A lot of work clearly went into this video and it's appreciated. While I don't drive a prologue, unscientifically it has always felt like setting the cruise control at 70 is the best of both worlds when driving long distance.
Hey Adam, i really appreciated the time and effort put into this! It's interesting to see the range stretch out pretty significantly when the speed is reduced by even 5 mph. That chart with the 20% range is a very big deal! For most people who aren't in an absolute charging desert like WV, they'd probably be well served to go ahead and drive 75mph over 500 miles since the Prologue charges quick enough to make up the difference in inefficiency.
@@anthonyc8499 I agree with you 100%. The most valuable data from this test is likely the 20% range. A lot of Prologue Owners are on their first EV, and it’s good to know how much range can be extended by simply slowing down. Thanks a lot for watching!
Adam - this is a really nice presentation. While I've never actually calculated travel time difference, anecdotally I've noticed it's not speed that makes for a quick trip but not stopping. Of course with a wife, kid and dog not stopping isn't viable. I find that stopping to change adds no additional time to family trips as we're going to stop every 100 miles or so anyway so might as well charge while we stop.
Thanks so much for sharing your experience. We do this as well. I stop at every charger, we pack food, stretch, use the restroom, etc. it makes the trips a little longer, but they are not as hard on the body.
Great video and good math, thank you for that. I'm still waiting for my Prologue Touring, think next week should be here. So I have a couple of questions. Is this a good car for commuting? will it do Okay in Miami during summer?
I really enjoy the HVAC. It’s a GM, and they have always been solid on creature comforts. I took a road trip in mid August with 90% humidity and 90+ high temps, and the Prologue was super comfy. Range is good for regular commuting. Level 2 charging is competitive for the segment. I’m a big fan. Happy to answer any questions. And good luck with the new ride
Thanks for the video. I got a question. My prologue is only about 12 days old. Touring AWD. Why does 100% range sits at 275 miles instead of 281 like it's on the website
Other RUclipsrs call that the "GOM" - the Guess-O-Meter! It's gauging your State Of Charge (how many kilowatt-hours you have left), what your personal efficiency is (miles per kWh) and calculates how far you'd go on that charge by multiplying those two numbers.
Thanks for the great video. I just bought a prologue and get fairly close to 280 miles range per charge, at mixed city and commute traffic no faster than 65 mph. But I do have another question. Is an electric car more expensive to drive than a gas car? The video shows that a 500 mile trip costs about $100, for which you could buy even in California 25 Gallons of gas, and a gas car that gets more than 20 mpg would have a lower cost per mile. That does not seem to look to good for the EV. Am I missing something?
Yes. 90% of charging is done at level 1 or level 2, which is charged at utility rates. So, around 5-6 times less than the examples in this video. For me, $0.13 per kWh, for 90% of my driving makes an EV around 4.5 to 5 times cheaper to drive.
We have a very large mountain climb near where I live. It’s 1200 ft in about 2 miles. It does fine, just like all EVs, because of the 100% torque instantly on demand. Even low power EVs drastically outperform gas cars. On the way down a hill, an EV can recuperate mileage as long as you stay under around 70mph. The higher the speed, the harder it is to take advantage of regenerative braking.
I was trying to figure out why the data wasn't agreeing, and then I see that time to charge was added at the end of the trip in order to restore the vehicle to the the state of charge for the return trip. To me, that's overly specific and very situational, and it's going to create a false sense that traveling at 70 mph is nearly as fast as traveling at 75 mph. With this constraint, that might be true, however, at some point we would eventually make that up time, even with the constraint of charging when arriving at the destination. If we control for just the actual driving and charging times, when driving 500 miles at 75 mph, we will arrive at our destination nearly 30 minutes sooner than when driving 70 mph. Even with this scenario of charging at the destination, if this is a 1,000-mile round trip, we will return home at least 40 minutes sooner doing 75 mph (assuming that we are comfortable returning home with a nearly empty battery and can charge at home).
