As a 62 year old I have never done this .. FIRST!! Hahahahahaha

Cool dude, that driver. Really going the extra mile for the customer: doing the test and taking all those pics for proof. What a legend.

Do more tests with old and/or high milage EVs. I think many people would be interested longevity of the EVs. Drive the Taxis yourself or give them the tester thingy.

Just give an AVILOO degradation test device to the taxi company, let them run the test and collect the device two days later again. They will be happy because they have information about the degradation, you are happy because you have more data on your hands with not too much work, and we are happy because we can watch more degredation videos. Win-Win-Win :D

Hope this ECQ has been a good financial decision for the driver. Taxi is a great use case for ev.

I still think that the EQC is one of the best looking EVs out there!

Temperature of the battery also affects the available energy capacity of the battery, if he did the test in summer he would maybe get around 5% degradation.

Thanks Bjørn for measuring battery degradation for many different cars and making the data available to everyone. However, I don't understand the degradation/cycle. It appears to be higher for a single cycle than for the entire life of the battery over several hundred cycles.

Great content! Thank you for collecting all the data and sharing it with the community. Just a side note as an 2018Ioniq driver with 198k km behind me the degradation really shows the most in the lower % where the "guestemate" becomes more hectic. Imo the real degradation is exactly in these last 20~25% where the charge just vaporize in thin air.

That is a better result than I expected, but I am very happy about that.

Great info !

Thanks for sharing. Interesting!

Very interesting! EQC is an underappreciated car. What would also be interesting is degredation per kilometre driven. From an engineering standpoint it's cool to see it per cycle, but as a customer, all you're usually really interested in is the effect of kilometres, IMO.

Very good work with spreadsheet and factual numbers. We need more actuall statictics on EV's over all the fluff which surronds the industry.

Very useful, informative video. Towards the end I saw very high degradation per cycle for Leaf and Kia Soul models but they were very old so perhaps this suggests lost capacity due to age and not just cycles. Would like to see Renault Zoe numbers especially the re40 model that is supposed to have a 50kwh pack that is software limited to use 40kwh.

It held up well because all this mileage was done in just 2 years. Once this car turns 6-7+ years old, then i want to see how degrated the batteries are. If i were to buy an expensive EV (i'm not against them, they are just SO expensive) then i would want one for atleast 10 years (or more).

Would be interesting to see how the degradation progressed after another 50k-100k. Typically once some cells start to degrade the progression is exponential. So this 200k = 8% degradation might mean that at 250k can be 30% Otherwise thanks for the effort!

love it!

Time for a Polestar 2 degradation test video! :D

Thanks Björn, exactly these things are tested far too rarely. I'm also positively surprised by the result of the Mercedes.

Very interesting! We are looking into getting rid of our Volvo XC60 D5 and get an electric XC40 but we are worried about the longevity of electric cars so we are still holding off.

would enjoy a renew M3 Performance refresh MiC test, with the newer 82kWh battery. They lose significantly in the first 10k km.

Great info , can u add Audi Etron. Muat bbw same frame , battery as Vw

Very interesting.

Great test - #1 question owners have is Cycles vs HPC (kwh added) vs vehicle milage ... looks like the low HPC helped minimize the degradation on this car - So if you are looking for a good deal on a used premium EV get a EQ with high milage & low HPC... (or just buy a Tesla ;0)

Can someone please explain what does Byorn mean about "discharge at 5%"? Does it mean, how much was the battery discharged, before next charging started?

I love those ev tests. Get a 3sec to 100kph car and talk about range that it can get at 90kph

Nice video. What is the Degr/cycle ? How did you calculated that? also do you still have contact with the EQC taxi? did he always charge to 100% and broght it down to 20%?

What I think could be interesting to see a charging curve/speed degradation. E.g. can a Model 3 with high recharge cycle still charge at 250kw peak?

Hey Bjørn. I have an ID.3 with 55.000 km driven, you can test it if you want. I live near Copenhagen.

Love it Bjorn when you say its done over 230,000 kms and then say that's high mileage.

How the heck has someone already put that many miles on one of those. We are only just starting to get the EQS SUVs over here in America and no one has even bought one.

Can you do another eqc with higher mileage?

