What's Efficient For An Electric Car? (m/kWh & Wh) - MPG Equivalent-ish
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- Опубликовано: 27 сен 2024
- We all know that something that does 20mpg isn't efficient, but what's the equivalent in Electric Car terms? Is 300Wh good or bad? Is 5mpkWh efficient?
Link to the tool: www.smarthomec...
Merch: www.lovelymerc...
Tesla Referral: ts.la/andrew31112
Link for the comparison tool: www.smarthomecharge.co.uk/guides/energy-tariffs-how-to-keep-ev-charging-costs-low
Thanks, that's a genuinely useful site. I've been on EDF GoElectric since Jan. It's not the cheapest, but works well for my charging needs - IPace, regular long weekend trips, useless scheduled charge setup in app or car.
@@PaulSouthport thanks Paul, glad it is useful. Hopefully it gives people a rough idea anyway :)
- Editor at Smart Home Charge
Thanks Andy. That's an excellent resource.
The fuel consumption figures were nicely explained by you for non-technical people. Kilowatt-hours per kilometre are the way to go, as in 25kWh/100 km. We've been using SI for over 50 years; longer than most people here have lived.
Hi EVM, this must be one of the most useful EV-related videos on RUclips - VERY WELL DONE !!!!!!!
Thanks for an interesting video.
My BMW i3 has averaged 4.3mi/kWh over the 13,427 miles since we bought it. That's a total of 3,123 kWh used. As we only ever charge it overnight at the off peak rate of 2.6p per unit, that means our total 'fuel' cost has totalled £81.19. I therefore estimate, in fuel, we've saved around £2,012 when compared against our previous diesel car.
I'm thinking of getting one of these. They seem like a perfect solution with the Rex I feel comfortable knowing someone can fetch a can of gas for me if I ever get stranded.
Good video, thanks. When asked by a non-ev owner about what is an effecient EV I just tell them to look up the miles/kWh and multiply by 10 for an mpg equivalent. I know this is scientifically rubbish but people can relate to an E-Tron doing a measly 28 mpg (2.8 m/kWh) and my Ioniq doing a respectable 58 mpg (5.8 m/kWh).
X20 would probably be more accurate but yes that's a good idea
Great video very well explained for anyone trying to understand. I prefer miles/kWh.
Feel bad for km driving countries, it's either Wh/km or kWh/100km (which is the same thing just scaled up by 100) there's no company that does km/kWh
I must admit I found the 3.4, miles per kWh reading that I get on the eNV200 easy to understand and most like the old mpg. What I do find harder to work out in my head is the time I need to charge to a given range. The charge current is usually known, I get 6.5 kW through the cable I have plugged into the house, that gets me about 22 miles per hour. However, I don't do much mileage generally so I usually charge to 60%. The tricky bit, when it is dark and wet, is calculating how long I need to go from, say, 30% to 60% without going back to see what the timer says. The best ball park figure I've got is 10% every 2 hours, but it would probably be better to find out how to set the thing to turn off at 60%. I'll just have to go and read the manual again.
I use Wh/km as having watched Bjorn for so long prefer that plus luckily my Ioniq I can show that, well technically kWh/100km but simple to convert with a single decimal point.
I changed my Corsa-e from miles/kWh to kWh/100km which worked on the nice graph... until I noticed the speedometer has also changed to kph 🤣 not so useful in the uk
@@mattc7014 isn't it about time you considered driving on the correct side of the road as the rest of us too
@@williamgoode9114 I happily drive on either side. Also the kilometer is far superior 1 mile = 5280 feet... ridiculous! 😁 I might have trouble persuading a lot of the rest of my country though! 🙄
@@mattc7014 in some countries with a united government system basically of retired engineers and a progressive trade policy, and educated people with a work ethic instead of recreational drugs and guns its easier to explain commonsense, but if they divide north and south, bark back to the second world war and further, worship a queen and have no industry or modern curriculum its harder, ironic when modern science based France with high speed trains, nuclear energy, driving on the right side, car industry, even electric car industry to some extent ! Is only 22 miles away its dissapointing guy Fawkes didn't succeed, because your sense if humour and inventiveness is great its just an inability to change or learn that's holding you back from modernising your units, England just can't Change, because you Romantise the Tudors, Victorians,Edwardians and still use slide rules.
@@mattc7014 Where outside of shipping is gallons per feet relevant? You might as well use Grandpa Simpson units.
One UK gallon of petrol releases 40.47kWh of energy when burned, but engines are so inefficient they can't use it all, that's why cars reject so much heat out the tailpipe and radiator.