@Aslash304 But eventually, there will always be charging at our destination if we're planning on returning home. So we only save 10 minutes driving 75 mph on the trip out, but we save over 30 minutes driving 75 mph on the trip home. So maybe the best way to look at it is that the best driving speed is based on whether there will be charging at the destination.
@@Aslash304 Oh, I'm not concerned about myself. I have years of EV travel experience at this point, but I do want to make sure the best, most accurate EV information is available for EV folks. Over the years, there's been a lot of misleading information even within the EV community about "needing to drive slower to get to your destination faster." It's usually a tool to direct people away from EVs entirely (e.g., "buy a hybrid!") or to specific EV brands (e.g., "buy a Tesla if you want to travel!"). Ultimately, each EV is unique. For instance, the pack in your Prologue has a top buffer that makes it okay to charge to 100% from time to time, even though you wouldn't want to do that in some other EVs like Teslas that lack a top buffer. However, some principles such as driving faster to travel faster are nearly universal because a 500-mile trip requires 6 to 8 hours of driving time but rarely more than 1 to 2 hours of charging time, regardless of EV. So shaving 5% off the driving time offers much more time savings than shaving 5% off the charging time. As a result, driving faster almost always saves total trip time.
@@newscoulomb3705 maybe I should just delete the video. Also, just for clarification, I made it explicitly clear that it is faster to drive faster. There are also other conclusions to that can be drawn, like how many miles you can drive at certain speeds.
10:50 It's worth noting that if maximum travel speed is your ultimate goal, you might want to optimize your time spent charging. Based on what I've seen of the 85 kWh Ultium pack's charging profile, 20 to 25 minutes of charging time is the point of diminishing returns. For reference, while you traveled 500 miles in 9 hours here (~55 mph travel time including charging stops), I'm able to fairly consistently travel 500 miles in about 9.5 to 9.75 hours in my Chevy Bolt EV while driving 75 mph (52-53 mph travel time including charging stops). I would expect the Prologue to be able to do closer to 60 mph travel time over long distances if the charging stops were optimized.
I’m glad you’re able to get good performance from the Bolt. Help me understand what you mean by optimized. I was doing almost 80kW when I unplugged. Should I unplug 9 minutes in, when I lose 150kW? The reality is, the Bolt is MUCH more aerodynamic. That’s why you’re able to drive faster, and still make good time. This vehicle takes a bigger hit at high speeds than anything I’ve ever owned. The Prologue is a massive vehicle with poor coefficient of drag. So poor, it’s not published anywhere. It’s also why this data only works for this car.
@Aslash304 The 85 kWh Ultium pack appears to do the best with a ~20-25 minute session, where it's adding a little more than 40 kWh and 110-120 miles of range at 2.4 mi/kWh. What you want to account for is the time it takes to access the charger (I refer to it as "slop time") because that will indicate the true point of diminishing returns and when you should end the session. That's why E-GMP cars should always charge to over 80% because the time to access a charger is more than the difference in time they would save by only charging to 60% (but making more stops as a result). So for your calculations, you likely would have needed to make one additional stop (5 total counting the final charge at the destination), but the total time spent charging would be reduced. Of course, this is all theoretical because chargers in the real-world are that evenly spaced.
Hi anyone no what brake pads the fisker ocean uses given that the fisker ocean uses a brembo brake caliper I can't find any thing for it . There no way this caliper is only used on the fisker ocean so pads and discs must be available. I don't need any but i I like buying spares for that moment when you do need them
Video is not dumb. Those of us old enough to remember the energy crisis that inspired Nixon->Carter administrations to adopt a 55 mph national speed limit that we clearly should have adopted by now given that this Climate Crisis that is the principle reason that EVs exist today, should be asking the question, when will we do that. I suggest that any time people try these various speed efficiency runs, you should also run at some slower speeds, which admit it, we could and should all be willing to do, to ensure we all don't starve of drought/flood caused famines or die in heat events.
