| Model Year | 2021 | 2011 | |
| Model | Porsche Cayenne Coupe | Mercedes-Benz R-Class | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr SUV | |
| Difference | |||
| Wheelbase | 2,896 mm | 3,216 mm | -1 mm |
| Length | 4,933 mm | 5,156 mm | -1 mm |
| Width | 1,984 mm | 1,958 mm | 0 mm |
| Height | 1,676 mm | 1,661 mm | 0 mm |
| Curb Weight | 2,115 kg | 2,245 kg | 0 kg |
| Fuel Capacity | 90 L | 80 L | 10 L |
| Headroom, Row 1 | 0 mm | 1,011 mm | -1 mm |
| Shoulder Room, Row 1 | 0 mm | 1,532 mm | -1 mm |
| Legroom, Row 1 | 0 mm | 1,011 mm | -1 mm |
| Headroom, Row 2 | 0 mm | 1,026 mm | -1 mm |
| Shoulder Room, Row 2 | 0 mm | 1,514 mm | -1 mm |
| Legroom, Row 2 | 0 mm | 919 mm | -919 mm |
| Headroom, Row 3 | 0 mm | 945 mm | -945 mm |
| Shoulder Room, Row 3 | 0 mm | 1,341 mm | -1 mm |
| Legroom, Row 3 | 0 mm | 823 mm | -823 mm |
| Total Legroom | 0 mm (over 1 row) | 2,753 mm (over 3 rows) | -2 mm |
| Cargo Volume, Minimum | 623 L | 430 L | 193 L |
| Cargo Volume, Behind R2 | 22.0 | 1,195 L | 21 |
| Cargo Volume, Maximum | 1,538 L | 2,407 L | -1 L |
None of our members have yet commented on the seat room and comfort of the 2021 Porsche Cayenne Coupe.
None of our members have yet commented on the seat room and comfort of the 2011 Mercedes-Benz R-Class.