| Model Year | 2020 | 2023 | |
| Model | Mercedes-Benz GLA | BMW 3-Series | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr Sedan | |
| Difference | |||
| Wheelbase | 106.3 in | 112.2 in | -5.9 in |
| Length | 173.9 in | 185.9 in | -12 in |
| Width | 71.0 in | 71.9 in | -0.9 in |
| Height | 60.0 in | 56.8 in | 3.2 in |
| Curb Weight | 3296 lb. | 3536 lb. | -240 lb. |
| Fuel Capacity | 14.8 gal. | 15.6 gal. | -0.8 gal. |
| Headroom, Row 1 | 40.0 in | 38.7 in | 1.3 in |
| Shoulder Room, Row 1 | 54.8 in | 56.0 in | -1.2 in |
| Legroom, Row 1 | 41.9 in | 42.0 in | -0.1 in |
| Headroom, Row 2 | 38.4 in | 37.6 in | 0.8 in |
| Shoulder Room, Row 2 | 53.1 in | 54.6 in | -1.5 in |
| Legroom, Row 2 | 33.9 in | 35.2 in | -1.3 in |
| Total Legroom | 75.8 in (over 2 rows) | 77.2 in (over 2 rows) | -1.4 in |
| Cargo Volume, Minimum | 17.2 ft3 | 16.9 ft3 | 0.3 ft3 |
| Cargo Volume, Maximum | 43.6 ft3 | 16.9 ft3 | 26.7 ft3 |
None of our members have yet commented on the seat room and comfort of the 2020 Mercedes-Benz GLA.
None of our members have yet commented on the seat room and comfort of the 2023 BMW 3-Series.