| Model Year | 2016 | 2011 | |
| Model | Audi A8 / S8 | Mercedes-Benz GL | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 122.9 in | 121.1 in | 1.8 in |
| Length | 207.4 in | 200.6 in | 6.8 in |
| Width | 76.7 in | 76.0 in | 0.7 in |
| Height | 57.9 in | 72.4 in | -14.5 in |
| Curb Weight | 4464 lb. | 5346 lb. | -882 lb. |
| Fuel Capacity | 21.7 gal. | 26.0 gal. | -4.3 gal. |
| Headroom, Row 1 | 37.2 in | 40.1 in | -2.9 in |
| Shoulder Room, Row 1 | 59.1 in | 58.3 in | 0.8 in |
| Legroom, Row 1 | 41.4 in | 40.3 in | 1.1 in |
| Headroom, Row 2 | 39.1 in | 40.6 in | -1.5 in |
| Shoulder Room, Row 2 | 57.8 in | 58.9 in | -1.1 in |
| Legroom, Row 2 | 42.9 in | 39.5 in | 3.4 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 | 84.3 in (over 2 rows) | 114 in (over 3 rows) | -29.7 in |
| Cargo Volume, Minimum | 14.2 ft3 | 14.3 ft3 | -0.1 ft3 |
| Cargo Volume, Behind R2 | 14.2 | 43.8 ft3 | -29.6 |
| Cargo Volume, Maximum | 14.2 ft3 | 83.3 ft3 | -69.1 ft3 |
None of our members have yet commented on the seat room and comfort of the 2016 Audi A8 / S8.
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz GL.