| Model Year | 2011 | 2021 | |
| Model | Mercedes-Benz R-Class | Audi TT | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Hatch | |
| Difference | |||
| Wheelbase | 126.6 in | 98.6 in | 28 in |
| Length | 203.0 in | 165.0 in | 38 in |
| Width | 77.1 in | 72.1 in | 5 in |
| Height | 65.4 in | 53.3 in | 12.1 in |
| Curb Weight | 4949 lb. | 3208 lb. | 1741 lb. |
| Fuel Capacity | 21.1 gal. | 14.5 gal. | 6.6 gal. |
| Headroom, Row 1 | 39.8 in | 37.1 in | 2.7 in |
| Shoulder Room, Row 1 | 60.3 in | 53.6 in | 6.7 in |
| Legroom, Row 1 | 39.8 in | 41.1 in | -1.3 in |
| Headroom, Row 2 | 40.4 in | 33.8 in | 6.6 in |
| Shoulder Room, Row 2 | 59.6 in | 47.9 in | 11.7 in |
| Legroom, Row 2 | 36.2 in | 28.9 in | 7.3 in |
| Headroom, Row 3 | 37.2 in | 0.0 in | 37.2 in |
| Shoulder Room, Row 3 | 52.8 in | 0.0 in | 52.8 in |
| Legroom, Row 3 | 32.4 in | 0.0 in | 32.4 in |
| Total Legroom | 108.4 in (over 3 rows) | 70 in (over 2 rows) | 38.4 in |
| Cargo Volume, Minimum | 15.2 ft3 | 12.0 ft3 | 3.2 ft3 |
| Cargo Volume, Behind R2 | 42.2 ft3 | 12.0 | 30.2 ft3 |
| Cargo Volume, Maximum | 85.0 ft3 | 25.1 ft3 | 59.9 ft3 |
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz R-Class.
None of our members have yet commented on the seat room and comfort of the 2021 Audi TT.