| Model Year | 2014 | 2021 | |
| Model | Audi A6 / S6 | Mercedes-Benz GLS | |
| Engine | turbocharged 4.0L V8 DOHC-4v 420 hp@5500 406 lb-ft@1400 |
turbocharged 4.0L V8 Hybrid DOHC-4v 603 hp@5750 627 lb-ft@2500 |
|
| Transmission | 7-speed automated manual | 9-speed shiftable automatic | |
| Drivetrain | AWD | AWD | |
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 114.7 in | 123.4 in | -8.7 in |
| Length | 193.9 in | 205.0 in | -11.1 in |
| Width | 73.8 in | 79.9 in | -6.1 in |
| Height | 57.8 in | 71.8 in | -14 in |
| Curb Weight | 4398 lb. | 5828 lb. | -1430 lb. |
| Fuel Capacity | 19.8 gal. | 23.8 gal. | -4 gal. |
| Headroom, Row 1 | 37.2 in | 39.4 in | -2.2 in |
| Shoulder Room, Row 1 | 57.5 in | 59.3 in | -1.8 in |
| Legroom, Row 1 | 41.3 in | 40.3 in | 1 in |
| Headroom, Row 2 | 37.8 in | 40.2 in | -2.4 in |
| Shoulder Room, Row 2 | 56.3 in | 58.5 in | -2.2 in |
| Legroom, Row 2 | 37.4 in | 41.9 in | -4.5 in |
| Legroom, Row 3 | 0.0 in | 34.6 in | -34.6 in |
| Total Legroom | 78.7 in (over 2 rows) | 116.8 in (over 3 rows) | -38.1 in |
| Cargo Volume, Minimum | 14.1 ft3 | 17.4 ft3 | -3.3 ft3 |
| Cargo Volume, Behind R2 | 14.1 | 42.7 ft3 | -28.6 |
| Cargo Volume, Maximum | 14.1 ft3 | 84.7 ft3 | -70.6 ft3 |
None of our members have yet commented on the seat room and comfort of the 2014 Audi A6 / S6.
None of our members have yet commented on the seat room and comfort of the 2021 Mercedes-Benz GLS.