needing to exit the vehicle to lock the wheels to use 4WD. Where he did ger it right is 4WD is typically a superior off roading system, at the expense of fuel economy as compared to AWD. You also tend to see true selectable 4WD in trucks and AWD in cars and car based SUVs.
You got the fuel issue wrong. And 4WD is for reliable, stable off roading and even hauling off road. AWD is multi-purpose, great for weather regions, good for dirt roads, good for getting through slippery conditions. Good for people who need power to front and rear sometimes, but not good for people who work, live or play on extreme undulating, off road situations.
The speaker is close, but he doesn't quite understand it. AWD distributes power to both front and rear drive differentials through a center differential controlled by the ECU. 4WD does the same thing except through a transfer case that is manually controlled instead of a center differential.
The heart of the matter is the differential that allows the left and right (front and/or rear) wheels to spin at different speeds. This is necessary for road cars that want to turn around (tight) corners without scruffing the tires. When a car with a differential (All Wheel Drive) goes offroad it can send most of the power to the wheel with the least grip. This is bad. My simple lawn tractor with rear differential drive could get hung up on bumps, with only three wheels on the ground, where it would just spin the rear wheel that had no traction. (My Zero Turn doesn't have this problem.) 4 Wheel Drive mechanically locks the left and right wheels together to make sure that both left and right wheels receive power. But this is bad for turning circles on pavement. I suppose electronic control could figure out all these conditions, but it historically hasn't. Maybe in the future it always will.
There is no difference between AWD and 4WD, they're just colloquial terms. This video's talking nonsense. Your description of Haldex-based systems is also wrong. When accelerating hard they will by default send all the power to the rear wheels yes, but only if they have good grip. If it senses the real wheels slipping then it will redirect power to the front. I've driven Haldex 4th and 5th gen systems in snow with summer tyres, and it's incredible. It can get itself out of ditches and up steep hills where a 2wd wouldn't stand a chance. It does vary manufacturer to manufacturer though, there are some bad ones out there (like Honda CRV's fake 4wd).
A four-wheel-drive vehicle has a slightly lower gear ratio in the front differential than the rear differential of the vehicle. This in turn causes the front wheels to spin slightly faster than the rear wheels when the transfer case is locked in four-wheel-drive. In soft sand or deep snow the vehicle will have a tendency to be able to climb out of the loose sand or snow. Conversely, with an all-wheel-drive vehicle, both front and rear differentials have the same gear ratio.. if you get them in mud or soft sand or deep snow, they will bury themselves. All wheel drive vehicles are best for slippery surfaces that are firm like a road that has a slight amount of snow or ice on it. They are not designed for off-road use for this reason. They are very good on dry surface roads with performance oriented vehicles on a race track. Many newer cars with all wheel drive have the capability to shut the system off when not needed to save fuel. Such as Toyota, for example.
AWD does not power all 4 wheels "all the time" or simultaneously. It powers 2 wheels and can transfer power to the front or rear under low traction scenarios. 4WD can power all 4 wheels simultaneously and uses a center differential to be able to do so. 4WD also uses more fuel than AWD, because it does power all wheels
Omfg people, in the simplest terms AWD is affectively all wheels have some amount of torque at any given time depending on terrain and traction, 4WD is selectable and when selected has the truest form of all wheels receiving same amount of torque no matter the conditions...Take my 76' F150, it has 4spd manual gearbox, it has transfer case for 4WD also has manual lockout front hubs, if I want 4WD in that truck I have to lock front hubs, throw the manual stick for transfer case into one of 3 positions, normally it's in 2WD, there is also 4L for low and 4H for high range, I'll select 4H for normal towing or driving conditions offroad, max speed 45mph, I'll select 4L for heavyweight heavy-duty situations such as pulling stuck tractors or vehicles, either way once in 4WD all wheels spin together unless yoy have some really loose limited slip differential than it becomes more of a 3WD lol, now AWD vehicles do all these steps for you automatically but the torque distribution is somewhat unreliable for any heavy-duty anything, great for offroad normal driving or winter conditions and