| Model Year | 2008 | 2006 | |
| Model | Mercedes-Benz M-Class | Audi TT | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Hatch | |
| Difference | |||
| Wheelbase | 114.7 in | 95.4 in | 19.3 in |
| Length | 188.5 in | 159.1 in | 29.4 in |
| Width | 75.2 in | 73.1 in | 2.1 in |
| Height | 71.5 in | 53.0 in | 18.5 in |
| Curb Weight | 4705 lb. | 2957 lb. | 1748 lb. |
| Fuel Capacity | 25.1 gal. | 14.5 gal. | 10.6 gal. |
| Headroom, Row 1 | 39.9 in | 37.8 in | 2.1 in |
| Shoulder Room, Row 1 | 59.9 in | 55.6 in | 4.3 in |
| Hip Room, Row 1 | 55.0 in | 0.0 in | 55 in |
| Legroom, Row 1 | 42.2 in | 41.2 in | 1 in |
| Headroom, Row 2 | 39.8 in | 32.6 in | 7.2 in |
| Shoulder Room, Row 2 | 59.8 in | 48.1 in | 11.7 in |
| Legroom, Row 2 | 40.0 in | 20.2 in | 19.8 in |
| Total Legroom | 82.2 in (over 2 rows) | 61.4 in (over 2 rows) | 20.8 in |
| Cargo Volume, Minimum | 29.4 ft3 | 13.8 ft3 | 15.6 ft3 |
| Cargo Volume, Maximum | 72.4 ft3 | 24.2 ft3 | 48.2 ft3 |
| 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 |
| 2006 Audi TT Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2005 | 2dr Hatch turbocharged 225hp 1.8L I4 6-speed manual AWD |
The rear seat is not designed for adults over 5 feet tall. Which means unless you have kids its just more storage space. see full Audi TT review |