So your "standard" petrol car that gets 50mpg is really getting 50/40.47 = 1.235 miles/kWh, or 809Wh/mile.
Fully Charged did a good visual example video about this while back. They had an electric lawn mover with batteries the size of a big soda bottle that would run for few hours and they actually needed a bigger lawn to really test how much work you can do on one charge. And then there was the gasoline powered mover, with equal amount of energy in the tank as was contained in the battery, meaning it had about a teacup of gasoline. The ICE mover managed just a few trips across the lawn before it ran dry.
Figures for volumetric KWh for petrol and diesel do seem to vary a bit, and your figures are actually the most generous I have seen. According to DEFRA / DECC Digest of Energy Statistics 2011 (Fuel Conversion Factors - Gov.ukwww.gov.uk › 7309-cca-draft-technical-guidance-app-b) the figures are 9.6KWh/l or 43.64KWh/gal for petrol and 10.9KWh/l or 49.6KWh/gal for diesel. That's imperial gallons of corse. To contrast the difference, a Tesla M3P rated at 309miles range on its 75KWh battery would travel 204 miles on the energy from 1 gal of diesel.
And yes, that's 204mpg based on energy.
And things can look even better in terms of cost as that gallon of diesel would cost £5.33 (uk average) compared to £2.48 (Octopus GO). Average diesel cost comes from www.confused.com/on-the-road/petrol-prices, Octopus GO EV rate is 5p/KWh - NOT the cheapest domestic tariff in the UK. Street chargers are typically more expensive although there are many AC level 2 chargers that are free.
@@malccartledge9771 I went off the EPA conversion and swapped the gallons. I may have made an error.
@@MrGonzonator I hadn't assumed and didn't mean to imply you had made any error, the available figures do vary, as most likely does the fuel itself depending on where in the world you buy it.
@@malccartledge9771 also, in terms of pure well to wheel efficiency, the EPA's 33.7kWh / US Gallon is the pure calorific content of the fuel only, they have to add in correction factors to account for the losses in extraction, refining and transportation. However, this is similar to the electric generation, transmission, conversion losses, which will also vary.
Thank you most interesting , the comparison site is very useful. Nice to know I'm driving economically and I'm on a suitable tariff
Thanks Andy. You must do this for a living, if not you should do. Excellent.
Yay, someone talking about efficiency and not just range, awesome!!
Range might be interesting when you know little about EV's and you are about to buy your first one but efficiency is so much more important becaus it decides what uit actually cost you to drive your EV to work! Changing from a gasoline car to an EV has reduced my daily driving cost to about 25%, which is possible when you have your own charger at home.
BTW my Hyundai Ioniq 28 kWh did easily 9+ km/kWh in the summer, I don't think any EV has bettered that 8 year old car yet. When they get the Aptera done I will buy one, it does 16 km/kWh 😲
My LEAF had averaged 4.2 m/Kwh over 30K miles. Since a service in April it has upped to 4.4m/Kwh. The Nissan EV website also provides the Watts/Mile figure. All of course dependent on the right foot .
I am never in a hurry, and use adaptive cruise control much of the time.
Perhaps you should have pointed out why 1000 ? It’s because there’s 1000 watts in 1 kWh.
Or rather 1000W=1kW
Or 1000Wh in 1kWh
Kinell
Although (kWh)and (watts/kilowatts) are 2 different units. kWh is an actual amount of electricity.
A kw is the rate of electricity.
So 10kWh used over 15mins
Would mean a rate of 40kw has been used.
I liked how you tried to hide your figures on the left of the board but kept looking at them. Joking apart, another interesting video that explained something new to me
I had a guess what numbers you'd pick for miles/kWh - turns out I picked the exact same numbers you did - so for what it's worth there's a data point in support of your assessment :)
On Wh/mile - I noticed a lot of Europeans talk about litres per 100km. Not quite as simple to convert that into miles/gallon :)
For me, I consider 4 miles per kWh a standard. I won't look at anything that can't achieve that. Amazingly enough, some of the most expensive EV's seem to be way below that, and cheap commuter cars, like Chevy Volt, and Nissan Leaf seem to be among the most efficient, rivaled only by Tesla. BMW I 3 and other expensive cars seem to be in the ~2.5-2.8 MPkWh. range.
I agree, I'm used to buying fuel based on distance per quantity, so I think EV manufacturers should use the same metric.
