2008 BMW M3 Battery Size
Battery size varies by engine. Values below are catalog-confirmed — engines are not merged.
S65B40
- Group 91-1615 CCA
- Group 94RH7800 CCA
- Group H8-AGM900 CCA
| Group | CCA | L × W × H |
|---|---|---|
| 91-1 | 615 | 11 × 6.90 × 6.90" |
| 94RH7 | 800 | 12.40 × 6.90 × 7.50" |
| H8-AGM | 900 | 13.9 × 6.8 × 7.5" |