allows you to have great traction for almost anything, but don't expect to ever be pulling and towing heavy-duty anywhere for very long, AWD constantly distributes varying amounts of torque between all wheels and as such can actually burn up the tranny or transfer case or even the differentials very quickly under extreme loads or conditions, literally experienced this a few times especially in the domestic SUV market, hope this helps settle any more questions or arguements, final results, true 4WD=heavy-duty work horse with all wheels receiving same amount of torque all the time while in use... AWD=light duty, varying torque distribution to all wheels at any given time depending on what the ECU is reading for terrain or traction, great all round traction no matter conditions does everything for you, somewhat finnicky as far as reliable and predictable traction control when you want the control, I've done various tests over the years with my 2015 toyota Rav4 which is AWD and comparing it to my 2006 or even my 76' F150's it has great all round traction never been stuck but I can't really do spin outs or cyclones in the snow, multiple systems working against my inputs and the traction loss, yet my trucks I can whirlwind a snowy dust storm like the Tasmanian devil from looney toons lmao, and feels very easy controlled and well within my abilities to do...I always prefer my own control over computer control, but I absolutely love the Yota for safe reliable every weather condition driving especially with my kids and others, also saves me an ass load of money on fuel expenses lmao🤗🤗🤗
I love how everyone here is saying that this video is wrong and then they proceed to all disagree with everyone else in the comments as to what the difference between AWD and 4WD is. These systems have become so complex that black and white definitions have become nearly impossible at this point.
They've not become complex, there is no difference. AWD and 4WD are just colloquialisms. Marketing terms and casual conversations. There are thousands of different types of 4WD/AWD (name doesn't matter) systems out there, all having different characteristics.
In simpler words You can't change if all wheels or two wheels get power in awd You can change which wheels get power in 4wd 4wd is also another term for 4x4
AWD is an all-wheel drive system where a computer is responsible for connecting the rear-wheel drive. 4WD is an all-wheel drive system where the person himself is responsible for connecting the rear-wheel drive, for example, there is a button on the dashboard to connect the rear-wheel drive.
4wd is no better unless you have diff locks, open diffs on most 4wds. traction control on just about every awd. suspension geometry, ride height and wheels it what sets them apart, add diff locks and you have an off road beast.
@@fabricefauconnier2358Quattro is not permanent 50/50. Its front biased unless more traction is needed more power is sent to the rear. Or some models come with dynamic mode that can give it a true 50/50 spilt when in that mode.
wrong, all = 4. this is the same. this is more complex than only using 2 terms to explain. locks and divider gearboxes cant explained just with these 2. its stupid to do that
Awd has center diff. 4wd usually doesnt... ecm doesn't control where the power goes, the bumblebee does, but only on haldex type awd.... my torsen awd doesn't do that crap
As far as i see it due to companies wrongly naming there systems so people buy it .... The terms has been changed from its orginal functions ... Now there are (4x4)mechanically locks diffs and splits power with transfer case to 2wheels or all 4wheels, (4wd) uses transfer case to split power to 2wheels or all 4wheels but has no locking of diffs and (Awd) sends power to all 4wheels all the time with some systems using computers to vary how much power goes to either front or rear but never 100% either direction
4WD locks the front and rear drivelines together. AWD allows differentiation between the front and rear drivelines. That's the difference. BOTH send power/torque to the front and rear drivelines. A vehicle can have both 4WD and AWD...and then some. Modern vehicles often use Traction Control to make their drivetrains grab even better. Some also use traction axle-diffs, like lockers or LSDs.
What's really awesome is some crawler and sand recovery builds use diffs where you can lock in just the front shaft. Then you can lock just the rear brakes to either pivot the front or sink the tires into the sand for more traction when winching.
Lie. It's just different names for the same thing. There's some 28 different four/all wheel drive systems depending on combination of differential types used, and then more if we count systems that eliminate some differentials altogether, such as Group B rally car systems that did not have center diff at all.
