| Model Year | 2014 | 2015 | |
| Model | BMW 4-Series | Mercedes-Benz B-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Coupe | 4dr Hatch | |
| Difference | |||
| Wheelbase | 110.6 in | 106.3 in | 4.3 in |
| Length | 182.6 in | 171.6 in | 11 in |
| Width | 71.9 in | 70.3 in | 1.6 in |
| Height | 54.2 in | 61.3 in | -7.1 in |
| Curb Weight | 3470 lb. | 3924 lb. | -454 lb. |
| Fuel Capacity | 15.8 gal. | 0.0 gal. | 15.8 gal. |
| Headroom, Row 1 | 39.8 in | 0.0 in | 39.8 in |
| Shoulder Room, Row 1 | 55.3 in | 0.0 in | 55.3 in |
| Legroom, Row 1 | 42.2 in | 0.0 in | 42.2 in |
| Headroom, Row 2 | 36.1 in | 0.0 in | 36.1 in |
| Shoulder Room, Row 2 | 51.7 in | 0.0 in | 51.7 in |
| Legroom, Row 2 | 33.7 in | 0.0 in | 33.7 in |
| Total Legroom | 75.9 in (over 2 rows) | 0 in (over 1 rows) | 75.9 in |
| Cargo Volume, Minimum | 15.7 ft3 | 21.0 ft3 | -5.3 ft3 |
| Cargo Volume, Maximum | 15.7 ft3 | 51.4 ft3 | -35.7 ft3 |
None of our members have yet commented on the seat room and comfort of the 2014 BMW 4-Series.
None of our members have yet commented on the seat room and comfort of the 2015 Mercedes-Benz B-Class.