Honestly, your videos have been so helpful, so much so that I have ordered my EV and the dealer was impressed about how much research I actually did
Hi, I’m an x mechanic with ms, I got a Tesla mod 3 and it was the best thing I’ve ever bought, driving at 80 mph again after doing 50 mph for years 😮😊
4mi/kWh is the standard for long term efficiency, set by the Chevy Bolt. My Bolt is at 4.2mi/kWh over 22,000 miles.
Yup teslas have been in the 250wattmile range for a while now, so maybe 250wm or 200wkm to be totally metric and a pain in the arse to the yanks
@@williamgoode9114 wattmile is multiplication. The “per” is important.
That's is amazing. You getting better efficiency in city driving or freeway? I got 4.3 mi / 1 KW today on my model 3 long range. 61 miles of total driving 32 miles on free way and rest on city.
EVM - I've had a detailed look at the Smart Home Charge website, which was interesting, and let them know of an omission on their site - they don't really feature the Ohme intelligent cable, mainly mentioning the wall box. For those EV owners who already own a wall charger, this cable is a way to get the benefit of Ohme setting up charging at the cheapest time (on Octopus Agile) without having to get the Ohme wall box - and there is a 50% discount on the cable for Octopus customers at the moment.
If you have been socialised in l/100km , miles or km/kWh sounds quite strange.
In my case, if I want to know how much dos it cost me to make a 500km stretch, I have simply to multiply the kWh/100km value times 5 times the price of a kWh.
In the case of m/kWh you have to divide the length of you journey by the mpkWh value, which more people have problems with and then multiply by the kWh price.
But as I’ve said it depends on which value you are familiar with.
Most people will relate to miles per gallon in the uk so miles per kwh is best, making it relatable to mpg is the trick and will depend on the cost of electricity plus cars efficiency and cost of a gallon of fuel, not straight forward lol.
But all we need to know is which cars are efficient and whether or not we are driving them efficiently.
Driving behind a truck makes a massive difference but not very relaxing lol.
great content, it would be nice to display also a short information on what's that in metric, for your broader audience :-D. But i know this would take more time and math ;-)
It would not take that much math really, nor much time. :).
They're basically the same measurement (the one is the inverse of the other, while shifting the decimal point around a bit)
[by the way, it has nothing to do with mathematics, it's (very) simple arithmetic]
Another very informative and useful video. My wife and I have decided our next car will be an EV and your videos are really big help. Great work 👍🏾
I suppose everyone with solar panels will know their drawdown from the grid, in my case it’s about 10% of total. I’m new to ev’s and I was really pleased to find a 12.5p/ unit supplier with a hefty 30p daily charge based on false assumptions. Thanks for pointing out this comparison tool, I’ll certainly use it when I come up for renewal.
You laugh at these types of videos. But actually this one taught me something this time. I’ve always wondered what the difference between the to figures.. And as you say. Now I know. Have you got anymore gems like that.
All uchoob needn't be enthralling. Explanation video I was looking for. Now know what the figures mean on my Tesla.
I've been driving myself nuts trying to figure out what the Energy Consumption on the UVO app meant. THANK YOU!
I own a PHEV Toyota Prius Prime. I like that it has an average of my mpg. I have been in some other cars recently for work and the average mpg seems to be calculated in real time. So, each time you push the peddle it updates rather than giving you an average overall. Plus the Toyota "trains" you to drive better with % scores to help you use less gas and learn to use the Regen breaking better.
Well, I think what's happening is that electricity is measuring the energy using the SI Units (kW / W) and the countries that use that to calculate economy for fossil cars (liters and kms) typically use energy per amount of distance (l / 100 km). So that's why. I think most of the World use energy per distance...
Exactly. Most of the world uses the metric system and measures consumption. UK and US aren't as far along on Metrication, and measure efficiency.
Consumption is a better thing to measure. Efficiency can be misleading: Going from 20 to 40 MPG will save you more money than going from 40 to 60 MPH.
Many EVs seem to conform to this convention, but Tesla does not, choosing consumption regardless of the units selected.
Love the videos. My worry with EVs is that range and kWh per mile are too variable dependent on the weather and what type of journey you are doing. Skoda's website itself shows that their EV has a range of 338 miles under perfect conditions but in winter, with a car full and driving on the motorway that comes down to 170 miles. That's a miles / kWh of 4.1 or 2.1. It seems to me that for short around town driving EV makes so much sense (on an EV tariff) but for anyone who regularly travels around 200 miles in a trip it makes no sense at all. Given the cost of public charging, it struggles to make financial sense from a fuel perspective too if you need to charge whilst out.
3.75 miles/KWh is WAY TOO HIGH for EVs in the US. The Kia and Hyundai vehicles get about 3.0-3.1. Some of the EV trucks would be lucky to get half that. Honestly, 5.00 mi/KWh seems impossible with almost all of the EV vehicles in the US.