@@piotrmalewski8178 not if you’re part of the auto industry most parts people or technicians would have an understanding of these systems when year make and model is applied it doesn’t matter what someone may get call them
4wd is for most slippery conditions not just extreme, it has something called a transfer case to distribute the power to one or more wheels front to back with a front and rear shaft driven axal, to keep some power on a wheel all the time, very poor explanation thank you
AWD is a FWD layout turned 90 degrees, so what were the axles are now driveshafts, sending power to the front and rear axle. Since AWD is on all the time, you need to add some "give" in the system, so the driveshafts run off a 3rd differential. If you tried to run 4WD on the highway, eventually, you'd break one of the gears in the transfer case, since the gears are manually locked to the driveshafts and one of them would eventually break due to excessive stress.
Ok now I'm tired reading all of this AWD. 4×4 thing. Just to be exact the fox has rabies so the guy feeding backing up since the rabid fox approaching without any control. The fox doesn't want the chicken he wants the person
This is absolute bollocks. You're talking about the DIFFERENT TYPES OF 4WD /AWD SYSTEMS. There's no technical difference between the two. Also modern clutch-based all wheel drives can work very well offroad. You're description of 4wd refers to a "central diff lock", that's a completely separate feature which may or may not be present even on traditional/none-haldex-based 4x4s.
1. This guys is talking non-sense
2. That dude with car flipping sticked his arm out thinking he was gonna push back...Feel bad for his arm. probably broken.
😂😂😂😂
Darwin award
I CAN SAVE THIS WITH THE POWER OF... MY HAND!!!!
😅😅😅😅😅😅😅😅thanks for highlight. Wouldn't have noticed it otherwise 😊😊😊 from Malaysia 🇲🇾🇲🇾🇲🇾🇲🇾
About 2... maybe he got that 'slowmo vision' and decided to give the ground a high-five, just for fun, as he waited to finish slowly rolling upside down
4x4 have an extra transfer case with extra gears( usually 4L, 4H and 2H)and yes, the rear and front axle output shafts are locked together. The vehicle can function as a real weel drive one in 2H, as an AWD in 4H and with a reduced gearing ratio in 4L. It usually has extra lockable differentials engaged or disengaged manually or electricaly by a button.
AWD usually has the power transfered to the front weels via cv axles and to the back weels via an output shaft and differential. The diff can be lockable or lsd but that's irrelevant. It doesn't allow extra low gears. The front wheels can be disengaged and the car functions as a RWD in some cars. Of course ECU's can play a role into power output to each wheel in cars that have traction control.
Awd is more common, it's less complex, lighter and less expensive. Except from heavy off roading it's functionally as good as 4x4 since you don't need extra low gears and an overall bulkier transmission.
4x4 is used in heavy off roading as I said. The extra low gear helps on steep slopes, overcoming obstacles or slippery terrains. Same with diff lock, it's only used when is required, like when you get stuck in mud and need all wheels to turn to dig into the mud until one grips for exemple. It affects handling a lot. Also, 4x4 seems to be more overbuilt since the forces applied on it's components are higher.
My '13 Exploder has AWD and has a low range button.
In short 4wd is more selective
AWD is MORE complex than 4WD because there are usually at least 1 computer controlled clutch pack to distribute the torque front to rear in various percentages. Some systems even have computer controlled clutch packs to distribute the torque side to side. 4WD is simply mechanically connecting the front and rear axles. Even with low range transfer cases, it's just another gear box that can be manually controlled. They might have locking center, rear and/or front differentials as well. This is why 4WD is superior in off roading because all 4 wheels receive torque all the time. For all weather street driving, I would choose AWD. For off-roading, 4WD is the better system.
My girlfriend like my 13" exploder@@KyleHilton-qh6nr
Lots of misinformation here even in the comments. Both systems are far more complex now blurring the lines of one from the other. There is permanent 4WD, 4WD, and AWD. There is even locking action in 4WD. Without getting too indepth as there is not enough room. One big shortfall of AWD is it often sends power/ drive in modern systems to the wheels w/ grip which could work against you if that tire(s) are buried in snow or mud. 4WD now has permanent and regular so to speak. Bottom line a low gear transfercase is common among conventional 4WD and not permanent 4WD or AWD in most cases. Too much to go into locking and open differentials among 4WD. Best wishes to all. I am now an AWDer.
What are you mumbling here.
The best AWD are the Subaru's.
The Symmetrical AWD are very good in all weather.
