| Model Year | 2010 | 2007 | |
| Model | Porsche Cayman | Mercedes-Benz GL | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 2dr Hatch | 4dr SUV | |
| Difference | |||
| Wheelbase | 95.1 in | 121.1 in | -26 in |
| Length | 171.1 in | 200.3 in | -29.2 in |
| Width | 70.9 in | 75.6 in | -4.7 in |
| Height | 51.4 in | 72.4 in | -21 in |
| Curb Weight | 2976 lb. | 5249 lb. | -2273 lb. |
| Fuel Capacity | 16.9 gal. | 26.0 gal. | -9.1 gal. |
| Headroom, Row 1 | 0.0 in | 40.1 in | -40.1 in |
| Shoulder Room, Row 1 | 0.0 in | 58.3 in | -58.3 in |
| Legroom, Row 1 | 0.0 in | 40.3 in | -40.3 in |
| Headroom, Row 2 | 0.0 in | 40.6 in | -40.6 in |
| Shoulder Room, Row 2 | 0.0 in | 58.9 in | -58.9 in |
| Legroom, Row 2 | 0.0 in | 39.5 in | -39.5 in |
| Headroom, Row 3 | 0.0 in | 38.5 in | -38.5 in |
| Shoulder Room, Row 3 | 0.0 in | 50.5 in | -50.5 in |
| Legroom, Row 3 | 0.0 in | 34.0 in | -34 in |
| Total Legroom | 0 in (over 1 rows) | 113.8 in (over 3 rows) | -113.8 in |
| Cargo Volume, Minimum | 14.5 ft3 | 14.3 ft3 | 0.2 ft3 |
| Cargo Volume, Behind R2 | 14.5 | 43.8 ft3 | -29.3 |
| Cargo Volume, Maximum | 14.5 ft3 | 83.3 ft3 | -68.8 ft3 |
None of our members have yet commented on the seat room and comfort of the 2010 Porsche Cayman.
| 2007 Mercedes-Benz GL Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 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 |