Thanks EVM for another informative video. However, some viewers may be tempted estimate the range of an EV by multiplying the "efficiency" in mile/kWh by the quoted battery capacity of an EV in kWh. Manufacturers quote miles/kWh figures measured over the WLTP (Worldwide harmonised Light vehicle Test Procedure) lab test, which has an average speed of 29mph. EV drivers are going to be mostly interested in range, when driving long distances. Such journeys are likely to be undertaken on motorways / dual carraigeways, where cruising speeds of 70mph are possible. The energy consumption per mile of a vehicle increases with the vehicle speed (basic laws of physics). The "efficiency" quoted a over WLTP, is not a good guide to "efficiency" at 70mph. Those people interested in EVs, of which I am one, should concentrate on real world tests as the best indicator of range, rather than inferring it from these "efficiency" figures. These values are best reserved for calculating overall energy usage and cost, over long periods of time . Real world range of EVs at 70mph would be an interesting subjects for a future video.
Thanks for the info. Greetings from the Netherlands.
I heard one EV enthusiast compares different EVs by how much it costs him to drive 1 mile. In this case Wh/miles style is favoured. He used fancy numbers such as "oh it's just 10p for me, but if I mix with sustainable energy sourced, it can be as low as 1p per mile of my journey" :)
That's why I prefer wh/mile too. MPG isn't particularly useful and I believe European countries use L/100KM which seems much more sensible
Think I was parked next to you at the OXFORD E V motor show in 2018. We had a good chat. Remember the rolls Royce converted to electric.
Never been to a motor show in Oxford.
Many thanks buddy.
No problem 👍
Great video. Would be interested to find out the energy of a gallon of diesel expressed in kWh. That’s my evening of googling sorted out. Also going to compare electric trains for work
What was it, asking for a friend ?
That makes it quite a bit more complicated because EVs are approximately 90% efficient in using the energy from the plug to rolling the wheels, whereas ICE vehicles are damn lucky to approach 30% over all driving conditions. Idling and part-“throttle” driving at city speed is particularly inefficient, and stop-and-go never puts “fuel” back in the tank like regenerative braking. The US EPA does have gallon equivalents on the website for you, nevertheless.
I recall it's about 48 kWh/gallon (UK that is) for diesel and about 44 for petrol. So looked at in very basic terms an ICE car gets about 1 mile/kWh.
@@pdken3081 and an electric after the very refining process to electrons gets about three, which makes sense as two thirds goes as heat either up cooling towers or through radiators, ah but I hear you scream electricity is made from panels which emit no heat or hydro which has no devastating effect on the eco system; coal and oil is fast being phased out, gas is only a peaker transition, EV's are three times more efficient with absolutely no tail pipe emissions and we'll all ride around on unicorns
@@pdken3081 so instead of 44 you could just say 10,kW/litre
The energy compare tool is good, but what it is missing is that some of those tariffs need you to have a 2nd Generation Smart Meter. If you don't then when you go to get a proper quote then the results will be different. I did this with EDF and now get 12p all the time, better but not great. One day all Smart Meters will be equal...
Great information as ever thank you.
Thanks, yes a bit like the litres per 100Km for ICE vehicles. Like many I prefer the MPG ,or in EV speak Miles per KWh.
Great video thanks keep up the great work.
Is there anything online where I can see how far EVs go with a heavy load? I’m looking at a Polestar 2 and wondered what range I can expect with 4 people in the car
Thanks
That’s very informative ,I need to know that
Thank you - that was helpful.
Another challenge is how to resolve the 2 different measures involved when you're driving a PHEV. You can figure mpg when it's running pure petrol, but you have to figure watts/mile. What's the way to get an aggregate figure for running both petrol and electric?
Realy nice video for the UK. Can you do one in Lts per Km for the other 750 million European viewers?
I’m sure they’re capable of making the conversions themselves. Literally all that’s left to do.
@@ElectricVehicleMan 1Km = 1000 meters. 1Mile = 5,280 feet. I love your UK measurements. Will you ever switch to metric?
Great video again
Could you or one of your subs answer the following
In a Tesla model s the battery is 100 kwh , what size would the petrol tank be in order for it to be equal in energy density .
A UK gallon of gasoline contains 43.955 kWh of energy. So a battery pack with 100 kWh of available energy would be equivalent to 2.275 UK gallons. I don't think Model S lets you use 100 kWh, so it's actually a bit less than that.
