| Model year | 2007 |
| Make | Mercedes-Benz |
| Model | GL450 |
| Style | SUV |
| Base MSRP | $54,900 |
| As-tested MSRP | $63,005 |
| Drive type | All-wheel drive |
| Engine type | V8 |
| Displacement (cc/cu-in) | 4663cc (285 cu-in) |
| Valvetrain | double overhead camshaft |
| Compression ratio (x:1) | 10.7 |
| Horsepower (hp @ rpm) | 335@6,000 |
| Torque (lb-ft @ rpm) | 339@2,700 |
| Transmission type | 7-speed automatic |
| Suspension, front | Double control arm, air springs, gas shocks, stabilizer bar |
| Suspension, rear | Four link, air springs, gas shocks, stabilizer bar |
| Steering type | Speed-sensitive power rack and pinion |
| Tire brand | Continental |
| Tire model | 4x4 Contact |
| Tire type | all season |
| Tire size, front | 265/60R18 |
| Tire size, rear | 265/60R18 |
| Wheel size | 18 X 8.5 |
| Wheel material | alloy |
| Brakes, front | Four wheel disc w/ABS |
| Brakes, rear | ventilated disc |
| 0-45 mph (sec.) | 4.2 |
| 0-60 mph (sec.) | 6.7 |
| 0-75 mph (sec.) | 9.7 |
| 1/4-mile (sec. @ mph) | 15.1 @ 91.6 |
| Braking, 30-0 mph (ft.) | 32.3 |
| 60-0 mph (ft.) | 126.6 |
| Slalom, 6 x 100 ft. (mph) | 59.00 |
| Skid pad, 200-ft. diameter (lateral g) | .69 |
| Sound level @ idle (dB) | 42.6 |
| @ Full throttle (dB) | 72.5 |
| @ 70 mph cruise (dB) | 62.6 |
| Acceleration comments | All runs made in "D." No brake torque. Shifts come slightly before indicated redline. |
| Braking rating | Good |
| Braking comments | Long, soft pedal travel. Reasonable effectiveness despite lame feel. |
| Handling rating | Good |
| Handling comments | Progressive understeer until ESP kicks in, then you just stay on the throttle. In the slalom the quickest runs were made with smooth inputs to avoid stability control intervention. |
| Elevation (ft.) | 400 |
| Temperature (°F) | 59 |
| Wind (mph, direction) | 4.6 |
| EPA fuel economy (mpg) | 14 City 18 Highway |
| Edmunds observed (mpg) | 14.9 |
| Fuel tank capacity (U.S. gal.) | 26.4 |
| Curb weight, mfr. claim (lbs.) | 5,249 |
| Length (in.) | 200.3 |
| Width (in.) | 75.6 |
| Height (in.) | 72.4 |
| Wheelbase (in.) | 121.1 |
| Track, front (in.) | 65.0 |
| Track, rear (in.) | 65.1 |
| Turning circle (ft.) | 39.7 |
| Legroom, front (in.) | 43.0 |
| Legroom, rear (in.) | 40.0 |
| Legroom, 3rd row (in.) | 34.2 |
| Headroom, front (in.) | 40.1 |
| Headroom, rear (in.) | 40.6 |
| Headroom, 3rd row (in.) | 38.2 |
| Shoulder room, front (in.) | 58.3 |
| Shoulder room, rear (in.) | 58.9 |
| Shoulder room, 3rd row (in.) | 50.5 |
| Seating capacity | 7 |
| Cargo volume (cu-ft) | 14.0 |
| Max. cargo volume, seats folded (cu-ft) | 83.3 |
| Bumper-to-bumper | 4 years/50,000 miles |
| Powertrain | 4 years/50,000 miles |
| Corrosion | 4 years/50,000 miles |
| Roadside assistance | Unlimited mileage |
| Free scheduled maintenance | None |
| Front airbags | Standard |
| Side airbags | Standard |
| Head airbags | Standard |
| Antilock brakes | Standard |
| Electronic brake enhancements | Brake Assist Plus |
| Traction control | Standard |
| Stability control | Standard |
| Rollover protection | N/A |
| Tire-pressure monitoring system | tire pressure monitoring |
| Emergency assistance system | Standard |
| NHTSA crash test, driver | Not Tested |
| NHTSA crash test, passenger | Not Tested |
| NHTSA crash test, side front | Not Tested |
| NHTSA crash test, side rear | Not Tested |
| NHTSA rollover resistance | Not Tested |
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