| Model Year | 2009 | 2007 | |
| Model | Mercedes-Benz M-Class | Audi A8 / S8 | |
| Engine | 6.2L V8 DOHC-4v 503 hp@6800 465 lb-ft@5200 |
5.2L V10 DOHC-4v 450 hp@7000 398 lb-ft@3500 |
|
| Transmission | 7-speed shiftable automatic | 6-speed shiftable automatic | |
| Drivetrain | AWD | AWD | |
| Body | 4dr SUV | 4dr Sedan, ext. | |
| Difference | |||
| Wheelbase | 114.7 in | 121.0 in | -6.3 in |
| Length | 188.5 in | 204.4 in | -15.9 in |
| Width | 75.2 in | 74.6 in | 0.6 in |
| Height | 70.1 in | 57.3 in | 12.8 in |
| Curb Weight | 5093 lb. | 4697 lb. | 396 lb. |
| Fuel Capacity | 25.1 gal. | 23.8 gal. | 1.3 gal. |
| Headroom, Row 1 | 39.9 in | 37.4 in | 2.5 in |
| Shoulder Room, Row 1 | 59.9 in | 59.1 in | 0.8 in |
| Hip Room, Row 1 | 55.9 in | 0.0 in | 55.9 in |
| Legroom, Row 1 | 42.2 in | 41.3 in | 0.9 in |
| Headroom, Row 2 | 39.8 in | 38.3 in | 1.5 in |
| Shoulder Room, Row 2 | 59.8 in | 57.5 in | 2.3 in |
| Hip Room, Row 2 | 56.2 in | 0.0 in | 56.2 in |
| Legroom, Row 2 | 40.0 in | 42.3 in | -2.3 in |
| Total Legroom | 82.2 in (over 2 rows) | 83.6 in (over 2 rows) | -1.4 in |
| Cargo Volume, Minimum | 29.4 ft3 | 14.6 ft3 | 14.8 ft3 |
| Cargo Volume, Maximum | 72.4 ft3 | 14.6 ft3 | 57.8 ft3 |
| 2009 Mercedes-Benz M-Class Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Bottom seat cushions are long enough for taller drivers. Padding is not too firm or too soft. Excellent support and an upright, easy-chair seating position, instead of having to extend your legs horizontally to get legroom. Results in no low back pain. see full Mercedes-Benz M-Class review |
| 2009 Mercedes-Benz M-Class Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr SUV 382-horsepower 5.5L V8 7-speed shiftable automatic AWD |
very still and uncomfortable for long drives see full Mercedes-Benz M-Class review |
None of our members have yet commented on the seat room and comfort of the 2007 Audi A8 / S8.