In US gallons it is 33.7 kWh. It is also not advisable to "use" your full gas tank unless you want to get stranded. It is also generally bad for an ICE vehicle to drive around with an almost empty gas tank. And many cars that Ive owned have a larger tank capacity than advertised. The advertised 12 gallon tank on my current vehicle is actually 14g. And the warning chime comes on with around 4g left... (2g of advertised volume) Which is about 16%. So really EVs and ICE vehicles are the same in those regards to having buffers... The only difference really is that EVs tend to have less usable capacity than advertised and ICE vehicles tend to have more.
A Model S with 100kWh pack is equivalent in pure energy to about 3 US gallons. But ICE vehicles are very inefficient at converting energy into miles while BEVs are very efficient. So the 100kWh pack gets you about 400 miles of range or 4 miles per kWh. But 3 gallons only gets you 90 miles in a US average 30mpg vehicle. As a US gallons contains about 33.7 kWh of energy that comes out to 0.88 miles per kWh. So the real question isn't how many gallons it takes to equal 100kWh, but how many gallons it takes to go 400 miles... Which is 13 gallons for a 30mpg vehicle... Which happens to be about the average size tank for a smaller US vehicle. So the Model S Long Range is basically at parity with the average US vehicle in terms of miles per "fillup".
I like kWh/100km to compare the efficiency and km/Wh is nice if I want to know how many kWh I need to recharge to do some distance.
For me, 13kWh/100km on national roads and 15kWh/100km on highway is the value I am using to compare if another car is efficient or not. I am driving a Ioniq 1st generation.
The numbers you are using show your Ioniq is pretty efficient - the board converted to kWh/100km -
25.0 kWh/100km
16.7 kWh/100km
12.5 kWh/100km
I must inquire about an average of 50mpg for gas cars. I looked up all the car MPGs on Google, and any car over your median value of 30mpg, on the whole, was a hybrid. Of gasoline-only vehicles, the average, at least in the USA, is closer to 25mpg.
As I said in the video, this is UK gallons, not US.
Also based on an RAC study.
I'm pleased you did this video, but I am a little concerned that your table implies that, for example, 70mpg is equivalent to 5.00 miles/KWh in any real way.
Petrol yields 9.6KWh/l or 43.6KWh/gal according to DEFRA (search for 7309-cca-draft-technical-guidance-app-b.xls)
So 1 UK gallon would give you 218 miles at 5.0 miles/KWh - VERY different from 70.
Yes, I know you didn't actually claim otherwise, but tables are, well, tables and will be read as such!
Can’t do anything more than explain it as I did. If someone doesn’t watch it properly then there’s nothing I can do with that.
It’s accurate in its purpose.
@@ElectricVehicleMan Yup, I didn't complain and I acknowledged that you didn't claim the table was to be read as such, but I wanted to emphasise just how efficient BEVs are in their energy use compared to what we think of as a norm with ICE cars.
Keep up the good work
What I'd really like to see is a comparison between ICE and electric but starting with the average totals for extraction, refining, transport, transmission, losses, etc. I frequently see the claim that ICE engines are 18% efficient but I believe that's based on running it on a bench at optimal RPM, but doesn't take the other factors into account.
Check out a good video with a simple and easy to understand ICE vs electric visual: ruclips.net/video/AFPRvfNW-Qs/видео.html
I thought ICE might come up to 30% efficiency, but that is definitely driving on a track at standard speed. One thing a lot of people seem to forget is that stopped in traffic ICE has to turn off the engine or it will keep wasting fuel while a BEV is not going to lose notable amount of range just because you keep the AC on.
Probably for the British consumer it’s best to use 4 x kWh , soooooo Tesla mod 3 , 4 x 86kwh = 344 miles 😊
Could you add info for the US. Seems a lot of other countries have all these great tools for EVs. Another great video added to the vault
30 UK mpg - 25.0 US mpg
50 UK mpg - 41.7 US mpg
70 UK mpg - 58.3 US mpg
(roughly)
@CED99 and because of the preponderance of trucks and SUVs, the US average is quite alot lower than the UK average.
When are you going to cover EVs-electric motorbikes?
There already are several RUclips videos of electric motorcycle road tests. Those I've seen are of Zero motorcycles.....
Maybe it would be clearer if we stopped using archaic measurements like miles to begin with ;)
If I ever move to a country that uses that, I will.
I use about 0.25 kWh per km. Have you seen the paper on RG re home EV charging? Google 1.3.3 Electric Vehicle and LCT Loads on Constrained Distribution Networks Researchgate. Looks like problems ahead...
Very interesting!