Driving under 65 is out of the question if you have anywhere to go, probably even in retirement. Switching to Bev is enough, factually. Hazardous & bad karma.
@@rp9674 and that's just bad music. Maybe that was the birth of MAGA, the first pop song that tried to make the government sound oppressive to the average guy.
Wow, that is a bit sobering. 20 cents per mile?! With gasoline at $3 a gallon that is like getting 15mpg. I get mid to high 20's on the highway with my Odyssey. So 25mpg is 12 cents per mile. That means that 500 mile trip is $60. I still want to get a BEV but I can forget about saving money on road trips! 😥
Yes, at the most expensive charger at 75mph, a BEV is the same as gas. This was an example of minimum efficiency at maximum cost. You can pay for Tesla’s Supercharger plan and bring it down to $0.15 after 2 charging sessions. Or, if you do some planning, and are willing to sacrifice a few minutes charging more slowly, you can cut it to $0.15, because there are always cheaper chargers. Stop and have lunch at a restaurant with free charging on top of it, and all of a sudden you’re at $0.10. Planning saves you money. Drive fast and max out convenience, and you’re going to pay more. Such is life.
@@Aslash304 It looks like it is much more than gasoline. At 65mph you spent $95.50 to go 498 miles. That is 19.2 cents per mile. With gasoline at $3 a gallon an ICE vehicle would only need to get 15.6mpg to match that. At 65mph my Odyssey gets nearly 30mpg which is only 10 cents per mile. Like I said, I still want a BEV but those numbers are very disappointing. I would have thought it would be around 10 cents per mile on public chargers and 5 or 6 cents per mile charging at home. When I rented a Bolt in Florida worked out the numbers and it was the same as a 33mpg car. Maybe I calculated wrong. Free level 2 chargers are great (when they work) but at 6kw they only give the Prologue about 17 miles of range per hour. Good for topping off a day of errands but not sufficient for a road trip. I can see why the free 320kw charger at the Warwick Park & Ride is always full! chargehub.com/en/full-details-page.html?locId=89067
My lifetime average after 13,000 miles on our BMW i4 eDrive40 with 18" wheels/225 tires, is 4.1 miles/kWh. And though I typically drive the speed limit, a few thousand of those miles has been on 70+ mph highways and I don't always drive more slowly than traffic. So yes we should all be driving more slowly, and no one should be daily driving SUVs, because they are a hot mess. Ditto with pickups. I'd debate you on why we shouldn't speed. When use selfish reasoning like time saved or money wasted, it really undermines why we're transitioning to EVs. We're doing it because we have to do it to survive. And the sustainability of motor vehicles is tenuous at best (even EVs) so the last thing we should be doing is building them to be inefficient (SUVs/pickups) and driving them like we don't understand that energy wasted = emissions, even when you think you're charging 100% with renewable (which almost none of us are able to do even if you have solar panels, because the grid burns fossils to provide your overnight charging even if you trade them back renewable).
Great feedback, thanks for sharing this. I am at 3.7 miles per kWh lifetime in the Prologue. I also drive slower to save wear and tear on the car. It is big. I agree that we don’t need big cars. I would love it if there were more options
Thanks for watching. “Exponentially - adv. - by means of or as expressed by a mathematical exponent.” Square is to the second power, or a mathematical exponent.
It basically works similarly to the Inverse Square Rule. Go twice the speed, you use four times the energy (two-squared) pushing the air out of the way of the front of the car so only go 25% the distance with the same amount of fuel / power. Go three times the speed, you go through fuel / power nine times quicker (three squared) so only go 11.111...% of the distance. There are other variables like Adam says (friction on the road, slight differences in efficiency of the motors at various speeds) but that Inverse Square is a great way of estimating how much range you'll get at different speeds. I left a comment on this video which did the same thing in Germany with an IONIQ 6... ruclips.net/video/SCLSLU_1qBg/видео.html ...and discovered the Inverse Square estimate was pretty accurate at guessing the real world range AND erred on the side of caution, giving you that all important buffer to make it to that next charger. My calculations for the Hyundai are in that comment to show what I mean.
