| Model Year | 2006 | 2023 | |
| Model | BMW 6-Series | Mercedes-Benz GLC Coupe | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Coupe | 4dr SUV | |
| Difference | |||
| Wheelbase | 109.4 in | 113.1 in | -3.7 in |
| Length | 190.2 in | 186.7 in | 3.5 in |
| Width | 73.0 in | 74.8 in | -1.8 in |
| Height | 54.1 in | 63.9 in | -9.8 in |
| Curb Weight | 3814 lb. | 4028 lb. | -214 lb. |
| Fuel Capacity | 18.5 gal. | 17.4 gal. | 1.1 gal. |
| Headroom, Row 1 | 37.6 in | 38.9 in | -1.3 in |
| Shoulder Room, Row 1 | 56.4 in | 57.3 in | -0.9 in |
| Legroom, Row 1 | 42.0 in | 40.8 in | 1.2 in |
| Headroom, Row 2 | 35.6 in | 38.3 in | -2.7 in |
| Shoulder Room, Row 2 | 49.4 in | 56.5 in | -7.1 in |
| Legroom, Row 2 | 28.8 in | 37.3 in | -8.5 in |
| Total Legroom | 70.8 in (over 2 rows) | 78.1 in (over 2 rows) | -7.3 in |
| Cargo Volume, Minimum | 13.0 ft3 | 17.7 ft3 | -4.7 ft3 |
| Cargo Volume, Maximum | 13.0 ft3 | 49.4 ft3 | -36.4 ft3 |
None of our members have yet commented on the seat room and comfort of the 2006 BMW 6-Series.
None of our members have yet commented on the seat room and comfort of the 2023 Mercedes-Benz GLC Coupe.