| Body | 4dr Sedan | 4dr Sedan, ext. |
| Wheelbase | 117.8 in | 122.9 in |
| Length | 202.2 in | 207.4 in |
| Width | 76.7 in | 76.7 in |
| Height | 57.5 in | 57.9 in |
| Curb Weight | 4365 lb. | 4464 lb. |
| Fuel Capacity | 21.7 gal. | 21.7 gal. |
| Headroom, Row 1 | 37.2 in | 37.2 in |
| Shoulder Room, Row 1 | 59.1 in | 59.1 in |
| Legroom, Row 1 | 41.4 in | 41.4 in |
| Headroom, Row 2 | 38.1 in | 39.1 in |
| Shoulder Room, Row 2 | 57.8 in | 57.8 in |
| Legroom, Row 2 | 38.7 in | 42.9 in |
| Total Legroom | 80.1 in (over 2 rows) | 84.3 in (over 2 rows) |
| Cargo Volume | 14.2 ft3 | 14.2 ft3 |
None of our members have yet commented on the seat room and comfort of the 2015 Audi A8 / S8.
| Trim | A8 3.0T | A8 4.0T | S8 |
| Standard Engine | supercharged 3.0L V6 DOHC-4v 333 hp@5300 325 lb-ft@2900 | turbocharged 4.0L V8 DOHC-4v 435 hp@5100 444 lb-ft@1500 | turbocharged 4.0L V8 DOHC-4v 520 hp@5800 481 lb-ft@1700 |
| Standard Transmission | 8-speed manually-shiftable automatic | 8-speed manually-shiftable automatic | 8-speed manually-shiftable automatic |
| Standard Drivetrain | AWD | AWD | AWD |
| Standard Tires | 255/45HR19 tires | 255/45HR19 tires | 265/35YR21 tires |
| Optional Tires | 265/40HR20 tires | 265/40HR20 tires |   |
|   | 265/40YR20 tires | 265/40YR20 tires |   |
| Trim | A8 L 3.0T | A8 L 3.0 TDI | A8 L 4.0T | A8 L W12 |
| Standard Engine | supercharged 3.0L V6 DOHC-4v 333 hp@5300 325 lb-ft@2900 | turbocharged 3.0L V6 Diesel DOHC-4v 240 hp@3500 428 lb-ft@1750 | turbocharged 4.0L V8 DOHC-4v 435 hp@5100 444 lb-ft@1500 | 6.3L W12 DOHC-4v 500 hp@6200 463 lb-ft@4750 |
| Standard Transmission | 8-speed manually-shiftable automatic | 8-speed manually-shiftable automatic | 8-speed manually-shiftable automatic | 8-speed manually-shiftable automatic |
| Standard Drivetrain | AWD | AWD | AWD | AWD |
| Standard Tires | 255/45HR19 tires | 255/45HR19 tires | 255/45HR19 tires | 265/40HR20 tires |
| Optional Tires | 265/40HR20 tires | 265/40HR20 tires | 265/40HR20 tires | 255/45HR19 tires |
|   | 265/40YR20 tires | 265/40YR20 tires | 265/40YR20 tires |   |
None of our members have yet commented on the powertrain of the 2015 Audi A8 / S8.
None of our members have yet commented on the tires of the 2015 Audi A8 / S8.