Thanks! The shorthand is, yes, the faster you drive, the sooner you'll get to your destination. That rule of thumb doesn't change for EVs. Where people get confused is that they are stopping to charge more times and charging for longer when they drive faster (i.e., less efficiently), but what they aren't accounting for is that the reduced time spent driving more than offsets the additional time spent charging. So driving faster is always going to be a net gain. This is even true with slower charging EVs like the Chevy Bolt EV, and it was even true 7 to 8 years ago when the fastest public chargers were only 50 kW.
I think the Prologue charges faster than the time the lost from the extra charging due to faster driving. Even when the car tapered to 77kW, that was equivalent of 185 miles of range/hour if the efficiency is 2.4mi/kWh.
@@anthonyc8499 Yup. That's the shorthand way of calculating it. Miles-per-hour charging rate can give you an easy calculation for the point of diminishing returns. For most EVs, that point is going to be way past the posted legal speed limit.
Depends on your charging strategy. Check out the "races" they do at Out of Spec Motoring. They will charge often to only get peak charging speeds. As soon as it drops, they unplug. But they also plan their stops to get max charging speed. So they may unplug even when getting good charging speeds because they want to get to their next charging stop at 10% to get max speed there. So charging speed wins those races. Thus, charging speed is the main "con" for the Prologue on my list. But the other cars I'm considering are E-GMP which charge great (250+) on CCS but only 50kw NACS. Maybe I should just wait for Juniper.
@@woodsguykevinI averaged almost 100kW on a 400 mile road trip with 4 charging stops. The charging curve on the Prologue is pretty competitive, especially if you don’t like arriving with a low state of charge. ruclips.net/video/ReO8jM2JC_g/видео.html
I can see once per year taking a trip, if I owned a Honda Prologue, far enough to need a recharge on the road. 40 miles/day or less mostly. Number trips a year in the 150 mile round trip range visiting relatives. But slow charge at their house (not needed, but why not?) and that's easily covered. It boggles my mind how many people seem to need to travel hundreds of miles often every year.
@@Aslash304 Reason why we need to rebuild our train system. 1916 US 250,000 miles of rail. Today 93,000. To bad it was allowed to be torn up instead of nationalized like the freeways.
A lot of work clearly went into this video and it's appreciated. While I don't drive a prologue, unscientifically it has always felt like setting the cruise control at 70 is the best of both worlds when driving long distance.
It’s likely the fastest speed that makes sense if you have a vehicle with a similar charging curve.
I did the same test in a Mach E Standard range, and at 70mph I was able to get 188. At 55mph I was able to get 281 Huge difference!
Yes. It’s very big once you go under 65. But it makes the trip a lot longer. I like to drive 60, myself. Thanks for sharing your data
Agreed my Bolt EUV does best 55 to 60. 4 m/kWh or better. Best I have seen is 6 m/kWh going under 40 on back roads. At 65 and above range is zapped.
I drive 55mph, and the miles per kWh more than makes up for it with the reduced amount of charging needed.
Hey Adam, i really appreciated the time and effort put into this! It's interesting to see the range stretch out pretty significantly when the speed is reduced by even 5 mph. That chart with the 20% range is a very big deal!
For most people who aren't in an absolute charging desert like WV, they'd probably be well served to go ahead and drive 75mph over 500 miles since the Prologue charges quick enough to make up the difference in inefficiency.
@@anthonyc8499 I agree with you 100%. The most valuable data from this test is likely the 20% range. A lot of Prologue Owners are on their first EV, and it’s good to know how much range can be extended by simply slowing down. Thanks a lot for watching!
Adam - this is a really nice presentation. While I've never actually calculated travel time difference, anecdotally I've noticed it's not speed that makes for a quick trip but not stopping. Of course with a wife, kid and dog not stopping isn't viable. I find that stopping to change adds no additional time to family trips as we're going to stop every 100 miles or so anyway so might as well charge while we stop.
