PorscheACC

I have a 2019 Cayenne S with the LiFePO4 Lithium battery.

With what I know now, and how Porsche is behaving lately, my choice will be not to buy any Porsche with Lithium batteries, because of battery killing/damaging overcharging defects, defective/killed Lithium batteries, Lithium battery fires on certain models, etc..

ALEV8

Lithium battery replacement is vastly less scary than failed air suspension or something gigantic like that, which is $$$ mechanical issue, a la transfer cases/transmissions replaced en masse with 958.1 until they got that under control. My CPO 17 Platinum has been trouble free, kinda acts like it wants a new battery but not really. Don’t want a burned down car either so I understand. That 88k mi car is optioned as I want and S and perfect colors…..just don’t want to run into problems.

Schnave

Do not confuse the high-voltage lithium batteries on PHEV’s with the 12 volt LiFePO4 starter battery. While both are technically lithium batteries, the high-voltage battery uses different chemistry that is subject to thermal runaways. The 12 volt LiFePO4 battery is stable and will not catch fire.

https://lithiumhub.com/lifepo4-batte...heyre-the-best
https://www.iib.co.il/upload/1529315153.pdf

For what it’s worth, both my 2019 Cayenne batteries have been trouble-free.

ALEV8

Anyone with a ‘19 here up into the 75k+mi range yet, and what has failed if anything?

Ericson38

That makes sense. Antigravity LiFePO4 batteries (for my 997) are about $1K, but weight about 20 lbs (for their H8 offering) to my current 997's AGM Napa H8, at 61 lbs. But not only are we saving 40 lbs of unsprung weight, they should last 10 years, versus 4 years for the AGM. I don't understand why it didn't work out that way for many with the 9Y0 Cayennes on this board, and can't seem to find anything negative about Antigravity's offering with the 997 using the stock alternator.

ALEV8

I considered one of those batteries for my 997 C4, ended up going with the chonky AGM from Porsche IIRC. I had fun with that car, had to let it go to save my back. Too much suspension monkeying and lowering and raising and softening and stiffening, and one day could not do it anymore. Traded it on the Cayenne Platinum. Looking for a 991.1 GTS once my house goes…

PorscheACC

Too bad that the Antigravity batteries can't be fitted with the internal battery controller and sensor that the LiFePO4 Cayennes require to interface with the vehicle bus/BMS for monitoring/charging.

It should be illegal for a company like Porsche to have the monopoly for being the only provider of their batteries, even more, charging $2,200 for them and $1000+ for the easy installation/registration.

They should make the built-in battery controller/sensor a kit that could be used by vendors like Antigravity, etc..

ALEV8

Drove the S, big smile. Too many miles and cosmetic issues.
Drove the base, great mileage and price, very meh without the suspension and Sport Plus and full leather.
GTS and Turbo will be considered as well.
The hunt continues.

Silververtu

You will love GTS and Turbo over the S.

Elsa.Turbo

'19 Turbo here with 79K mi on it bought at 60K with CPO loaded: RAS, PSE, PDCC, PASM with air, Burmester, Soft close, Sport Chrono, HUD, etc (basically everything except ACC and PCCB).
So far, the following have been replaced under warranty:
-Front control arms
-Breather hose
-PSE due to crack and rattling
-full leather dash due to leather bubbling (not common but have heard of a few with same issue; likely thin adhesive)
-Oil filler tube due to cracking

Other than that, has been relatively reliable with normal maintenance. It is my favorite car to date and does everything well (came from a '19 RS5).

With that being said, I'd personally recommend waiting for one with CPO (basically negates the mileage and gives peace of mind especially if the "major" services have already been performed).

Happy hunting!

ALEV8

I need to bridge car for maybe 6 months I think and look for the GTS or Turbo but not when they are 105$k like here. That’s pushing into 991/2 territory for my dollar.

Silververtu

Mind to share where you are? At $105k, we are talking low mileage 2021 Turbo in my area. 2020 GTS' with <40k miles are asking less than $100k

icemang

FWIW my '21 S with the APR tune is a rocket. I'm no boy racer but the added torque changes the car, dramatically for the better imo. Pedal response at any speed is much improved, to me the car just drives much better.

You'll have to scroll down but the dyno tells the tale, check out the TQ curve. https://www.goapr.com/products/softw...U-29T-EA839-9Y

clubracer6

I am in a similar camp. Just sold my F80 M3 and was considering a Beaver Teef M3, but think I want to go back to a daily mixed with another 911.

Originally lookin at a 957 GTS, but then talked myself into a 958.1 GTS, but decided I want to minimize my risk and have a warranty and something newer. In the 40’s it’s a base 9Y0 or a 958.2/ S or GTS. Really love how the new one looked, but must admit all the touch screen is a bit of a turn off, plus I read you can’t adjust things if you are rolling.

I have noticed in some pictures that the seats and even wheel show some wear in the 9Y0 with miles in the 40’s. Those of you with that, what are you seeing? My last last 957 S had 150k and essentially looked new inside. Same with my 955 Turbo S.

Part of me just wants to stick with the 958.1 GTS and save the 10k for repairs.

ALEV8

Dallas. Last two 21GTS I saw are both over $105k.