| Model Year | 2011 | 2020 | |
| Model | Mercedes-Benz GL | Audi A8 / S8 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr Sedan, ext. | |
| Difference | |||
| Wheelbase | 121.1 in | 123.2 in | -2.1 in |
| Length | 200.6 in | 208.7 in | -8.1 in |
| Width | 76.0 in | 76.6 in | -0.6 in |
| Height | 72.4 in | 58.6 in | 13.8 in |
| Curb Weight | 5346 lb. | 4773 lb. | 573 lb. |
| Fuel Capacity | 26.0 gal. | 21.7 gal. | 4.3 gal. |
| Headroom, Row 1 | 40.1 in | 38.3 in | 1.8 in |
| Shoulder Room, Row 1 | 58.3 in | 59.1 in | -0.8 in |
| Legroom, Row 1 | 40.3 in | 41.5 in | -1.2 in |
| Headroom, Row 2 | 40.6 in | 38.5 in | 2.1 in |
| Shoulder Room, Row 2 | 58.9 in | 57.6 in | 1.3 in |
| Legroom, Row 2 | 39.5 in | 44.3 in | -4.8 in |
| Headroom, Row 3 | 38.2 in | 0.0 in | 38.2 in |
| Shoulder Room, Row 3 | 50.5 in | 0.0 in | 50.5 in |
| Legroom, Row 3 | 34.2 in | 0.0 in | 34.2 in |
| Total Legroom | 114 in (over 3 rows) | 85.8 in (over 2 rows) | 28.2 in |
| Cargo Volume, Minimum | 14.3 ft3 | 12.5 ft3 | 1.8 ft3 |
| Cargo Volume, Behind R2 | 43.8 ft3 | 12.5 | 31.3 ft3 |
| Cargo Volume, Maximum | 83.3 ft3 | 12.5 ft3 | 70.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz GL.
None of our members have yet commented on the seat room and comfort of the 2020 Audi A8 / S8.