Thanks so much for sharing your experience. We do this as well. I stop at every charger, we pack food, stretch, use the restroom, etc. it makes the trips a little longer, but they are not as hard on the body.
I've done this same test over 100 mile rounds trip, 55 in one direction, 75+ in the other. Wind resistance kills at high speeds.
100% agree.
Great video and good math, thank you for that. I'm still waiting for my Prologue Touring, think next week should be here. So I have a couple of questions. Is this a good car for commuting? will it do Okay in Miami during summer?
I really enjoy the HVAC. It’s a GM, and they have always been solid on creature comforts. I took a road trip in mid August with 90% humidity and 90+ high temps, and the Prologue was super comfy. Range is good for regular commuting. Level 2 charging is competitive for the segment. I’m a big fan. Happy to answer any questions. And good luck with the new ride
Thanks for the video. I got a question. My prologue is only about 12 days old. Touring AWD. Why does 100% range sits at 275 miles instead of 281 like it's on the website
Because the number is an estimate based on your driving.
Other RUclipsrs call that the "GOM" - the Guess-O-Meter! It's gauging your State Of Charge (how many kilowatt-hours you have left), what your personal efficiency is (miles per kWh) and calculates how far you'd go on that charge by multiplying those two numbers.
Thanks for the great video. I just bought a prologue and get fairly close to 280 miles range per charge, at mixed city and commute traffic no faster than 65 mph.
But I do have another question. Is an electric car more expensive to drive than a gas car? The video shows that a 500 mile trip costs about $100, for which you could buy even in California 25 Gallons of gas, and a gas car that gets more than 20 mpg would have a lower cost per mile. That does not seem to look to good for the EV. Am I missing something?
Yes. 90% of charging is done at level 1 or level 2, which is charged at utility rates. So, around 5-6 times less than the examples in this video. For me, $0.13 per kWh, for 90% of my driving makes an EV around 4.5 to 5 times cheaper to drive.
How does it do going up a mountain? Does coming back down generate back a descent amount? Thanks
We have a very large mountain climb near where I live. It’s 1200 ft in about 2 miles. It does fine, just like all EVs, because of the 100% torque instantly on demand. Even low power EVs drastically outperform gas cars. On the way down a hill, an EV can recuperate mileage as long as you stay under around 70mph. The higher the speed, the harder it is to take advantage of regenerative braking.
@ thanks!
Probably going to lease one as a commuter and pretty much only charge at home overnight 👍
I was trying to figure out why the data wasn't agreeing, and then I see that time to charge was added at the end of the trip in order to restore the vehicle to the the state of charge for the return trip. To me, that's overly specific and very situational, and it's going to create a false sense that traveling at 70 mph is nearly as fast as traveling at 75 mph. With this constraint, that might be true, however, at some point we would eventually make that up time, even with the constraint of charging when arriving at the destination.
If we control for just the actual driving and charging times, when driving 500 miles at 75 mph, we will arrive at our destination nearly 30 minutes sooner than when driving 70 mph. Even with this scenario of charging at the destination, if this is a 1,000-mile round trip, we will return home at least 40 minutes sooner doing 75 mph (assuming that we are comfortable returning home with a nearly empty battery and can charge at home).
Right. You assumed there was charging at the destination. I assumed there wasn’t.
@Aslash304 But eventually, there will always be charging at our destination if we're planning on returning home. So we only save 10 minutes driving 75 mph on the trip out, but we save over 30 minutes driving 75 mph on the trip home.
So maybe the best way to look at it is that the best driving speed is based on whether there will be charging at the destination.
You should find the best action for your in your Prologue. I’m really sorry if the data was inaccurate or misleading
@@Aslash304 Oh, I'm not concerned about myself. I have years of EV travel experience at this point, but I do want to make sure the best, most accurate EV information is available for EV folks. Over the years, there's been a lot of misleading information even within the EV community about "needing to drive slower to get to your destination faster." It's usually a tool to direct people away from EVs entirely (e.g., "buy a hybrid!") or to specific EV brands (e.g., "buy a Tesla if you want to travel!").
