| Model Year | 2021 | 2015 | |
| Model | Mercedes-Benz GLB | Audi Q3 | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr SUV | |
| Difference | |||
| Wheelbase | 111.4 in | 102.5 in | 8.9 in |
| Length | 182.4 in | 172.6 in | 9.8 in |
| Width | 72.2 in | 72.1 in | 0.1 in |
| Height | 65.3 in | 62.6 in | 2.7 in |
| Curb Weight | 3638 lb. | 3494 lb. | 144 lb. |
| Fuel Capacity | 15.9 gal. | 16.9 gal. | -1 gal. |
| Headroom, Row 1 | 40.7 in | 37.0 in | 3.7 in |
| Shoulder Room, Row 1 | 55.9 in | 55.8 in | 0.1 in |
| Legroom, Row 1 | 41.1 in | 40.0 in | 1.1 in |
| Headroom, Row 2 | 39.3 in | 37.4 in | 1.9 in |
| Shoulder Room, Row 2 | 54.9 in | 53.6 in | 1.3 in |
| Legroom, Row 2 | 38.1 in | 31.1 in | 7 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) | 71.1 in (over 2 rows) | 37.2 in |
| Cargo Volume, Minimum | 22.0 ft3 | 16.7 ft3 | 5.3 ft3 |
| Cargo Volume, Maximum | 62.0 ft3 | 48.2 ft3 | 13.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2021 Mercedes-Benz GLB.
None of our members have yet commented on the seat room and comfort of the 2015 Audi Q3.