In petrol cars you get liters per 100 km over here on some displays and who ever invented that also just needs to float face down in a river. Right next to the person that didn't add a feature to have the age old read out of km per liter.
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This is surely economy, not efficiency - efficiency could be expressed as Wh/Km/Kg - ie, a heavy car that consumes the same amount of energy as a smaller car is more efficient. They are equally economical on consumption.
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Oh my goodness you don't think per kilometre might be slightly more modern !
Not in the UK no.
@@ElectricVehicleMan the reason for metric, the whole System International (S.I.units), is that across the spectrum of measurements there are no conversions its just decimal points, same when you used to trade with Europe, vehicle could one day drive more safely on both sides of the rail tunnel with consensus on which side to put the steering wheel, do you really think giga Berlin is going to bother with an English variant, now with your perpetual lockdown is a great time, with the roads quiet to change the signs on the roundabouts etc, replace gallons with litres pounds with kilogrammes, miles for kilometres, feet for metres, inches for millimetres, you get the drift, that in turn would put the pressure on America, as the last outlier
@@williamgoode9114 UK started Metrication long ago, but some things continue to be measured in the old units. E.g. beer still comes in pints.
wikipedia.org/wiki/Metrication_in_the_United_Kingdom
@@pepstein where as cans are 330ml, milk is litres petrol is litres water meters are in litres, so you could say you started and failed, failed to complete, as their are metric units for everything, temp pressure density length velocity mass acceleration etc, even the second world war you would have failed without america, who by the way also failed the metrication completion, its interesting that time is not metric and that still works, so technically everything should be in multiples of the second unit.
Temperature in a hundredth between water states, works yet 37°C plus or minus two as core temperature is such a narrow band yet Global Warming doesn't sufficiently concern, same humidity, fresh water availability, very blasé, I wonder if humans realised the temperature range of minus 273 to positive millions shows just how precarious our comfort is, how poorly our brains function at a mere forty degrees.
@@williamgoode9114 I'm actually American, but I've visited UK and seen first hand how they mix the two systems.
I don't think any Metrication laws were passed in the US, although I'm sure it was considered. Manufacturing, engineering, and science have largely gone metric, but the average layperson doesn't know many metric units. Speed limits are still in miles, fuel economy is still in MPG, etc.
From watching a 100 or so videos from different vehicles, I would have said Low
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At least we don't have to convert between MPG and l/100km anymore 😄
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That didn't tell how it compared against a petrol car in terms of cost. In an average electric car is it cheaper to drive a mile?
Video for that is in the channel.
@@ElectricVehicleMan thank you ill check it out
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Miles per kw is my preferred measure, however I can fully understand our European friend preferring kW per 100 km. it’s whatever rocks your boat.
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My Subaru gets 35mpg.. a leaf gets 3.3 miles per kWh. At 0.16 kWh cost in NJ it’s not much cheaper than gas’s at 2.85 a gallon… just not worth it!
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whats a "mile" ?.. some ancient measurement of distance similar to "feet" that the brits and the yanks still use I think!
Officially the UK uses miles on the road, pints of beer and everything else metric. Many people use only metric in everyday life, but it's hard not to use miles when the governments put them on all the road signs. Many of us use km for walking distances but miles for roads.
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If you want to know the equivalent. You times your miles per kilowatt hour by 40..
2.5 miles per kilowatt hour is equivalent to 100 mpg.
4.5 miles per kilowatt hours is 180 mpg.
EVs are just more efficient full stop..
ICE is 40% efficient
EV is 90% efferent.
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Why miles per gallon when we've filled up by the litre for 20+ years in the Uk?
Because the verb is milage and there is no metric equivalent word in the Oxford English Dictiknary
UK has not fully adopted the metric system. wikipedia.org/wiki/Metrication_in_the_United_Kingdom
The alexa joke made me smile.
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I rather do Liters / 10km or Liters / 100km. It seems to be the new stantard.
Well, in EV terms that would be kWh per 100km.
@@CaroAbebe no carrots per 100km
Thanks EVM for going into such detail and explaining this sort of thing so well. If you want a *_quick and rough guide_* on how much it could cost to charge your EV and which energy tariff might suit you, then check out our comparison tool right here: www.smarthomecharge.co.uk/guides/energy-tariffs-how-to-keep-ev-charging-costs-low
Does either rearly matter at this moment in time , can't drive anywhere
Let’s delete the video then until we can! 🤔
Old leafs use Miles per Wh - as these are now getting cheap and more first EV owners will buy these - you should have included the conversion too.
