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by 01100011 882 days ago
Were those Teslas used as rental cars? Were they charged/discharged aggressively by users unconcerned with longevity?

I rented a Model Y from Hertz. The battery life was suspiciously poor during the 3 or so days I drove it, necessitating multiple trips to a supercharger.

Don't underestimate the abuse from rental customers.
3 comments
toomuchtodo 882 days ago
It's a battery and electric motor(s), it doesn't matter if they were primarily fast DC charged and the users beat them up. I have beat the shit out of a 2018 Model S for 110k miles and I've only had to put tires and wiper fluid into it. I have primarily Supercharged it back and forth across the US more times than I can count, and I've only lost ~7% of the 100kw pack range.

https://electrek.co/2023/08/29/tesla-battery-longevity-not-a... ("Tesla battery longevity not affected by frequent Supercharging, study says")

> We compared cars that fast charge at least 90% of the time to cars that fast charge less than 10% of the time. In other words, people who almost exclusively fast charge their car and people who very rarely fast charge. The results show no statistically significant difference in range degradation between Teslas that fast charge more than 90% of the time and those that fast charge less than 10% of the time.

https://www.recurrentauto.com/research/impacts-of-fast-charg...

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bluGill 882 days ago
The suspention system is the same wear. Where I live salt is what gets cars not miles.
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toomuchtodo 882 days ago
Not an EV specific problem. Have a mechanic inspect the vehicle’s mechanicals prior to purchase if you’re risk adverse.
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bluGill 882 days ago
that is the point. the significant wear on a modern car is things that are common. ICEs last a lot longer than the rest of the car these days.
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tashoecraft 882 days ago
I bought a gas car from the last hertz liquidation sale and it’s been great.

I don’t think people abuse rentals as badly as you may think. Even the aggressive charging has only been happening for what, a year? It’s not going to cut the life all that much imo.

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cptskippy 882 days ago
I thought they determined supercharging doesn't cause appreciable degradation.

https://www.batterytechonline.com/charging/report-supercharg...

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