| Model Year | 2018 | 2008 | |
| Model | Audi A6 / S6 | Mercedes-Benz M-Class | |
| Engine | turbocharged 4.0L V8 DOHC-4v 450 hp@5800 406 lb-ft@1400 |
6.2L V8 DOHC-4v 503 hp@6800 465 lb-ft@5200 |
|
| Transmission | 7-speed automated manual | 7-speed shiftable automatic | |
| Drivetrain | AWD | AWD | |
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 114.6 in | 114.7 in | -0.1 in |
| Length | 194.2 in | 188.5 in | 5.7 in |
| Width | 73.8 in | 75.2 in | -1.4 in |
| Height | 57.8 in | 71.5 in | -13.7 in |
| Curb Weight | 4398 lb. | 5093 lb. | -695 lb. |
| Fuel Capacity | 19.8 gal. | 25.1 gal. | -5.3 gal. |
| Headroom, Row 1 | 37.2 in | 39.9 in | -2.7 in |
| Shoulder Room, Row 1 | 57.5 in | 59.9 in | -2.4 in |
| Hip Room, Row 1 | 0.0 in | 55.0 in | -55 in |
| Legroom, Row 1 | 41.3 in | 42.2 in | -0.9 in |
| Headroom, Row 2 | 37.8 in | 39.8 in | -2 in |
| Shoulder Room, Row 2 | 56.3 in | 59.8 in | -3.5 in |
| Legroom, Row 2 | 37.4 in | 40.0 in | -2.6 in |
| Total Legroom | 78.7 in (over 2 rows) | 82.2 in (over 2 rows) | -3.5 in |
| Cargo Volume, Minimum | 14.1 ft3 | 29.4 ft3 | -15.3 ft3 |
| Cargo Volume, Maximum | 14.1 ft3 | 72.4 ft3 | -58.3 ft3 |
None of our members have yet commented on the seat room and comfort of the 2018 Audi A6 / S6.
| 2008 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 |
| 2007 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Can drive this vehicle all day long and not be tired. see full Mercedes-Benz M-Class review |
| 2008 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 |