| Model Year | 2018 | 2023 | |
| Model | BMW 3-Series | Mercedes-Benz GLB | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Wagon | 4dr SUV | |
| Difference | |||
| Wheelbase | 110.6 in | 111.4 in | -0.8 in |
| Length | 182.0 in | 182.4 in | -0.4 in |
| Width | 71.3 in | 72.2 in | -0.9 in |
| Height | 56.3 in | 65.3 in | -9 in |
| Curb Weight | 3662 lb. | 3638 lb. | 24 lb. |
| Fuel Capacity | 15.8 gal. | 15.9 gal. | -0.1 gal. |
| Headroom, Row 1 | 40.4 in | 40.7 in | -0.3 in |
| Shoulder Room, Row 1 | 55.1 in | 55.9 in | -0.8 in |
| Legroom, Row 1 | 42.0 in | 41.1 in | 0.9 in |
| Headroom, Row 2 | 38.3 in | 39.3 in | -1 in |
| Shoulder Room, Row 2 | 55.1 in | 54.9 in | 0.2 in |
| Legroom, Row 2 | 35.0 in | 38.1 in | -3.1 in |
| Headroom, Row 3 | 0.0 in | 34.8 in | -34.8 in |
| Shoulder Room, Row 3 | 0.0 in | 43.8 in | -43.8 in |
| Legroom, Row 3 | 0.0 in | 29.1 in | -29.1 in |
| Total Legroom | 77 in (over 2 rows) | 108.3 in (over 3 rows) | -31.3 in |
| Cargo Volume, Minimum | 17.5 ft3 | 22.0 ft3 | -4.5 ft3 |
| Cargo Volume, Maximum | 53.0 ft3 | 62.0 ft3 | -9 ft3 |
None of our members have yet commented on the seat room and comfort of the 2018 BMW 3-Series.
None of our members have yet commented on the seat room and comfort of the 2023 Mercedes-Benz GLB.