When 1 tire or 2 stuck in mud, it'll send the power to the unstuck tires so the vehicle can move forward. Better than a 4 wheel drive does.
You should see videos of a subaru outback outperforms a ford & mitshubishi 4x4.
This is nonsense you speak sir 😅
Then you tell me the difference
@@TheUser-eg1yl The deal here is that this short is AI assembled and voiced word salad, and it's not really worth the effort to pick apart and clarify the vomited nonsense in a comment that's less than 500-1000 words. It'd be easier to have you do some search engine-ing and add the wrinkle to your grey matter on your own.
@@TheUser-eg1yl There is no difference. They're just colloquial terms that can refer to any of the plethora of many different designs of 4wd systems.
He's generally referring to AWDs as Haldex based, but not only is that incorrect, but his description of both is wrong. Haldex-based systems can work very well offroad too.
His description of 4wd refers to a "central diff lock", that's a completely separate feature which may or may not be present even on traditional/none-haldex-based 4x4s.
When he said all wheel drive are bad in off road condition he lost me🤷🏾♂️🤣
Uhh… every manufacturer has their own naming scheme, most 4x4 don’t have locking differential, AWD is now just a blanket term for anything that as all 4 wheels connected to the drive shaft whether or not it is even capable of moving a tire that has grip if one tire lacks traction, sometimes things aren’t even consistent between trim levels of same vehicle. Only way to test is to have 3 of the 4 wheels on rollers and see if the 4th wheel can move the vehicle off the rollers, tested for each tire.
The vehicle I drive, Suzuki SX4, has a switch for 2wd, AWD Auto (only good for for getting started from a stop in snow/ice), AWD Lock necessary for mud or any sort of soft ground because Auto requires a rotation or two of wheel spin before it will activate for like 2 seconds. Lock is fully locked, absolutely awesome if you want to maintain a power slide in snow, trying to drive in a tight circle in a few inches of snow with Auto is wildly inconsistent as “AWD” is constantly activating and deactivating. As long as you know what setting to use and when, it’s great.
I think people are giving answers according to the make of automobiles they are familiar with. Standards might even be different within the same automakers when comparing older model vehicles with newer model vehicles.
Thank goodness we have another video with a voice-over explaining.
Even they call AWD ... some vehicles send power front or rear as needed... the system isn't working all the time ... except Subaru simetrical AWD ... this works all time
Only on manual Subarus though
Or the originator, quattro
This guy doesn't know what he's talking about.
The "manual" AWD 2000 Subaru Impreza 2.5 RS, as a 50/50 torque split (50% power front, 50% power back). The ECU does not transmit power from front and back, like the automatic version does.
So yeah, some AWD cars you know exactly how much power is at certain wheels.
But that's just a minor difference, others here have already stated what the difference between 4WD and AWD is.
That's not the norm tho. Subaru used to be concerned about performance & you could select how you wanted power split front to rear, but most "awd" cars don't state a figure. Most modern "awd" is from 100/0 to 80/20. Bmw is unique with a rear bias but even audi has watered down the Quatro name with part time awd. Most manufacturers have an awd system that's usually fwd & 20-30% of power is randomly sent to rear, but the driver has no control of this.
Thats lame
Your Spreading Misinformation ,Check Your Facts a off roader Mode 4x4 engages Diff locks Between The Left and Right Wheels On The SAME AxLE So When One Side Lift's Of The Ground and Doesn't Free Spins ALL The Power , Instead The Opposite Side Continue's To Rotate. The Second Is For When All 4 Remain On The Ground And Limited Slip Diff Or A Elrctronic Equivelant Lowers The Power To Most Lost Traction.
Maybe I'm stupid, but doesn't diff lock needs to be activated and can be turned off in 4x4 vehicles? The main difference to me apears to be that it has extra low and high gears.
Edit: Diff lock and 4x4 or AWD have nothing to do with eachother, it's engaged/ disengaged separately as I said. 4x4 doesn't have permanent diff lock if that's what you say.
@@cristianandrei5462 you are correct. 4wd doesn't necessarily include locking diffs.
gearing is probably the most-important difference between the systems.