Ultimately, each EV is unique. For instance, the pack in your Prologue has a top buffer that makes it okay to charge to 100% from time to time, even though you wouldn't want to do that in some other EVs like Teslas that lack a top buffer. However, some principles such as driving faster to travel faster are nearly universal because a 500-mile trip requires 6 to 8 hours of driving time but rarely more than 1 to 2 hours of charging time, regardless of EV. So shaving 5% off the driving time offers much more time savings than shaving 5% off the charging time. As a result, driving faster almost always saves total trip time.
@@newscoulomb3705 maybe I should just delete the video. Also, just for clarification, I made it explicitly clear that it is faster to drive faster. There are also other conclusions to that can be drawn, like how many miles you can drive at certain speeds.
I set my cruise at 80 and I only lost 4 miles from the original milage prediction, I think I'm ok with that
What was your efficiency in miles per kWh?
10:50 It's worth noting that if maximum travel speed is your ultimate goal, you might want to optimize your time spent charging. Based on what I've seen of the 85 kWh Ultium pack's charging profile, 20 to 25 minutes of charging time is the point of diminishing returns. For reference, while you traveled 500 miles in 9 hours here (~55 mph travel time including charging stops), I'm able to fairly consistently travel 500 miles in about 9.5 to 9.75 hours in my Chevy Bolt EV while driving 75 mph (52-53 mph travel time including charging stops). I would expect the Prologue to be able to do closer to 60 mph travel time over long distances if the charging stops were optimized.
I’m glad you’re able to get good performance from the Bolt. Help me understand what you mean by optimized. I was doing almost 80kW when I unplugged. Should I unplug 9 minutes in, when I lose 150kW? The reality is, the Bolt is MUCH more aerodynamic. That’s why you’re able to drive faster, and still make good time. This vehicle takes a bigger hit at high speeds than anything I’ve ever owned. The Prologue is a massive vehicle with poor coefficient of drag. So poor, it’s not published anywhere. It’s also why this data only works for this car.
@Aslash304 The 85 kWh Ultium pack appears to do the best with a ~20-25 minute session, where it's adding a little more than 40 kWh and 110-120 miles of range at 2.4 mi/kWh.
What you want to account for is the time it takes to access the charger (I refer to it as "slop time") because that will indicate the true point of diminishing returns and when you should end the session. That's why E-GMP cars should always charge to over 80% because the time to access a charger is more than the difference in time they would save by only charging to 60% (but making more stops as a result).
So for your calculations, you likely would have needed to make one additional stop (5 total counting the final charge at the destination), but the total time spent charging would be reduced. Of course, this is all theoretical because chargers in the real-world are that evenly spaced.
@@newscoulomb3705 this kind of optimization is not possible at all in my part of the country, but could be applied to specific routes.
@@Aslash304 West Virginia is playing EV on Hard Mode.
@@anthonyc8499 correct.
Great video! Thanks, Adam! I will now. Set it (at 70) and forget it!
Bingo! I appreciate the feedback very much!
Hi anyone no what brake pads the fisker ocean uses given that the fisker ocean uses a brembo brake caliper I can't find any thing for it . There no way this caliper is only used on the fisker ocean so pads and discs must be available. I don't need any but i I like buying spares for that moment when you do need them
I would look for the full technical service manual. Have you reached out to the FOA?
@Aslash304 not yet I've just signed up .
Video is not dumb. Those of us old enough to remember the energy crisis that inspired Nixon->Carter administrations to adopt a 55 mph national speed limit that we clearly should have adopted by now given that this Climate Crisis that is the principle reason that EVs exist today, should be asking the question, when will we do that. I suggest that any time people try these various speed efficiency runs, you should also run at some slower speeds, which admit it, we could and should all be willing to do, to ensure we all don't starve of drought/flood caused famines or die in heat events.