Coming up to 4 years with the Kia e-Niro, 73,000 km and no discernible loss of range. My MO for charging is to 80% once a week or when we get in the 25% - 30% range unless I am doing a long journey or a remember to do what the manual says and take it to 100% once a month. Have only ever had the car below 10% once. They say that an NMC pouch cell battery like mine will be done in 1,000 cycles but the data suggests that partial charging brings that up to 2,000 to 3,000 cycles before the owner will notice a drop in range. So far this year my average added % on each plugin is 32%....so about 20 kWh of the 64 KWh battery. Sorry, but I’m a bit of a stats nerd. Given my winter/summer average efficiency of 14.5 kWh/100 km that’s 138 km of range added every time I plug in. So doing that 2,500 times gives me 342,500 km...before the car gets below 80% of its original range. At my age, doing an average of 20,000 km a year I am not too worried.

I think there is an error at column J. The numbers should be divided by 100

Just for some perspective in Dubai they run Lexus hybrids with 2 drivers, 12hrs on 12 off. After 4 years they’ll accumulate over 1million kilometres, from here they will continue running for another 1-2 years before being exported to Saudi Arabia where they’ll continue running presumably since people actually buy them The mileage is unknown after this as the Speedo doesn’t go above 999999

I did a 80 - 15 % yesterday. 271 km at 17.4 kw/100 km (it was downhill). 72.5 kw battery left 😢 the car only has 30.000 kms, mostly charged at home with 11 kw to 60%. Does the idle consumption with just pre-climate count in the consumption?

so many words with no end in sight. what's the conclusion? OMG

Interesting. I wonder how age will affect that car as the miles build. The interior looks great, the battery is still very much usable and it seems like it has a lot of life left in it. I would like to see follow up reports on this car and others like it in high use scenarios. With ice cars I would always buy a higher mileage car over one which has spent time sitting around because that seems to do more harm than miles - presuming its been looked after. I wonder if ev's will see a similar trend?

Forgot about this model

Hi Bjørn it would be very interesting when you do degradation tests in various cars also have a reliability overview. Things broken How often price of repairs Service cost etc We all know that some cars and companies you pay the "real" price after you buy it So the Question should be, I can afford to buy it, but can I afford to maintain it?

Thanks again for an interesting video, but I'd like to make two comments. Less than quarter million km and "high mileage" do not rhyme on Mercedes. And did you really check the trip computer error? The speedo is of course as inaccurate as in any other car (for no valid reason), but the trip computer on an already 10 year old Merc does not read the speedo but the sensor readings on CAN-bus that are much more accurate. So the 115 km/h average probably means cruise control setting 120 on the speedometer?

Hi Bjorn, any chance of finding BMW IX3 or VW ID4, Audi e-tron SUV's to add to the list?

I have the same MG ZS you had, bought it in 2021 and it has 44000km already. First year it charged at 7kwh (32 amp single phase) charger and now (Due to moving and not having that charger) I use the granny charger that does maybe 2kwh. The car doesn't give me any information at all, but I can share with you my most recent trip to work Morning temp was ~10c I started the day with 88% reported soc drove 89.6 km to office. Afternoon was ~22c drove 88.4km back home. Total distance: 178 km end of trip soc was 27% Assuming total usable capacity of 42kwh, I used 25.62kwh which gave me an economy figure of 14.4 kwh/100km That is the best case scenario, because ~60% was in traffic moving slowly and the rest was at 90km/h (speedometer reading)

dont you have the obd tester youtoo loan out so you can let the owner test thems self ?

It aligns with the observation that European cars of last 10 years or so, no matter the powertrain, withstand driven distance much better than actual age. I mean: drive it a lot over shorter period of time, the car is fine, looks good and all. Drive it little and try to keep it over longer period of time and these modern buckets of plastic start failing and falling apart despite the low mileage

Out of interest, is a cycle both charging from say 0% to 100% and also, say, 20% to 40%? What is a cycle?

Were the tests done with passengers? Weight is a factor.

is ther any battery or motor change?

Not too shabby tho yeah cool 👍 it's good.

I don't understand Column J on your Degradation sheet of the spread sheet "degradation/cycle" what numbers do you use for that calculation? Looks like it might be degradation/1000 cycles? but I thought the degradation at the beginning 200 cycles or so is much worse than degradation following that... ie. cycle #200-400 will show less degradation than the 1st 200 cycles; so cars with low cycle counts would potentially be more penalized then cars with many cycles.....

