Considering buying that 2021 Taycan CT 4S but ...

[Swissdude]

Hi guys,
I’m considering buying this 2021 Taycan Cross Turismo 4S from a Porsche dealer in Switzerland:
https://finder.porsche.com/ch/fr-CH/details/Z5G5X4
It has a perfect configuration: incredible Neptune Blue, Off-Road Design package, 21’’ wheels… I absolutely love it.
My only concern is the battery State of Health (SoH) at 84%. The dealer told me that, as far as he knows, no battery cells have been replaced.
Since the battery warranty will expire in about 3 years (8 years after first registration), I’m wondering if this might be a risky purchase. I’m planning to keep the car long-term. I usually keep my cars around 10 years and drive about 10,000 km per year.
Does anyone have experience with used Taycans from 2020–2021, or thoughts on whether 84% SoH is acceptable at this stage?
Thank you!
Thierry

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[Leccy61]

Lovely looking car and great spec, looks expensive from a UK perspective, but I can’t comment on your market.

Whilst nobody expects these HV batteries to fail as soon as the 8yr battery warranty expires, we’ll be carrying more risk as the battery ages and there’s no certainty on what level of warranty coverage would be available to purchase or what support for affordable replacement/repairs will be available.

Take a look at look in the Charging / Batteries forum e.g. the one mentioned by @Tooney for owner SoH data and this one that discusses failures for example, there are many others!

https://www.taycanforum.com/forum/f...CAN-PRO | Battery-,Statistics,-& Fleet Health

 

[Swissdude]

Thanks for your feedback, guys. I’ve been digging through the forum and reading many posts recently, and I’ve noticed that the 84% SoH value seems quite low for this car. Switzerland falls within the cool climate zone. I’ve placed a red dot on the graph below and… well, it doesn’t look like the best spot at all (84% SoH – 32,900 km – 20,500 miles). Do I miss something ?

 

[SergeyIndy]

That is considered a very good SoH. Any way you can post a window sticker. The website does not have it and listing of all options is not helpful to really see the full build.

 

[SoccerMan94043]

If it's giving you pause, maybe pass on it. There are lots of used Taycans out there.

On the plus side, based on long term battery studies, it's not likely to lose too much more until it fails very quickly (and there isn't enough data to know when that is yet).

 

[prj]

That is considered a very good SoH.

Not at all!

Here is 2020 Taycan 4S with 337 000 km and 88% SOH:


84% is bad. Most likely some of the cells are on the way out and very close to getting the battery error.
The bad cells are dragging down the whole pack overall.

 

[SergeyIndy]

@prj, respectfully disagree. I am at 86% and yes on the low side, as you noted, but all my cells look good and I am monitoring them and this SoH has been steady for the last 5k miles. The warranty threshold is below 80% at 37.5k miles or 3 years. Therefore, to me anything 80% or above is healthy before this mileage and years. Then the warranty threshold goes to 70%, 100k miles, or 8 years. Rebalance may bump this SoH by as much as 3%.

 

[prj]

@prj, respectfully disagree. I am at 86% and yes on the low side, as you noted, but all my cells look good and I am monitoring them. The warranty threshold is below 80% at 37.5k miles or 3 years. Therefore, to me anything 80% or above is healthy. Rebalance may bump this SoH by as much as 3%.

Your SoH is not good, it's bad and way below average. Almost all the cars sold in Germany with battery certificate on mobile.de have 90%+.

I would not recommend anyone to buy a car under 90% SoH unless it has very high mileage and is very cheap. Plenty of fish in the sea.

Especially at 30 000km a SoH of below 90% is an immediate hard pass.

 

[SergeyIndy]

Your SoH is not good, it's bad and way below average. Almost all the cars sold in Germany with battery certificate on mobile.de have 90%+.

I do not disagree, but I do not consider it bad to not recommend the car to the OP. I will certainly be the first one to let you know if I have a bad cell and have to go for cell replacement.

 

[Swissdude]

That is considered a very good SoH. Any way you can post a window sticker. The website does not have it and listing of all options is not helpful to really see the full build.

Don't have a window sticker but the full config is here : https://finder.porsche.com/ch/fr-CH/details/Z5G5X4 swiss website, available in french, german and italian only

 

[prj]

I do not disagree, but I do not consider it bad to not recommend the car to the OP. I will certainly be the first one to let you know if I have a bad cell and have to go for cell replacement.

Significantly below average is not bad? It's 84% when the Taycan tested with 10x the mileage had 88%.
Just because your car didn't do well in the battery lottery, you should not go around and tell people that below 90% SoH is "good" or "very good" for a car that's only done 30 000km.

88% is good/very good for the 4S with 337 000 km. But 84% at 1/10th of the mileage is terrible. Hard pass.

 

[Swissdude]

If it's giving you pause, maybe pass on it. There are lots of used Taycans out there.

On the plus side, based on long term battery studies, it's not likely to lose too much more until it fails very quickly (and there isn't enough data to know when that is yet).

Good point, but it's quite difficult to find such a a config in Neptune blue

 

[prj]

Don't have a window sticker but the full config is here : https://finder.porsche.com/ch/fr-CH/details/Z5G5X4 swiss website, available in french, german and italian only

You could ask the dealer to do the long SoH test where they charge it to full then discharge it, so that it does a rebalance. But I doubt it goes from 84% to 90%+ with that test.

Keeping that in mind, forget that car. The single most expensive part of the car is in really bad condition.
The car will be impossible to sell with that SoH later.

 

[Swissdude]

Your SoH is not good, it's bad and way below average. Almost all the cars sold in Germany with battery certificate on mobile.de have 90%+.

I would not recommend anyone to buy a car under 90% SoH unless it has very high mileage and is very cheap. Plenty of fish in the sea.

Especially at 30 000km a SoH of below 90% is an immediate hard pass.

Good to know, and notice that the SoH provided by the dealer mention +/-5% Between 79 to 89%...

 

[Swissdude]

You could ask the dealer to do the long SoH test where they charge it to full then discharge it, so that it does a rebalance. But I doubt it goes from 84% to 90%+ with that test.

Keeping that in mind, forget that car. The single most expensive part of the car is in really bad condition.
The car will be impossible to sell with that SoH later.

Good to know thank you !

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