@@asdfbeau There is no damn difference between the systems. AWD and 4WD are different names for the same thing which can have a dozen of configurations. You can have it permanent with or without locks, you can have it permanent with clutch type limited slip diffs, torsen limited slip diffs, active differentials or a combination of them. You can have permanent rear with engageble front or permanent front with engageble rear which in such case has full lock betweeen fron and rear (no center diff), but you can then have manual locks front or rear, clutch type limited slip, torsen and so on. You can also have Viscous coupling unit for center diff and then four different types of differentials front and rear. Most four/all wheel drive vehicles do not have any locks. Heavy duty off road vehicles require manual 100% locks, at least center and rear, while rally cars typically use 3 clutch type limited slip differentials or active differentials (clutch type with electronically controlled mechanism that engages clutches in real time). Sometimes exact same model has different configuration depending on the market. For instance, some Lancer versions that in Japan and Europe received 3 active diffs, for US market had same name but center Torsen and two clutch type limited slip diffs.
@@piotrmalewski8178 well said
@@asdfbeau if it’s ts mechanical and you set it in 4Wd it will stay in 4Wd until you select 2Wd
I always thought the best option, other than an electric motor at each wheel, is an All Wheel Drive system, with strong Limited Slip Differentials front & rear.
But diff locks offroad are just amazing.
So much so, if I can't limit wheel speed electrically, with motors at each wheel, then I'd rather just have 1 or more motors at the beginning of a 4x4 transmission. At the clutch or flywheel, if I was to make a homemade electric car from a conversion kit.
Silence for the one who broke his arm😅
Imagine one day you've got an idea 💡, and decides to share in RUclips whatever theory concocted.
Since nobody saw fit to mention it the true difference is simple. AWD has an extra differential or other uncoupling method to allow the front and rear wheels some difference in speed so it can be utilized on pavement. 4wd systems don't have this so driving on dry pavement with 4wd engaged will create wheel hop and axle wrap when turning. While turning all 4 wheels of a vehicle are moving at different speeds so you need a differential in each axle plus one or something similar between the front and rear. There are true center differentials, viscous fluid couplers and all different manner of devices to fill this center differential role.
As I always understood it, an AWD system is two wheel drive (usually front wheel biased) under normal conditions, but will send up to 50% of the power to the other wheels when necessary (such as slippery conditions), determined by sensors in the computer. 4WD is a selectable option that distributes power 50/50 to all 4 wheels when selected, and is 2WD when not selected (usually rear wheel biased). AWD is a more complex and modern system, 4WD has been around a long time, however advancements have been made such as no longer needing to exit the vehicle to lock the wheels to use 4WD. Where he did ger it right is 4WD is typically a superior off roading system, at the expense of fuel economy as compared to AWD. You also tend to see true selectable 4WD in trucks and AWD in cars and car based SUVs.
you can change differential on awd cars. awd automatically changes to rwd or fwd with speed
I still don't get it.
AWD Prius has entered the chat with 60 mpg
You got the fuel issue wrong.
And 4WD is for reliable, stable off roading and even hauling off road.
AWD is multi-purpose, great for weather regions, good for dirt roads, good for getting through slippery conditions.
Good for people who need power to front and rear sometimes, but not good for people who work, live or play on extreme undulating, off road situations.
fun fact all wheel drive was made in 1960 something some racing mob so its been out longer than most off us was born lol
The speaker is close, but he doesn't quite understand it. AWD distributes power to both front and rear drive differentials through a center differential controlled by the ECU. 4WD does the same thing except through a transfer case that is manually controlled instead of a center differential.
No, it's not the axles that make front, and rear wheels spinning. It's the diff, or 3rd member if you will.
A live, or a posi track diff will make both tires spin, otherwise one tire normally drives the power train. Not all vehicles are this way though
My 1979 Dodge W200 Powerwagon is full time 4WD due to a 3rd differential in the transfer case that can be locked. So I say it's both 4WD and AWD.
