| Model Year | 2023 | 2017 | |
| Model | Mercedes-Benz GLB | BMW i8 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 2dr Coupe | |
| Difference | |||
| Wheelbase | 111.4 in | 110.2 in | 1.2 in |
| Length | 182.4 in | 184.9 in | -2.5 in |
| Width | 72.2 in | 76.5 in | -4.3 in |
| Height | 65.3 in | 50.8 in | 14.5 in |
| Curb Weight | 3638 lb. | 3455 lb. | 183 lb. |
| Fuel Capacity | 15.9 gal. | 11.1 gal. | 4.8 gal. |
| Headroom, Row 1 | 40.7 in | 38.7 in | 2 in |
| Shoulder Room, Row 1 | 55.9 in | 61.1 in | -5.2 in |
| Legroom, Row 1 | 41.1 in | 0.0 in | 41.1 in |
| Headroom, Row 2 | 39.3 in | 32.4 in | 6.9 in |
| Shoulder Room, Row 2 | 54.9 in | 51.5 in | 3.4 in |
| Legroom, Row 2 | 38.1 in | 0.0 in | 38.1 in |
| Headroom, Row 3 | 34.8 in | 0.0 in | 34.8 in |
| Shoulder Room, Row 3 | 43.8 in | 0.0 in | 43.8 in |
| Legroom, Row 3 | 29.1 in | 0.0 in | 29.1 in |
| Total Legroom | 108.3 in (over 3 rows) | 0 in (over 1 rows) | 108.3 in |
| Cargo Volume, Minimum | 22.0 ft3 | 4.7 ft3 | 17.3 ft3 |
| Cargo Volume, Maximum | 62.0 ft3 | 4.7 ft3 | 57.3 ft3 |
None of our members have yet commented on the seat room and comfort of the 2023 Mercedes-Benz GLB.
None of our members have yet commented on the seat room and comfort of the 2017 BMW i8.