| Model Year | 2016 | 2013 | |
| Model | Audi A8 / S8 | Mercedes-Benz M-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 122.9 in | 114.8 in | 8.1 in |
| Length | 207.4 in | 189.1 in | 18.3 in |
| Width | 76.7 in | 75.2 in | 1.5 in |
| Height | 57.9 in | 70.7 in | -12.8 in |
| Curb Weight | 4464 lb. | 4751 lb. | -287 lb. |
| Fuel Capacity | 21.7 gal. | 24.6 gal. | -2.9 gal. |
| Headroom, Row 1 | 37.2 in | 38.9 in | -1.7 in |
| Shoulder Room, Row 1 | 59.1 in | 58.5 in | 0.6 in |
| Legroom, Row 1 | 41.4 in | 40.3 in | 1.1 in |
| Headroom, Row 2 | 39.1 in | 38.5 in | 0.6 in |
| Shoulder Room, Row 2 | 57.8 in | 58.4 in | -0.6 in |
| Legroom, Row 2 | 42.9 in | 38.4 in | 4.5 in |
| Total Legroom | 84.3 in (over 2 rows) | 78.7 in (over 2 rows) | 5.6 in |
| Cargo Volume, Minimum | 14.2 ft3 | 36.2 ft3 | -22 ft3 |
| Cargo Volume, Maximum | 14.2 ft3 | 71.0 ft3 | -56.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2016 Audi A8 / S8.
| 2013 Mercedes-Benz M-Class Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2013 | 4dr SUV turbocharged 240hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
No more back or leg pain on long trips. see full Mercedes-Benz M-Class review |