| Model Year | 2016 | 2021 | |
| Model | Audi A8 / S8 | Mercedes-Benz GLB | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 122.9 in | 111.4 in | 11.5 in |
| Length | 207.4 in | 182.4 in | 25 in |
| Width | 76.7 in | 72.2 in | 4.5 in |
| Height | 57.9 in | 65.3 in | -7.4 in |
| Curb Weight | 4464 lb. | 3638 lb. | 826 lb. |
| Fuel Capacity | 21.7 gal. | 15.9 gal. | 5.8 gal. |
| Headroom, Row 1 | 37.2 in | 40.7 in | -3.5 in |
| Shoulder Room, Row 1 | 59.1 in | 55.9 in | 3.2 in |
| Legroom, Row 1 | 41.4 in | 41.1 in | 0.3 in |
| Headroom, Row 2 | 39.1 in | 39.3 in | -0.2 in |
| Shoulder Room, Row 2 | 57.8 in | 54.9 in | 2.9 in |
| Legroom, Row 2 | 42.9 in | 38.1 in | 4.8 in |
| Headroom, Row 3 | 0.0 in | 34.8 in | -34.8 in |
| Shoulder Room, Row 3 | 0.0 in | 43.8 in | -43.8 in |
| Legroom, Row 3 | 0.0 in | 29.1 in | -29.1 in |
| Total Legroom | 84.3 in (over 2 rows) | 108.3 in (over 3 rows) | -24 in |
| Cargo Volume, Minimum | 14.2 ft3 | 22.0 ft3 | -7.8 ft3 |
| Cargo Volume, Maximum | 14.2 ft3 | 62.0 ft3 | -47.8 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 2021 Mercedes-Benz GLB.