Such a shame odometer wasn't 234567km 😪

Dude how long have u been charging it

The 230k km degradation test does not predict de behaviour of the battery in the next 5 years, as the car is fairly new. The degradation may be perfectly ok for 5 years and then plumets abrupty in several weeks since thiis is standard hehavoiur for Li ion battery

We have an old Toyota at 400000km on it over 21 years. How did they do 234000km in two years?!?!

What a surprise to read dialectal Estonian called Finnish!

Hows the tesla at this mileage

I did a strip down of a Mazda 2 litre engine after a third of a million km's; no discernible wear..

Accuracy of degradation test in cold weather? I did a similar degradationtest with my Ioniq, 28 kW, from 2019, with 32000km. The car was changed to 100% in my cold garage ( ca 1° C). The charing stoped three ours before the test started. The I drove i on highway in constant speed at 90 km/h down to 2%. Outside temperature was -3°. The consumption was 13,3 kWh/100 km and the range was 175 km. That makes a total energy consumption of 23,275 kWh (=98%). 100 % = 23,75 kWh. If I assume that the battery hold 28 kWh at the start ( when the car was new) that makes a degradation of 15%. Is the assumption correct or does the battery hold less in cold weather? PS. Your videos are great!

Are the German Cars doing exceedingly better than the rest or am I reading the data wrong?

how many winters/summers did it go through?

If I ever meet Bjorn I sure hope he won't notice the odometer on my car...

234,000 km is what an average European drives in 17-20 years (depending on the country). So if you're not a taxi/uber driver you will be fine for the entire life of this car.

How do you define a degradation cycle? is charging from 30%->80% a half degradation cycle? I don't know what data you can pull out of an EV, but would it be possible to do some calculation of "total kW charged / battery capacity" for a more uniform result?

Very good result and the overall efficiency per available kWh, hasn’t changed much from new. Ok, it’s lost some potential range but not much. ICEd vehicles are less efficient with age but no one seems bothered about that and it’s never mentioned. Seems to prove, that with the right BMS and good battery charging, there may be less worries about if the battery pack will last the rest of the vehicle’s life.

You can hire the taxi to do the test for you?

I was like I haven't seen the rest of the world adopt EVs as taxis thats odd but then I saw the UI and it was in Finnish 😂😂 no wonder. the EV adoption rate in the taxi industry here over the past 2 years has been mindbogglingly fast.

What happens when your battery degraded too much for your needs? Do you recycle the whole car so the "bad" battery can be used for stationary purposes? Or do you replace the battery for a lot of money? Given it's out of warranty. I don't understand how this is more gentle to the environment than an ICE. You don't replace the engine every 100.000 - 200.000 km and even if you would, it's not as dirty to produce than a battery. Apart from the exhaust pollution, I really can't see the disadvantage of ICE. Can someone enlighten me please?

Degradation per cycle is pretty useless, the real word useful statistics is the degradation per kilometres

This taxi was driven slowly, with gentle accelerations, in very cold climate, never charged or discharged rapidly which is, in summary, the best case scenario for battery longevity.

7:30 whoa whoa sir, you do know that the first 10% of lithium battery degrades relatively quick compared to whats going to happen afterwards, right? So looking at the model 3 with 6% degraded in 60k km, well, it's the soft "spongy" area and you will see GREATLY reduced rate if you follow up in the next 150k km on that car.

I always load to 100% at my home-device, that loads really slow (11 Kwh). Given the low loading speed, does it matter that I load to 100% in terms of degradation? Thanks, Björn, for your test-reports; they are nice and very informative…..!

I have read Mercedes have a LOT of battery issues in China, is it true ?

Björn: call for German salesmen (Vertreter) who uses mostly Ionity or other fast chargers to get more informations about that. I know there are a lot using the model S, fat etron and EQS

How on earth did a car that came out in 2021 have such high kilometers

doesn't the battery degrade at a higher rate as charge cycles increase?

why is the model 3 listed as having 73kwh new? model 3 had like 78kwh new.

234,000, that's quite high mileage for a Mercedes. No it's not. Mine had 722.000km on the clock and I still managed to sell it to Nigeria.

