| Model Year | 2019 | 2008 | |
| Model | Audi A8 | Mercedes-Benz GL | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan, ext. | 4dr SUV | |
| Difference | |||
| Wheelbase | 123.1 in | 121.1 in | 2 in |
| Length | 208.7 in | 200.6 in | 8.1 in |
| Width | 76.6 in | 76.0 in | 0.6 in |
| Height | 58.5 in | 72.4 in | -13.9 in |
| Curb Weight | 4751 lb. | 5280 lb. | -529 lb. |
| Fuel Capacity | 21.7 gal. | 26.0 gal. | -4.3 gal. |
| Headroom, Row 1 | 38.3 in | 40.1 in | -1.8 in |
| Shoulder Room, Row 1 | 59.1 in | 58.3 in | 0.8 in |
| Legroom, Row 1 | 41.5 in | 40.3 in | 1.2 in |
| Headroom, Row 2 | 38.5 in | 40.6 in | -2.1 in |
| Shoulder Room, Row 2 | 57.6 in | 58.9 in | -1.3 in |
| Legroom, Row 2 | 44.3 in | 39.5 in | 4.8 in |
| Headroom, Row 3 | 0.0 in | 38.2 in | -38.2 in |
| Shoulder Room, Row 3 | 0.0 in | 50.5 in | -50.5 in |
| Legroom, Row 3 | 0.0 in | 34.2 in | -34.2 in |
| Total Legroom | 85.8 in (over 2 rows) | 114 in (over 3 rows) | -28.2 in |
| Cargo Volume, Minimum | 12.5 ft3 | 14.3 ft3 | -1.8 ft3 |
| Cargo Volume, Behind R2 | 12.5 | 43.8 ft3 | -31.3 |
| Cargo Volume, Maximum | 12.5 ft3 | 83.3 ft3 | -70.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2019 Audi A8.
| 2008 Mercedes-Benz GL Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2009 | 4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD |
This SUV has a third row seat that can accommodate adults comfortably, without sacrificing braking and safety. see full Mercedes-Benz GL review |
| 2008 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Excellent, usable 3rd row seating see full Mercedes-Benz GL review |
| 2008 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Roomy and adjustable. see full Mercedes-Benz GL review |
| 2008 | 4dr SUV turbocharged 215hp 3.0L V6 Diesel 7-speed shiftable automatic AWD |
Second row is good. Third row is EXCELLENT. Bigger than some of the monster American SUVs. see full Mercedes-Benz GL review |
| 2007 | 4dr SUV 335-horsepower 4.7L V8 7-speed shiftable automatic AWD |
Large third row seating to accomodate adults in far back row... see full Mercedes-Benz GL review |