Thanks for the feedback. I always drive 60, or less when I’m not testing the car. I also think that slower driving saves tires, energy, and money.
Driving under 65 is out of the question if you have anywhere to go, probably even in retirement. Switching to Bev is enough, factually. Hazardous & bad karma.
@@rp9674 that's an opinion, not a fact.
I can't drive 55 - Sammy Hagar
@@rp9674 and that's just bad music. Maybe that was the birth of MAGA, the first pop song that tried to make the government sound oppressive to the average guy.
Here at Florida they drive from 80 to 90 miles.
Traffic flow definitely plays a key role. Thanks for your feedback
$29 for a charging session seems a bit high. Is that a supercharger thing or fast chargers a bit pricier in your area?
It’s all superchargers that are charging non-Tesla without a subscription.
Can you do a video on mapping out a trip with charging
Absolutely look for it very soon
Wow, that is a bit sobering. 20 cents per mile?! With gasoline at $3 a gallon that is like getting 15mpg. I get mid to high 20's on the highway with my Odyssey. So 25mpg is 12 cents per mile. That means that 500 mile trip is $60. I still want to get a BEV but I can forget about saving money on road trips! 😥
Yes, at the most expensive charger at 75mph, a BEV is the same as gas. This was an example of minimum efficiency at maximum cost. You can pay for Tesla’s Supercharger plan and bring it down to $0.15 after 2 charging sessions. Or, if you do some planning, and are willing to sacrifice a few minutes charging more slowly, you can cut it to $0.15, because there are always cheaper chargers. Stop and have lunch at a restaurant with free charging on top of it, and all of a sudden you’re at $0.10. Planning saves you money. Drive fast and max out convenience, and you’re going to pay more. Such is life.
@@Aslash304 It looks like it is much more than gasoline. At 65mph you spent $95.50 to go 498 miles. That is 19.2 cents per mile. With gasoline at $3 a gallon an ICE vehicle would only need to get 15.6mpg to match that. At 65mph my Odyssey gets nearly 30mpg which is only 10 cents per mile. Like I said, I still want a BEV but those numbers are very disappointing. I would have thought it would be around 10 cents per mile on public chargers and 5 or 6 cents per mile charging at home. When I rented a Bolt in Florida worked out the numbers and it was the same as a 33mpg car. Maybe I calculated wrong. Free level 2 chargers are great (when they work) but at 6kw they only give the Prologue about 17 miles of range per hour. Good for topping off a day of errands but not sufficient for a road trip. I can see why the free 320kw charger at the Warwick Park & Ride is always full! chargehub.com/en/full-details-page.html?locId=89067
My lifetime average after 13,000 miles on our BMW i4 eDrive40 with 18" wheels/225 tires, is 4.1 miles/kWh. And though I typically drive the speed limit, a few thousand of those miles has been on 70+ mph highways and I don't always drive more slowly than traffic. So yes we should all be driving more slowly, and no one should be daily driving SUVs, because they are a hot mess. Ditto with pickups. I'd debate you on why we shouldn't speed. When use selfish reasoning like time saved or money wasted, it really undermines why we're transitioning to EVs. We're doing it because we have to do it to survive. And the sustainability of motor vehicles is tenuous at best (even EVs) so the last thing we should be doing is building them to be inefficient (SUVs/pickups) and driving them like we don't understand that energy wasted = emissions, even when you think you're charging 100% with renewable (which almost none of us are able to do even if you have solar panels, because the grid burns fossils to provide your overnight charging even if you trade them back renewable).
Great feedback, thanks for sharing this. I am at 3.7 miles per kWh lifetime in the Prologue. I also drive slower to save wear and tear on the car. It is big. I agree that we don’t need big cars. I would love it if there were more options
BTW: wind resistance increases as a square of the speed, not exponentially. (Says the math guy) Otherwise your analysis is great.
