| Type | 4-door, 7-passenger full-size SUV |
| Layout | Front engine/all-wheel drive |
| Engine | 3.0-litre V6, DOHC, 24 valves, diesel |
| 4.6-litre V8, DOHC, 32 valves | |
| 5.5-litre V8, DOHC, 32 valves | |
| Horsepower | 210 @ 3400 rpm |
| 335 @ 6000 rpm | |
| 382 @ 6000 rpm | |
| Torque (lb-ft) | 400 @ 1600 rpm |
| 339 @ 2700 rpm | |
| 391 @ 2800 rpm | |
| Transmission | 7-speed automatic |
| Tires GL350, GL450 | P275/50R20 all-season run-flat |
| Tires GL550 | P295/40R21 all-season |
| Curb weight GL350 | 2460 kg (5423 lbs) |
| Curb weight GL450 | 2425 kg (5346 lbs) |
| Curb weight GL550 | 2515 kg (5544 lbs) |
| Wheelbase | 3075 mm (121.1 in) |
| Length | 5088 mm (200.3 in) |
| Width | 1920 mm (75.5 in)(w/out mirrors) |
| 2127 mm (83.7 in)(w/mirrors) | |
| Height | 1840 mm (72.4 in) |
| Towing capacity | 3402 kg (7500 lbs) |
| Cargo capacity | 200 litres (7.0 cu.ft.)(behind 3rd row) |
| 1240 litres (43.8 cu.ft.)(3rd row folded) | |
| 2300 litres (81.2 cu.ft.)(2nd & 3rd row folded) | |
| Fuel consumption 350 | City: 12.4 L/100 km (23 mpg Imp) |
| Hwy: 8.8 L/100 km (32 mpg Imp) | |
| Fuel consumption 450 | City: 16.4 L/100 km (17 mpg Imp) |
| Hwy: 11.5 L/100 km (25 mpg Imp) | |
| Fuel consumption 550 | City: 16.6 L/100 km (17 mpg Imp) |
| Hwy: 11.7 L/100 km (24 mpg Imp) | |
| Fuel type | Diesel (GL350 BlueTEC) |
| Premium (GL450, GL550) | |
| Warranty | 4 yrs/80,000 km |
| Powertrain warranty | 4 yrs/80,000 km |
| Side airbags | Standard |
| Curtain airbags | Standard |
| Anti-lock brakes | Standard |
| Traction control | Standard |
| Stability control | Standard |
| Assembly location | Tuscaloosa, Alabama |