The heart of the matter is the differential that allows the left and right (front and/or rear) wheels to spin at different speeds. This is necessary for road cars that want to turn around (tight) corners without scruffing the tires. When a car with a differential (All Wheel Drive) goes offroad it can send most of the power to the wheel with the least grip. This is bad. My simple lawn tractor with rear differential drive could get hung up on bumps, with only three wheels on the ground, where it would just spin the rear wheel that had no traction. (My Zero Turn doesn't have this problem.) 4 Wheel Drive mechanically locks the left and right wheels together to make sure that both left and right wheels receive power. But this is bad for turning circles on pavement. I suppose electronic control could figure out all these conditions, but it historically hasn't. Maybe in the future it always will.
There is no difference between AWD and 4WD, they're just colloquial terms. This video's talking nonsense.
Your description of Haldex-based systems is also wrong. When accelerating hard they will by default send all the power to the rear wheels yes, but only if they have good grip. If it senses the real wheels slipping then it will redirect power to the front.
I've driven Haldex 4th and 5th gen systems in snow with summer tyres, and it's incredible. It can get itself out of ditches and up steep hills where a 2wd wouldn't stand a chance.
It does vary manufacturer to manufacturer though, there are some bad ones out there (like Honda CRV's fake 4wd).
A four-wheel-drive vehicle has a slightly lower gear ratio in the front differential than the rear differential of the vehicle. This in turn causes the front wheels to spin slightly faster than the rear wheels when the transfer case is locked in four-wheel-drive. In soft sand or deep snow the vehicle will have a tendency to be able to climb out of the loose sand or snow. Conversely, with an all-wheel-drive vehicle, both front and rear differentials have the same gear ratio.. if you get them in mud or soft sand or deep snow, they will bury themselves. All wheel drive vehicles are best for slippery surfaces that are firm like a road that has a slight amount of snow or ice on it. They are not designed for off-road use for this reason. They are very good on dry surface roads with performance oriented vehicles on a race track. Many newer cars with all wheel drive have the capability to shut the system off when not needed to save fuel. Such as Toyota, for example.
Honda Ridgeline as a AWD with combo in 4xDrive
Drawback of 4x4 is that you miss turning rate because of friction. And also tire wair is increased a lot
AWD does not power all 4 wheels "all the time" or simultaneously. It powers 2 wheels and can transfer power to the front or rear under low traction scenarios. 4WD can power all 4 wheels simultaneously and uses a center differential to be able to do so. 4WD also uses more fuel than AWD, because it does power all wheels
Omfg people, in the simplest terms AWD is affectively all wheels have some amount of torque at any given time depending on terrain and traction, 4WD is selectable and when selected has the truest form of all wheels receiving same amount of torque no matter the conditions...Take my 76' F150, it has 4spd manual gearbox, it has transfer case for 4WD also has manual lockout front hubs, if I want 4WD in that truck I have to lock front hubs, throw the manual stick for transfer case into one of 3 positions, normally it's in 2WD, there is also 4L for low and 4H for high range, I'll select 4H for normal towing or driving conditions offroad, max speed 45mph, I'll select 4L for heavyweight heavy-duty situations such as pulling stuck tractors or vehicles, either way once in 4WD all wheels spin together unless yoy have some really loose limited slip differential than it becomes more of a 3WD lol, now AWD vehicles do all these steps for you automatically but the torque distribution is somewhat unreliable for any heavy-duty anything, great for offroad normal driving or winter conditions and allows you to have great traction for almost anything, but don't expect to ever be pulling and towing heavy-duty anywhere for very long, AWD constantly distributes varying amounts of torque between all wheels and as such can actually burn up the tranny or transfer case or even the differentials very quickly under extreme loads or conditions, literally experienced this a few times especially in the domestic SUV market, hope this helps settle any more questions or arguements, final results, true 4WD=heavy-duty work horse with all wheels receiving same amount of torque all the time while in use...
AWD=light duty, varying torque distribution to all wheels at any given time depending on what the ECU is reading for terrain or traction, great all round traction no matter conditions does everything for you, somewhat finnicky as far as reliable and predictable traction control when you want the control, I've done various tests over the years with my 2015 toyota Rav4 which is AWD and comparing it to my 2006 or even my 76' F150's it has great all round traction never been stuck but I can't really do spin outs or cyclones in the snow, multiple systems working against my inputs and the traction loss, yet my trucks I can whirlwind a snowy dust storm like the Tasmanian devil from looney toons lmao, and feels very easy controlled and well within my abilities to do...I always prefer my own control over computer control, but I absolutely love the Yota for safe reliable every weather condition driving especially with my kids and others, also saves me an ass load of money on fuel expenses lmao🤗🤗🤗
Very poor explanation. I know very well how it works and I don't understand the explanation.
