| Model Year | 2007 | 2018 | |
| Model | Lexus GS | Mercedes-Benz GLS | |
| Engine | |||
| Transmission | |||
| Drivetrain | |||
| Body | 4dr Sedan | 4dr SUV | |
| Difference | |||
| Wheelbase | 112.2 in | 121.1 in | -8.9 in |
| Length | 190.0 in | 202.0 in | -12 in |
| Width | 71.7 in | 76.1 in | -4.4 in |
| Height | 56.1 in | 72.8 in | -16.7 in |
| Curb Weight | 3704 lb. | 5400 lb. | -1696 lb. |
| Fuel Capacity | 18.8 gal. | 26.4 gal. | -7.6 gal. |
| Headroom, Row 1 | 37.8 in | 41.2 in | -3.4 in |
| Shoulder Room, Row 1 | 56.3 in | 58.5 in | -2.2 in |
| Hip Room, Row 1 | 54.4 in | 0.0 in | 54.4 in |
| Legroom, Row 1 | 43.5 in | 40.3 in | 3.2 in |
| Headroom, Row 2 | 37.0 in | 40.0 in | -3 in |
| Shoulder Room, Row 2 | 55.1 in | 58.3 in | -3.2 in |
| Hip Room, Row 2 | 51.4 in | 0.0 in | 51.4 in |
| Legroom, Row 2 | 36.4 in | 38.5 in | -2.1 in |
| Headroom, Row 3 | 0.0 in | 38.9 in | -38.9 in |
| Shoulder Room, Row 3 | 0.0 in | 50.5 in | -50.5 in |
| Legroom, Row 3 | 0.0 in | 35.0 in | -35 in |
| Total Legroom | 79.9 in (over 2 rows) | 113.8 in (over 3 rows) | -33.9 in |
| Cargo Volume, Minimum | 12.7 ft3 | 16.0 ft3 | -3.3 ft3 |
| Cargo Volume, Behind R2 | 12.7 | 49.4 ft3 | -36.7 |
| Cargo Volume, Maximum | 12.7 ft3 | 93.8 ft3 | -81.1 ft3 |
| 2007 Lexus GS Seat Room and Comfort: Pros | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 245-horsepower 3.0L V6 6-speed shiftable automatic AWD |
Very good front seats with excellent back and head/neck spport for those of us who are spinally challengged. see full Lexus GS review |
| 2007 Lexus GS Seat Room and Comfort: Cons | ||
| Year | Body/Powertrain | Comment |
| 2006 | 4dr Sedan 300-horsepower 4.3L V8 6-speed shiftable automatic RWD |
comfortable but tight see full Lexus GS review |
None of our members have yet commented on the seat room and comfort of the 2018 Mercedes-Benz GLS.