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

[prj]

Good to know, and notice that the SoH provided by the dealer mention +/-5% Between 79 to 89%... is there a way to have a better diagnostic from a dealer without having to go there with a plug and a computer myself

They would have to do the long SoH test, Porsche provides a facility to do that. This will give a much more accurate number.
But it depends how motivated the dealer is to sell the car. If they don't care then they will not do it for you.

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[Gra13]

One thing to remember, if you buy the extended warranty for the car and continue to renew after the 8 year period, the warranty will still cover you for a complete battery failure, it just doesn’t cover a guarantee for the SOH level.

 

[Swissdude]

One thing to remember, if you buy the extended warranty for the car and continue to renew after the 8 year period, the warranty will still cover you for a complete battery failure, it just doesn’t cover a guarantee for the SOH level.

Oh, good to know, I know from the dealer that you can extend the Porsched approved warranty up to 15 years / 200 000 km. Cost CHF 1 840 CHF/year. Will check if its cover the complete battery failure.

 

[SergeyIndy]

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.

Your views are appreciated for others to consider.

I feel like lately you are making my car to be a total disaster with this level of the SoH and then my PSCBs will be cracking and disintegrating. I will be sure to keep the forum posted how I am progressing.

 

[Leccy61]

One thing to remember, if you buy the extended warranty for the car and continue to renew after the 8 year period, the warranty will still cover you for a complete battery failure, it just doesn’t cover a guarantee for the SOH level.

I would be careful with this. The wording of the warranty excludes HV battery wear and tear and Porsche have worded battery cell failures as cell ageing, not defect, hence my comment earlier about the uncertainty of the situation after 8 years.

 

[prj]

Your views are appreciated for others to consider.

I feel like lately you are making my car to be a total disaster with this level of the SoH and then my PSCBs will be cracking and disintegrating. I will be sure to keep the forum posted how I am progressing.

Your SoH is bad, telling other people that below 90% is "very good" on a car that has barely done any mileage is just factually incorrect, and OP also corraborated that based on the SoH report diagram. Your argument is that because it's above the warranty level it's good - that's not right. Good would be above average for the climate type, which this clearly is way, way below average at the very bottom end.

PSCB also isn't a good choice on these cars. They are not needed, and then posting a photo of brakes rusted on a car that's been left outside for ages as "proof" of course you instantly got proof of the contrary.
There are LOTS of people with rotors chipping/delaminating on PSCB stuck with expensive bills, there's exactly zero such issues with the steel brakes.
The "brake dust" argument is also a myth, since the brakes almost never get used, hence there is no dust in the first place.
On top of that, I can confirm the bad wet performance on PSCB and PCCB from personal experience. The steel brakes are perfectly progressive no matter the weather.
Both types are much better on ICE cars where they see use and don't experience these issues.

I am just looking at it objectively without rose tinted glasses on, I have nothing against you. But it helps to accept when your car missed the battery lottery or that there are issues with certain parts that can be avoided by not speccing these parts (that have basically no effect on the car's performance).

 

[SergeyIndy]

Your SoH is bad, telling other people that below 90% is "very good" on a car that has barely done any mileage is just factually incorrect, and OP also corraborated that based on the SoH report diagram. Your argument is that because it's above the warranty level it's good - that's not right. Good would be above average for the climate type, which this clearly is way, way below average at the very bottom end.

PSCB also isn't a good choice on these cars. They are not needed, and then posting a photo of brakes rusted on a car that's been left outside for ages as "proof" of course you instantly got proof of the contrary.
There are LOTS of people with rotors chipping/delaminating on PSCB stuck with expensive bills, there's exactly zero such issues with the steel brakes.
The "brake dust" argument is also a myth, since the brakes almost never get used, hence there is no dust in the first place.
On top of that, I can confirm the bad wet performance on PSCB and PCCB from personal experience. The steel brakes are perfectly progressive no matter the weather.
Both types are much better on ICE cars where they see use and don't experience these issues.

I am just looking at it objectively without rose tinted glasses on, I have nothing against you. But it helps to accept when your car missed the battery lottery or that there are issues with certain parts that can be avoided by not speccing these parts (that have basically no effect on the car's performance).

Great perspective and helpful to all for making these decisions.

 

[Swissdude]

Hi guys,

I'm reactivating this thread because I just received the AVILOO Flash Test report (attached below) for the Neptune Blue Cross Turismo I’ve been eyeing. I need your collective wisdom to interpret these contradictory signals.

The Context

• Model: Taycan 4S / Performance Battery Plus (83.7 kWh net)
• Mileage: 32,843 km
• Porsche Dealer SoH: 84% (BMS readout)
• AVILOO Flash Test SoH: 91% (81 kWh usable vs 89 kWh when new)

The Confusion

1. Which SoH is the "truth"? How can there be a 7% gap? Is the Porsche BMS being overly conservative, or is AVILOO being too optimistic?
2. The Benchmark: Even at 91%, the report puts the car in the "Below Average" category compared to other Taycans of similar age/mileage. Does this suggest the previous owner abused DC fast charging or kept it at 100% SoC too often?
3. Cell Health: On the bright side, the cell voltage delta is only 11mV (3.790V to 3.801V), which seems very healthy/balanced.

The Dilemma

I absolutely love the spec (Neptune Blue 4S offroad pack with the CT 21 black wheels is my dream combo - hard to find here). Given that the car is Porsche Approved, would you consider 91% (or 84% depending on who you believe) a deal-breaker for a car with only 32k km?

Is it a "good deal" or a "battery headache" in the making?

Thanks for your help!

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