Leafs use miles per kWh. Exactly what this video uses. I owned two of them.
@@ElectricVehicleMan 2011-2012 don't
Very rare example and to be fair if someone needs help converting watts to kW then there’s not much hope.
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I’m on 3.2 MPKWH
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Same with petrol cars, miles per gallon and litres per 100 km
It should all be in litres and kilometres... (kWh per 100km) If only you were in Europe.
In that case it should be in [km/kWh]
@@TestTest-eb8jr nah it should be , cm/J
@@TestTest-eb8jr But that's not the way it's done in Europe or the rest of the non-Imperial world, for that matter. We do litres/100km and kWh/100km www.kia.ch/fr/notre-gamme/e-niro/
@@martinswitzer6534 good for you 👍
@@nerox3fy 😁
Similar to the difference between mpg and l/100km in cars. Mpg or mi/kWh is more intuitive as a bigger number is better
What about where people talk about a mpg equivalent for an EV?
But miles per kWh actually results smalelr numbers than wh per mile :). And what does big or small numbers have to do with being intuitive anyway?
@@yourcrazybear if you're improving the efficiency of the motor by increasing the value being measured (for mi/kWh) it makes more sense in my head. Obviously for others that won't be the case
@Yourcrazybear the point is that with mpkWh a smaller number is bad while a larger number is good, just like in mpg. But with kWhpm a smaller number is good while a larger number is bad. Which is counter intuitive to the way we are used to thinking about vehicle efficiency. The larger number of kWhpm is also highly misleading as it implies an accuracy out to three decimal places that is simply not possible as efficency is highly variable based on driving style, driving conditions, tire style etc etc.
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The Wh/m is probably due to most countries giving ICE efficiency details as L/100km
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EVM, what would be the real mpg in an electric car compared to an ICE car?
There is no such thing as a "real" mpg equivalent. All of the "mpg" numbers you see for EVs are approximations based on differebt factors. For instance if you want to know about tailpipe emmissions, there are some comparisons that show mpg equivalents based on the "dirtiness" of the grid that supplies the power. Some systems compare the amount of potentional energy in a gallon of gasoline to the kWh in the battery packs. But gallons is not a measure of energy, but s measure of fuel volume,
so you could also compare the volume of the battery pack to the volume of a full gas tank. In that case you would be taking the energy density of the battery pack into account as part of the measure of efficiency. And that is important because the more energy dense batteries become, the less they will weigh and there will be a feedback loop in the weight of the pack and the overall vehicle efficiency.
@@patreekotime4578 With reference to a gallon as a volume ,we do know a gallon of petrol contains 33 KWh of energy (approx) So now I can answer my own question, taking into account the relative efficiency electric verses ICE cars.
@@tuc-dh4df check my post earlier in the thread where I've converted mpg to m/kWh
@Kevin Tucker it only answers that question in one metric though. Which may not be the same metric everyone is looking at when thinking about mpg. Range being one of the metrics people think about.
Wh/m consumption would approach 0 the better you drive (or start to regen), whereas m/kWh would jump to infinity and scare the living daylights out of someone reading the dials as to why you have such big numbers growing (or just show an infinity symbol if SW is clever enough).
Considering that a really good EV only gets about 6 m/kWh it'll be an infinity number of years before vehicles reach infinity m/kWh.
@@patreekotime4578 I was talking about a real-time display of consumption. Some ICE cars show it real-time (like Jaguar), and as soon as you lift off when going down hill, fuel supply is cut off, and the gauge shows infinity (shortly before that it displays a very large number like 50000 or 99999:)
Cost to own a electric car the money you go to save on gas you go spent on tire and parts go broke down
Can you say that again but with words?
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Yikes my efficiency must be horrible, I'm almost always between 300 and 400 your average example at 267 I don't think I've ever seen that 😂
Ouch. Poor tires 😂
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Typical automotive industry not using just one standard so it is easy for everyone to understand
That would mean that certain countries need to do their part and convert to the metric system :).
That's never going to happen then 🤔
@@garethedwards2883 Probably not.
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Don't forget that the efficiency of an electric car starts at the power station, Electricity is merely a transporter of energy.
The same is true for ICE cars, there isn't any fossil fuels laying around any more, it needs extracted, transported, refined, transported (again) and then the car can do its thing.
@@CED99
exactly as the power station fuel has to be
No it doesn't. That's just silly. The effiency of electric cars has nothing to do with the power station.
That doesnt have anything to do with vehicle efficiency. Even if you want to make that old dumb argument, in most places the grid is moving away from coal at a breakneck pace. Meanwhile ships that transport petroleum from offshore wells still burn toxic bunker fuel. And nobody includes the transport and refining of those fuels in ICE vehicle "efficiency".
