| Model Year | 2021 | 2023 | |
| Model | Mercedes-Benz C-Class | BMW XM | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 111.8 in | 122.2 in | -10.4 in |
| Length | 184.5 in | 201.2 in | -16.7 in |
| Width | 71.3 in | 78.9 in | -7.6 in |
| Height | 56.8 in | 69.1 in | -12.3 in |
| Curb Weight | 3472 lb. | 6094 lb. | -2622 lb. |
| Fuel Capacity | 17.4 gal. | 18.2 gal. | -0.8 gal. |
| Headroom, Row 1 | 37.1 in | 40.4 in | -3.3 in |
| Shoulder Room, Row 1 | 55.3 in | 60.3 in | -5 in |
| Legroom, Row 1 | 41.7 in | 40.4 in | 1.3 in |
| Headroom, Row 2 | 37.1 in | 38.8 in | -1.7 in |
| Shoulder Room, Row 2 | 55.0 in | 57.5 in | -2.5 in |
| Legroom, Row 2 | 35.2 in | 40.3 in | -5.1 in |
| Total Legroom | 76.9 in (over 2 rows) | 80.7 in (over 2 rows) | -3.8 in |
| Cargo Volume, Minimum | 12.6 ft3 | 18.6 ft3 | -6 ft3 |
| Cargo Volume, Behind R2 | 12.6 | 64.3 ft3 | -51.7 |
| Cargo Volume, Maximum | 12.6 ft3 | 64.3 ft3 | -51.7 ft3 |
None of our members have yet commented on the seat room and comfort of the 2021 Mercedes-Benz C-Class.
None of our members have yet commented on the seat room and comfort of the 2023 BMW XM.