How does it work then?
Dude tried to use the force to stop from rolling
I love how everyone here is saying that this video is wrong and then they proceed to all disagree with everyone else in the comments as to what the difference between AWD and 4WD is. These systems have become so complex that black and white definitions have become nearly impossible at this point.
They've not become complex, there is no difference.
AWD and 4WD are just colloquialisms. Marketing terms and casual conversations.
There are thousands of different types of 4WD/AWD (name doesn't matter) systems out there, all having different characteristics.
In simpler words
You can't change if all wheels or two wheels get power in awd
You can change which wheels get power in 4wd
4wd is also another term for 4x4
Let's dumb it down. Four wheel drive is better for off road, and all wheel drive is better for snowy roads.
@@bronsmith3612 Simplicity 👍
Awd is for adverse weather conditions on pavement, 4x4 is for off-road.
AWD is an all-wheel drive system where a computer is responsible for connecting the rear-wheel drive.
4WD is an all-wheel drive system where the person himself is responsible for connecting the rear-wheel drive, for example, there is a button on the dashboard to connect the rear-wheel drive.
@@WhyAreYouMakingMeSad Not on the earlier vehicles there was nothing electrical about the systems it’s was all gears rings driveshafts and shifters
4wd is no better unless you have diff locks, open diffs on most 4wds. traction control on just about every awd. suspension geometry, ride height and wheels it what sets them apart, add diff locks and you have an off road beast.
Don't quattros have a 70/30 split but can split to 50/50 when needed
Quattro is permanent fifty fifty.
Haldex put the power where it's needed.
About Audis systems only..
@@fabricefauconnier2358Quattro is not permanent 50/50. Its front biased unless more traction is needed more power is sent to the rear. Or some models come with dynamic mode that can give it a true 50/50 spilt when in that mode.
@@strangeclouds7I owned different quattros and its always been fifty fifty.
4x4s are known for their fuel efficiency around the world 😊
😂😂did bro just try to support the car with his arm?
wrong, all = 4. this is the same. this is more complex than only using 2 terms to explain. locks and divider gearboxes cant explained just with these 2. its stupid to do that
all wheel drive when spare tire also is spinning.
Can you explain front wheel drive too
4x4 has a transfer case that can be engaged, or disengaged.
Awd cars have a viscous coupler like a diferential.
4wheel drive does not save fuel, it's 2 rear wheel drive that save fuel. It's depends on engine capacity
Awd has center diff. 4wd usually doesnt... ecm doesn't control where the power goes, the bumblebee does, but only on haldex type awd.... my torsen awd doesn't do that crap
the real difference between 4wd and awd is about three thousand dollars on the MSRP
As far as i see it due to companies wrongly naming there systems so people buy it .... The terms has been changed from its orginal functions ... Now there are (4x4)mechanically locks diffs and splits power with transfer case to 2wheels or all 4wheels, (4wd) uses transfer case to split power to 2wheels or all 4wheels but has no locking of diffs and (Awd) sends power to all 4wheels all the time with some systems using computers to vary how much power goes to either front or rear but never 100% either direction
BMW X5 65% rear 35% front. AWD No ECU Required.
Tons of free Bullshi7
Well yes! Yes I do!
If I take my heavily built four wheel drive and cut off the 4 wheel drive lever so its locked in 4hi all the, then its an all wheel drive.
4WD locks the front and rear drivelines together. AWD allows differentiation between the front and rear drivelines. That's the difference. BOTH send power/torque to the front and rear drivelines.
A vehicle can have both 4WD and AWD...and then some.
Modern vehicles often use Traction Control to make their drivetrains grab even better. Some also use traction axle-diffs, like lockers or LSDs.
What's really awesome is some crawler and sand recovery builds use diffs where you can lock in just the front shaft. Then you can lock just the rear brakes to either pivot the front or sink the tires into the sand for more traction when winching.
