| Model Year | 2010 | 2011 | |
| Model | Audi A6 / S6 | Mercedes-Benz GL | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 4dr SUV | |
| Difference | |||
| Wheelbase | 111.9 in | 121.1 in | -9.2 in |
| Length | 194.2 in | 200.6 in | -6.4 in |
| Width | 73.1 in | 76.0 in | -2.9 in |
| Height | 58.2 in | 72.4 in | -14.2 in |
| Curb Weight | 4167 lb. | 5346 lb. | -1179 lb. |
| Fuel Capacity | 21.1 gal. | 26.0 gal. | -4.9 gal. |
| Headroom, Row 1 | 37.6 in | 40.1 in | -2.5 in |
| Shoulder Room, Row 1 | 57.1 in | 58.3 in | -1.2 in |
| Legroom, Row 1 | 41.3 in | 40.3 in | 1 in |
| Headroom, Row 2 | 38.0 in | 40.6 in | -2.6 in |
| Shoulder Room, Row 2 | 55.9 in | 58.9 in | -3 in |
| Legroom, Row 2 | 36.9 in | 39.5 in | -2.6 in |
| Headroom, Row 3 | 0.0 in | 38.2 in | -38.2 in |
| Shoulder Room, Row 3 | 0.0 in | 50.5 in | -50.5 in |
| Legroom, Row 3 | 0.0 in | 34.2 in | -34.2 in |
| Total Legroom | 78.2 in (over 2 rows) | 114 in (over 3 rows) | -35.8 in |
| Cargo Volume, Minimum | 33.9 ft3 | 14.3 ft3 | 19.6 ft3 |
| Cargo Volume, Behind R2 | 33.9 | 43.8 ft3 | -9.9 |
| Cargo Volume, Maximum | 58.6 ft3 | 83.3 ft3 | -24.7 ft3 |
| 2010 Audi A6 / S6 Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2011 | 4dr Sedan supercharged 300hp 3.0L V6 6-speed shiftable automatic AWD |
Rear seat room is average, no better. see full Audi A6 / S6 review |
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz GL.