Thanks for watching. “Exponentially - adv. - by means of or as expressed by a mathematical exponent.” Square is to the second power, or a mathematical exponent.
It basically works similarly to the Inverse Square Rule. Go twice the speed, you use four times the energy (two-squared) pushing the air out of the way of the front of the car so only go 25% the distance with the same amount of fuel / power. Go three times the speed, you go through fuel / power nine times quicker (three squared) so only go 11.111...% of the distance.
There are other variables like Adam says (friction on the road, slight differences in efficiency of the motors at various speeds) but that Inverse Square is a great way of estimating how much range you'll get at different speeds.
I left a comment on this video which did the same thing in Germany with an IONIQ 6...
ruclips.net/video/SCLSLU_1qBg/видео.html
...and discovered the Inverse Square estimate was pretty accurate at guessing the real world range AND erred on the side of caution, giving you that all important buffer to make it to that next charger. My calculations for the Hyundai are in that comment to show what I mean.
Thank you, Adam ! Great video.
Thanks for watching!
@@Aslash304 Adam, You're the reason I got a Prologue. I love my new EV!! Thank you once again for all the great Videos.
@@mpgolfzen Enjoy it! Let me know if you have any questions. Happy to help!
@@Aslash304 Thanks - greatly appreciate it!
Thanks! The shorthand is, yes, the faster you drive, the sooner you'll get to your destination. That rule of thumb doesn't change for EVs. Where people get confused is that they are stopping to charge more times and charging for longer when they drive faster (i.e., less efficiently), but what they aren't accounting for is that the reduced time spent driving more than offsets the additional time spent charging. So driving faster is always going to be a net gain. This is even true with slower charging EVs like the Chevy Bolt EV, and it was even true 7 to 8 years ago when the fastest public chargers were only 50 kW.
Thanks for your feedback
I think the Prologue charges faster than the time the lost from the extra charging due to faster driving. Even when the car tapered to 77kW, that was equivalent of 185 miles of range/hour if the efficiency is 2.4mi/kWh.
@@anthonyc8499 Yup. That's the shorthand way of calculating it. Miles-per-hour charging rate can give you an easy calculation for the point of diminishing returns. For most EVs, that point is going to be way past the posted legal speed limit.
Depends on your charging strategy. Check out the "races" they do at Out of Spec Motoring. They will charge often to only get peak charging speeds. As soon as it drops, they unplug. But they also plan their stops to get max charging speed. So they may unplug even when getting good charging speeds because they want to get to their next charging stop at 10% to get max speed there. So charging speed wins those races. Thus, charging speed is the main "con" for the Prologue on my list. But the other cars I'm considering are E-GMP which charge great (250+) on CCS but only 50kw NACS. Maybe I should just wait for Juniper.
@@woodsguykevinI averaged almost 100kW on a 400 mile road trip with 4 charging stops. The charging curve on the Prologue is pretty competitive, especially if you don’t like arriving with a low state of charge.
ruclips.net/video/ReO8jM2JC_g/видео.html
Charging is about as expensive as fueling up, it's a shame, as it should be cheaper than gas, but I guess greed is big here.
At the Supercharger, yes. At home, it’s 5x less. So, long distance travel has a penalty.
Great work out!
Great automobile
😮well, not enough range for a decent road trip. T.Y.V.M.
I will address this in an upcoming video
Cool
Thanks for watching!
I can see once per year taking a trip, if I owned a Honda Prologue, far enough to need a recharge on the road. 40 miles/day or less mostly. Number trips a year in the 150 mile round trip range visiting relatives. But slow charge at their house (not needed, but why not?) and that's easily covered. It boggles my mind how many people seem to need to travel hundreds of miles often every year.
Big family, relatives live far away, travel
for work. Or just day trips. We love day trips
@@Aslash304 Reason why we need to rebuild our train system. 1916 US 250,000 miles of rail. Today 93,000. To bad it was allowed to be torn up instead of nationalized like the freeways.
@@dailyrider2975 100% agree