Lie. It's just different names for the same thing. There's some 28 different four/all wheel drive systems depending on combination of differential types used, and then more if we count systems that eliminate some differentials altogether, such as Group B rally car systems that did not have center diff at all.
@@piotrmalewski8178 they are different !
Especially if you consider earlier models
@@Michael-e1r3m Like I said, there is more than 28 versions of all/four wheel drive. To distinguish over 28 by 2 names is an absurdity.
@@piotrmalewski8178 not if you’re part of the auto industry most parts people or technicians would have an understanding of these systems when year make and model is applied it doesn’t matter what someone may get call them
HAHAHAHAHA HE DIDNT MAKE ANY SENSE 😂
What misinformation! It even went viral.
So 4 wheel drive has no draw downs 😅
Did you know that a lot of videos about AWD are wrong? 😂
Meanwhile AWD STIs abd EVO leave everything to dust in rallys😂
Because Rally races are on roads that replicate poor driving conditions. What's your point exactly?
WRONG , modern smart awd systems are far superior to 4x4 systems, the torque is applied in relation to slip detected
The bigger question is : Do you know what the difference is?
And by "You" I mean whoever made this vid.
Talk about Mitsubishi super select
Yoh,if "i got it wrong" was a video.....
Automotive engineer here… yeah… this is not accurate. Look elsewhere for better explanations of awd and 4x4 systems.
This video was full of half truths and now you’ve just confused anyone who genuinely trying to learn about this stuff.
amazing
ECU? Wheels? This video is not make sure.
So 4wd is better and has no flaws then?
the guy hu 😂😂wants to lift the car
Don't need Tom Cruise voice telln about no 4WD
AYC say hello from Mitsubishi
Ahh... someone doesn't understand torque...
I hardly know a thing about cars... But the more I heard the less I believed. Also, I thought both had drawbacks. I didn't hear drawbacks of a 4WD
4wd is for most slippery conditions not just extreme, it has something called a transfer case to distribute the power to one or more wheels front to back with a front and rear shaft driven axal, to keep some power on a wheel all the time, very poor explanation thank you
What song is playing in the background ?
Ogryzek -- Glory Ultra slowed
Is that a jeep or a spider
AWD is a FWD layout turned 90 degrees, so what were the axles are now driveshafts, sending power to the front and rear axle. Since AWD is on all the time, you need to add some "give" in the system, so the driveshafts run off a 3rd differential. If you tried to run 4WD on the highway, eventually, you'd break one of the gears in the transfer case, since the gears are manually locked to the driveshafts and one of them would eventually break due to excessive stress.
AWD for dirt roads maintained by a grader.
Nuts.
Now explain quattro and 6x6 🤓
Yes
Ok now I'm tired reading all of this AWD. 4×4 thing.
Just to be exact the fox has rabies so the guy feeding backing up since the rabid fox approaching without any control. The fox doesn't want the chicken he wants the person
Inaccurate. I can control the amount of torque to my wheels in my AWD. I cannot control anything similar in my 2 4Wheel drive vehicles.
So Confusing 😕
It's the other way around
Now I know 😂
1992 Toyota 4WD 😁
Yep, that'll do it, THE most annoying background music I've ever heard on a video 😂
Hahahahhhhhh
Someone should tell Subaru.
🤣🤣🤣🤣🤣🤣
Sounds like this entire video was made using AI
That's incorrect
AWD - could have 2wd mode
The main difference is ability to lock axels in demand and usually mechanically
Theres many AWD vehicles good for off roading. But your facts about the differences arent great.
Quattro🔛🔝
This TTS Voice.....
Zack d films from temu😂
Get your facts straight mn😅😂
This is some of the most nonsensical information I have heard
This is absolute bollocks.
You're talking about the DIFFERENT TYPES OF 4WD /AWD SYSTEMS.
There's no technical difference between the two. Also modern clutch-based all wheel drives can work very well offroad.
You're description of 4wd refers to a "central diff lock", that's a completely separate feature which may or may not be present even on traditional/none-haldex-based 4x4s.
Bruuuh. Learn your facts before poisoning young minds
Marketing, video over, next