| Model Year | 2021 | 2023 | |
| Model | Mercedes-Benz C-Class | BMW XM | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 2,840 mm | 3,104 mm | -1 mm |
| Length | 4,686 mm | 5,110 mm | -1 mm |
| Width | 1,811 mm | 2,004 mm | -1 mm |
| Height | 1,443 mm | 1,755 mm | 0 mm |
| Curb Weight | 1,575 kg | 2,764 kg | -1 kg |
| Fuel Capacity | 66 L | 69 L | -3 L |
| Headroom, Row 1 | 942 mm | 1,026 mm | 941 mm |
| Shoulder Room, Row 1 | 1,405 mm | 1,532 mm | 0 mm |
| Legroom, Row 1 | 1,059 mm | 1,026 mm | 0 mm |
| Headroom, Row 2 | 942 mm | 986 mm | -44 mm |
| Shoulder Room, Row 2 | 1,397 mm | 1,461 mm | 0 mm |
| Legroom, Row 2 | 894 mm | 1,024 mm | 893 mm |
| Total Legroom | 1,953 mm (over 2 rows) | 2,050 mm (over 2 rows) | -1 mm |
| Cargo Volume, Minimum | 357 L | 527 L | -170 L |
| Cargo Volume, Behind R2 | 12.6 | 1,821 L | 11.6 |
| Cargo Volume, Maximum | 12.6 | 1,821 L | 11.6 |
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.