| Model Year | 2021 | 2020 | |
| Model | Mercedes-Benz GLS | Audi Q7 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr SUV | |
| Difference | |||
| Wheelbase | 123.4 in | 117.9 in | 5.5 in |
| Length | 205.0 in | 199.3 in | 5.7 in |
| Width | 79.9 in | 77.6 in | 2.3 in |
| Height | 71.8 in | 68.5 in | 3.3 in |
| Curb Weight | 5467 lb. | 4784 lb. | 683 lb. |
| Fuel Capacity | 23.8 gal. | 22.5 gal. | 1.3 gal. |
| Headroom, Row 1 | 39.4 in | 39.9 in | -0.5 in |
| Shoulder Room, Row 1 | 59.3 in | 59.5 in | -0.2 in |
| Legroom, Row 1 | 40.3 in | 41.7 in | -1.4 in |
| Headroom, Row 2 | 40.2 in | 38.8 in | 1.4 in |
| Shoulder Room, Row 2 | 58.5 in | 58.5 in | 0 in |
| Legroom, Row 2 | 41.9 in | 38.8 in | 3.1 in |
| Headroom, Row 3 | 0.0 in | 35.9 in | -35.9 in |
| Shoulder Room, Row 3 | 0.0 in | 49.4 in | -49.4 in |
| Legroom, Row 3 | 34.6 in | 29.2 in | 5.4 in |
| Total Legroom | 116.8 in (over 3 rows) | 109.7 in (over 3 rows) | 7.1 in |
| Cargo Volume, Minimum | 17.4 ft3 | 14.8 ft3 | 2.6 ft3 |
| Cargo Volume, Behind R2 | 42.7 ft3 | 37.5 ft3 | 5.2 ft3 |
| Cargo Volume, Maximum | 84.7 ft3 | 71.6 ft3 | 13.1 ft3 |
None of our members have yet commented on the seat room and comfort of the 2021 Mercedes-Benz GLS.
None of our members have yet commented on the seat room and comfort of the 2020 Audi Q7.