Cars & sedans · 1997–2010
Audi A8 battery replacement.
We bring the right battery to your A8 and swap it where it's parked — at home, at work or in a parking lot, anywhere in the OKC metro and across Oklahoma. Same-day or scheduled.
- 49 / 95Rbattery group size, newest A8s
- Regular or AGMbattery type
- 30–60 minsame-day arrival

Which battery your A8 takes
| Model years | Battery size | Cold-cranking amps | Type |
|---|---|---|---|
| 1997–2003 | Group 49 | 825–950 CCA | Regular or AGM |
| 2004–2010 | Group 49 or Group 95R | 850–950 CCA | Regular or AGM |
From O'Reilly Auto Parts' catalog — the store we buy your battery from (checked on a 2001 4.2L and a 2007 4.2L A8). Some engines and trims differ, so we confirm the exact battery for your A8 when you book and show you the price before we install it.
Where the battery is & what the swap involves
1997–2003 Audi A8
Where it is: Not under the hood — it's in the trunk, under the floor panel.
After the swap: Newer Audis and Volkswagens may need the new battery coded to the car's computer — we take care of it.
2004–2010 Audi A8
Where it is: Not under the hood — it's in the trunk, under the floor panel.
After the swap: Newer Audis and Volkswagens may need the new battery coded to the car's computer — we take care of it.
How it works
Book online and pay the service fee — your card is saved. We head to your A8, test the old battery, take it to the closest O'Reilly for the core exchange and buy the right new one at the store's walk-in price. Back at your car we charge the battery plus sales tax to your saved card, install it, test the charging system and email your receipt. Installation labor is covered for 90 days.
Audi A8
Straight answers.
By O'Reilly's catalog, the Audi A8 takes — 1997–2003: Group 49 (825–950 CCA); 2004–2010: Group 49 or Group 95R (850–950 CCA). Engines can differ, so we confirm the exact battery for your A8 when you book, and you see the price before we install it.
The catalog lists regular batteries for every Audi A8 we cover; an AGM is an upgrade some owners choose for short trips and Oklahoma heat. For 1997–2003, 2004–2010, regular and AGM both fit — we'll match what your A8 came with unless you ask for the upgrade.
Not under the hood — it's in the trunk, under the floor panel. Wherever it is, we swap it where the car is parked.
More Audi models
Other cars
Every vehicle → — don't see yours? We do almost every gas and diesel car, truck and SUV. Book it here.