| Model Year | 2015 | 2016 | |
| Model | Mercedes-Benz SLS AMG | BMW X4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Coupe | 4dr SUV | |
| Difference | |||
| Wheelbase | 105.5 in | 110.6 in | -5.1 in |
| Length | 182.6 in | 184.3 in | -1.7 in |
| Width | 76.3 in | 74.1 in | 2.2 in |
| Height | 49.3 in | 63.9 in | -14.6 in |
| Curb Weight | 3726 lb. | 4130 lb. | -404 lb. |
| Fuel Capacity | 22.5 gal. | 17.7 gal. | 4.8 gal. |
| Headroom, Row 1 | 39.0 in | 40.0 in | -1 in |
| Shoulder Room, Row 1 | 58.4 in | 57.2 in | 1.2 in |
| Hip Room, Row 1 | 63.2 in | 0.0 in | 63.2 in |
| Legroom, Row 1 | 41.7 in | 40.4 in | 1.3 in |
| Headroom, Row 2 | 0.0 in | 37.4 in | -37.4 in |
| Shoulder Room, Row 2 | 0.0 in | 56.0 in | -56 in |
| Legroom, Row 2 | 0.0 in | 34.8 in | -34.8 in |
| Total Legroom | 41.7 in (over 1 rows) | 75.2 in (over 2 rows) | -33.5 in |
| Cargo Volume, Minimum | 6.2 ft3 | 17.7 ft3 | -11.5 ft3 |
| Cargo Volume, Maximum | 6.2 ft3 | 49.4 ft3 | -43.2 ft3 |
None of our members have yet commented on the seat room and comfort of the 2015 Mercedes-Benz SLS AMG.
None of our members have yet commented on the seat room and comfort of the 2016 BMW X4.