| Model Year | 2020 | 2017 | |
| Model | Mercedes-Benz GLB | Porsche Cayenne | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr SUV | 4dr SUV | |
| Difference | |||
| Wheelbase | 2,830 mm | 2,896 mm | 0 mm |
| Length | 4,633 mm | 4,854 mm | 0 mm |
| Width | 1,834 mm | 1,999 mm | 0 mm |
| Height | 1,659 mm | 1,712 mm | 0 mm |
| Curb Weight | 1,650 kg | 2,036 kg | -1 kg |
| Fuel Capacity | 60 L | 85 L | -25 L |
| Headroom, Row 1 | 1,034 mm | 0 mm | 1 mm |
| Shoulder Room, Row 1 | 1,420 mm | 0 mm | 1 mm |
| Legroom, Row 1 | 1,044 mm | 0 mm | 1 mm |
| Headroom, Row 2 | 998 mm | 0 mm | 998 mm |
| Shoulder Room, Row 2 | 1,394 mm | 0 mm | 1 mm |
| Legroom, Row 2 | 968 mm | 0 mm | 968 mm |
| Headroom, Row 3 | 884 mm | 0 mm | 884 mm |
| Shoulder Room, Row 3 | 1,113 mm | 0 mm | 1 mm |
| Legroom, Row 3 | 739 mm | 0 mm | 739 mm |
| Total Legroom | 2,751 mm (over 3 rows) | 0 mm (over 1 row) | 2 mm |
| Cargo Volume, Minimum | 623 L | 671 L | -48 L |
| Cargo Volume, Maximum | 1,756 L | 1,781 L | 0 L |
None of our members have yet commented on the seat room and comfort of the 2020 Mercedes-Benz GLB.
None of our members have yet commented on the seat room and comfort of the 2017 Porsche Cayenne.