Tesla Model S that clocked 430,000 miles undergoes battery inspection, reveals 28% battery degradation after 8 years of heavy use

[Redaktion]

Range degradation with age is a major concern for EV owners. However, it is far from uncommon to come accross Teslas with extremely high mileages that have suffered from tolerable range loss even after heavy use. One such vehicle, a 2016 Tesla Model S with over 430,000 miles on the clock, is being tested and experimented with by an established YouTube channel, and the results should put EV owners' worries at ease.

https://www.notebookcheck.net/Tesla-Model-S-that-clocked-430-000-miles-undergoes-battery-inspection-reveals-28-battery-degradation-after-8-years-of-heavy-use.864403.0.html

[L]

Ok, now do a test on a bigger control group from all manufacturers.

[jkhjhjbj]

So in 8 years you have to pay half of EV car price again because it lost 30%+ of range
Noice

[Anononon]

Heard of an engine replacement???

[jkhjhjbj]

Heard of an engine replacement???

Haven't heard of gas tank replacement for half car's cost. EV drives also need replacement and aren't cheaper than engine.

[Wolfy]

So does that mean Tesla should increase their warrantee to let's say 15 years 250k miles? Cause their stock price would climb cause more people wouldn't be worried about the battery. Imagine any time mentions battery breaking (ie engine failure) and you say 15 year 250k mile warranty. Don't worry about it Tesla has it covered. That would inspire confidence. Tesla needs to get their balls back this is one way to do it.

[Casey]

For the sake of easy math, let's say an EV with a 100kWh battery pack loses 25% range after X years. To charge the battery to what the car thinks is 100%, from 0%. Does it take 75kWh or 100kWh?

[Denis Y]

MY friend who got a 2014 Tesla S just have her battery replaced for $19,000 at dealership.  ONly got 68k+ miles on it.

[Mr Mello]

For the sake of easy math, let's say an EV with a 100kWh battery pack loses 25% range after X years. To charge the battery to what the car thinks is 100%, from 0%. Does it take 75kWh or 100kWh?

That's a good question.  My educated guess would be that it would take 75kWh, because the battery is storing the energy, not generating it, and any losses from the 100kWh have to go somewhere; Thermodynamics and all that.  Just like a tired power tool battery, you can tell when they have lost significant capacity because it charges too quickly.

[Romeo]

For the sake of easy math, let's say an EV with a 100kWh battery pack loses 25% range after X years. To charge the battery to what the car thinks is 100%, from 0%. Does it take 75kWh or 100kWh?

75kWh - look for YouTube representations of battery imbalance and they will explain it exactly.

[JasonB]

MY friend who got a 2014 Tesla S just have her battery replaced for $19,000 at dealership.  ONly got 68k+ miles on it.

It's a 2014 model. Battery pack quality has come a long way from those days. There are 2022 F-150 lightnings with 100k on the battery and only 3% capacity loss. The next generation of batteries will likely have virtually no measurable loss during the first 100k miles covered.

[Romeo]

Heard of an engine replacement???

Haven't heard of gas tank replacement for half car's cost. EV drives also need replacement and aren't cheaper than engine.

So many things are wrong in your perception I don't even know where to start to explain but I'll give it a try.

1. Comparing the battery with a gas tank? Really?
2. Not half the cost in the slightest. A 3rd party battery repair is £5k, a Tesla repair is £10k (4 years warranty) and a brand new replacement £15k (8 years warranty) compare that with the cost of a new model S round it to £100k for the sake of argument, that's 5%, 10% and respectively 15%.
3. Drive units are going strong at roughly 500k miles per unit. Granted the 1st iteration had a cooling system poor design, but 2015 motors and onwards had that rectified. Need I say anything about ICE engines?

For perspective I got myself a second hand Model S 85. 11% degradation after 9.3 years. So far it's done 8k miles in 3 months and calculated to average fuel prices in the UK I've saved £1.8k that otherwise I would of spent on fuel to travel the same distance. That's 12.86% of how much I paid for the car. If I would have another 15k-20k I would buy another one just because of the sheer value of it.

And another thing, when you hear someone who's got an EV banging on about EV this and EV that, we're really not trying to "brainwsh" any1. We just can't believe how good it is and want all other people around us to benefit from it. Maybe we should just say that all EVs are s***, don't buy them so that we can get a lower price on the next one. My Model S will never be up for sale again that's for sure and in the event of some1 smashing into me, I will just buy it back from the insurance company and repair it myself. That's how good of a work horse it is.

[Romeo]

MY friend who got a 2014 Tesla S just have her battery replaced for $19,000 at dealership.  ONly got 68k+ miles on it.

That just sounds like a poor understanding of how Li-Ion battery works and 0 care taken by owner. Keeping it plugged in at 100% is what would do that to the battery specially if it is rarely run.

I found that out on my first electric skateboard, always plugged unless I would take it for a ride. I could see the degradation with every ride, from 8 miles when new to about 3.5 miles after 7 months. My current skateboard has a home made battery with a range of 42 miles. Degradation over the 3 years I had it, is 3% so far.

[Romeo]

Ok, now do a test on a bigger control group from all manufacturers.

If you look out on the interwebs you'll see a running graph of all the Teslas that have been sold (as long as they have agreed to the T&C's for sharing data) and what's the degradation on them.

[Romeo]

So in 8 years you have to pay half of EV car price again because it lost 30%+ of range
Noice

Well you don't really have even if you lose 50% capacity if your comute is still 60 miles one way you can still use it as your daily. In other words if I have a model S 100. That means it has 100 kWh usable when it hits 30% degradation it has 70kWh usable. Guess what you get in a new Model S 70? Exactly, 70kWh usable battery.

Needless to say when you buy a Model S 60, not many sold but there's still some out there 🤣