| Model Year | 2007 | 2021 | |
| Model | Mercedes-Benz C-Class | BMW X4 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 2,715 mm | 2,865 mm | 0 mm |
| Length | 4,531 mm | 4,763 mm | 0 mm |
| Width | 1,727 mm | 1,918 mm | 0 mm |
| Height | 1,412 mm | 1,621 mm | 0 mm |
| Curb Weight | 1,545 kg | 1,881 kg | 0 kg |
| Fuel Capacity | 62 L | 65 L | -3 L |
| Headroom, Row 1 | 988 mm | 1,024 mm | 987 mm |
| Shoulder Room, Row 1 | 1,349 mm | 1,461 mm | 0 mm |
| Hip Room, Row 1 | 1,318 mm | 0 mm | 1 mm |
| Legroom, Row 1 | 1,059 mm | 1,034 mm | 0 mm |
| Headroom, Row 2 | 947 mm | 953 mm | -6 mm |
| Shoulder Room, Row 2 | 1,379 mm | 1,422 mm | 0 mm |
| Hip Room, Row 2 | 1,384 mm | 0 mm | 1 mm |
| Legroom, Row 2 | 838 mm | 902 mm | -64 mm |
| Total Legroom | 1,897 mm (over 2 rows) | 1,935 mm (over 2 rows) | 0 mm |
| Cargo Volume, Minimum | 345 L | 524 L | -179 L |
| Cargo Volume, Maximum | 12.2 | 1,430 L | 11.2 |
| 2007 Mercedes-Benz C-Class Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2008 | 4dr Sedan 268-horsepower 3.5L V6 7-speed shiftable automatic RWD |
just ok see full Mercedes-Benz C-Class review |
| 2008 | 4dr Sedan supercharged 181hp 1.8L I4 5-speed shiftable automatic RWD |
too tight back there. see full Mercedes-Benz C-Class review |
| 2006 | 4dr Sedan supercharged 154hp 1.8L I4 5-speed shiftable automatic RWD |
Rear seats are narrow and hard. The centre seat is only usable for very small people on very short trips. see full Mercedes-Benz C-Class review |
| 2006 | 4dr Sedan 201-horsepower 2.5L V6 7-speed shiftable automatic RWD |
There is no rear seat room. see full Mercedes-Benz C-Class review |
| 2006 | 4dr Sedan 228-horsepower 3.0L V6 7-speed shiftable automatic RWD |
fake leather is too cheap for a m-b. seats too hard. see full Mercedes-Benz C-Class review |
None of our members have yet commented on the seat room and comfort of the 2021 BMW X4.