Heat is another big factor in battery life. Expect more degradation in hot climates.

Nerdy, but cool :)

in the climate of your country, a diesel works, an electric car is good in a country with a milder climate in winter

While owning an EV car, the owner becomes more an analysist engineer then a driver. 🤣

How did you get a random taxi driver to do a test for you :D

Why don't you use the aviloo?

234.000km high mileage for a Mercedes-Taxi? 😂😂😂

EQC can only charge at 7.4kW on AC so it must be that the taxi company has other EVs in their fleet that can take the higher AC charge rate to justify such a high power AC portable charger. Charging on 7.4kW in a car that has to earn its living is dog slow and means a lot of down time just to charge it.

Björn next time Test Model S P85 With 1.5 Million on the Clock 😆

high usage??????? wtf! there are diesel taxi benz on 400.000km 600.000km stil going strong om first engine.

234.000 km is not high mileage Mercedes, that's actually what u get from a 2 yo car in Germany.

Hi. I can't see the formula for the degradation/cycles on the Tests File, but i think the logic behind it is flawed. For that result to have meaning, degradation would have to be linear and we know it is not, most of the degradation happens in the first cycles and after those it drops in a more linear matter if nothing abnormal happens. So a car with 200 cycles and 4% degradation is not worse than a car with 600 cycles and 7% degradation, that is because both could have had those 4% drop in 200 cycles and the other 400 cycles just add 3% of degradation. And by you calculation it looks like the those two cars would have different results but you can't be sure the first car is worse because the car still didn't do those other additional 400 cycles. Hope you understand what I'm trying to say.

This video is all over the place. Very hard to follow.

I don’t get why cars that were mostly AC charged have the worse degradation values

234000 kilometres, for a Mercedes, that's still relatively new car, when run as taxi, they always run far beyond 500000 km.

Haha :)) if you think that 234000km is a high millage in a car, especially a Mercedes, than what would you say about vehicles which have over 500.000km !?

Degradation is a bad thing. And it is bad because you start with so little, that any amount is drastic. First you get like around 20% less then what is stated on the label. And to be fare this is exactly the amount (20%) with all the ICE engines and their consumption. But their fuel capacity is big and filling speed combined with filling stations availability makes those 20% more fuel consumptions just irrelevant. Also I just looked at the speed tests. The difference between 90 and 120 km/h is like mind blowing. Between 20% and 30% less efficient with 120km/h. With ICE cars most of the time this difference is between 0% - 10%. 20% is max for passenger cars, but there are some cases when cars are more fuel efficient around 120 then 90. May be pickups or Vans will reach 30%, may be. Unfortunately those 30km/h are more than 30% increase in speed and depending on how far is your destination it might mean a lot of time spend on the road. Lets say 200km, with 90km/h this will take ~135minutes. With 120km/h it will take ~ 100minutes. 35 minute difference for 200km is a lot. Here where max speed is 140km/h on the highway you can get 400km with only 3hour drive without stopping for a brake. And this is the main route for summer weekend vacations. I do not see that happening with any EV on your table. You either slow down and stop for a brake or you keep up with 140km/h and stop for a charge. Both will take the same time, one of them will be more expensive and if you find a spare or a working fast charger. And this is why I do not think that Pure EV's are the answer. An enormous vehicle with so much resources in, big battery, big everything and it gets just around 300km of range with 120km/h speed. And even that is not enough, anything less is just waste of time. I do not see the point of that. What are you saving. Make a plug-in with 1/3 of that battery, with around 80-100 city driving real world range around 120-150hp electric motor suitable for everyday driving. Then leave the rest to a small ICE engine with the same power and 35l fuel tank.

The 160 km cycle length of the 28 kWh Ioniq is too small, should be at least 200 km. The WLTP range is 280 km.

Could any1 explain like I'm 5 what is Degradation per cycle and how it is different from "normal degradation" ? I tried googling but didn't get any "good answers"

Model 3 go HOME!!

Hey Bjørn, you said you could do Taxi’s in Oslo, good idea, however maybe an idea to just message car sellers (private persons) on Finn.no? Bet they will let you do the test for them. If it’s a good result they can use that in their car ad. If bad result they stay silent 😅 anyhow, maybe an idea.

Mileage is not a good indication of degradation. Charging pattern is