Patreeko,
while I made no mention of coal, it si still the only way to calculate overall efficiency.
Yes it starts at the well or mine and the comparison between ice or electric uses the same source of energy.
The difference is that between direct consumption of fuel and indirect as with electricity.
Miller Ruth Thomas Maria Young Matthew
My physics education is asking for efficiency in metres per Joules.
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If people can not paid 60,000 dollars for a gas truck who go to paid 150,000 dollars for electric trucks
What ‘truck’ costs 150k?
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if you need this level of help to work out simple maths then please stay in bed for the sake of all mankind
What about MPG E 🤦🏻♂️
What about it?
@@ElectricVehicleMan it’s another way of measuring efficiency. Miles Per Gallon Equivalent. I don’t understand that metric!
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OMG! Get to the point! 🤣
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Great video, thanks!
I’m not an EV owner (yet), but I’m more familiar with kWh/100km. Seems to help me understand better just how (in)efficient an EV is.
I was surprised he didn't mention this, as the associated ICE equivalent (liters per 100km) is commonly used in Europe, Canada, and many other countries. Many EVs sold in Europe display their efficiency in kWh/100km.
You can convert Wh/km to kWh/100km by dividing by 10. For example, these are the same:
185 Wh/km
18.5 kWh/100km
I'm personally not a fan of units like kWh/100km that have numbers in them. But I completely understand why they're more intuitive, as electricity is sold in kWh.
@@pepstein I can't understand why they show the consumption per 100 km rather than the more simpler 1 km. 100 km just seems like an arbitrary number without any particular meaning.
As for showing the consumption, kWh/100 km is way more logical than the other way around.
@@yourcrazybear because you get nice, easy to handle numbers this way, that are actually useful. Most people in Europe think of distances (worth driving) in tens or hundreds of kilometers and buy the petrol in liters. My ICE needs 5 liters of Diesel/100km, 0.05 liters or 5 cl per km just does not have the same ring to it. Same rationale holds true for my EV and kWh. And the numeric value in kWh is just a factor of three away from the old way of thinking (some 15kWh/100km)
And: there is the benefit that a relation to 100 km distance does intrinsically imply an appropriate average value.
@@pepstein In the United States, they use this crazy thing called "MPGe", (Miles Per Gallon equivalent) and to me, it's nonsense. That figure came along with cars like the Chevy Volt, which are "plug in hybrid". I prefer miles per kWh, just so you can use the same arithmetic as miles per gallon, or kilometers per liter. It's just what I'm used to, so it seems more intuitive to me. When I go through car shows, I have to keep the calculator app in my phone open, to convert watts per 100 miles (or watts per 100 kilometers) into something that makes sense to me.
@@pepstein It's obviously easier for those used to litres/100km to switch to kWh/100km, but it's a slightly weird unit - it has the k prefix in both the numerator and denominator - so it should immediately cancel down to Wh / 100m.
Think it's the equivalent of the European litres per 100 km... means very little to those of us who drive in the UK 🤷♂️
My i3 gives kwh/100km. Also shows instantaneous kwh/100km which is a stupid reading. Surely the instantaneous reading should be simply kw.
@@allanmitchell2410 kW is a measure of power so doesn't apply to work done unless a distance is specified.
I always get lost with Electric figures, vaguely understand why there has to be Watts, Hz, Amps, Volts.... I think 🤔 everything else just has litres or Kg or one measure reading. But I know my journey to work and back was 1 gallon each day in my Petrol car, 1/2 gallon each day in my Diesel car now I have my EV using lights and heater I use 80p of electric from my Home Charger at EV overnight Tariff rates.... Stunning stuff....also the car is warm and defrosted already 😊
Hi can you do a vid on the best way to set up your Ohme charger I know it should be easy but it’s not when your nearly 80 years old ,any help would be appreciated
What the hell’s a mile? You forgot about most of the rest of the world... and you mixed metric and imperial in the process.
Well then you’ve learned something new.
Also, this is a UK channel.
@@ElectricVehicleMan That is very short sighted as I'm sure you have a lot of viewers that are not from UK :).
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Just so you know, you can switch units between mi/kWh & Wh/mi on the VW ID.3
Kona does this as well.
Progress! Well ICE cars often let you have mpg or l/100km so why not EVs?
I find miles/kWh easier for me. Great to see the star of the show back again - the whiteboard!
I never ever think or worry about i.
Why if I may ask? Is it because you are used to it?