For enhanced safety, the front and rear seat shoulder belts of the Mercedes G Class have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The BMW X5 doesn’t offer pretensioners for the rear seat belts.
For enhanced safety, the front and rear seat shoulder belts of the Mercedes G Class are height adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW X5 doesn’t offer height adjustable seat belts.
Both the G Class and the X5 have standard driver and passenger frontal airbags, head airbags, plastic fuel tanks, four wheel antilock brakes, all wheel drive, traction control and electronic stability systems to prevent skidding.
The G Class has a solid front axle with a floating power axle for durability that the X5’s independent front suspension and exposed front driveshafts don’t offer.
J.D. Power and Associates’ 2008 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than BMW vehicles. J.D. Power ranks Mercedes fourth in initial quality, above the industry average. With 22 more problems per 100 vehicles, BMW is ranked 20th, below the industry average.
The G550’s standard 5.5 DOHC V8 produces 122 more horsepower (382 vs. 260) and 166 lbs.-ft. more torque (391 vs. 225) than the X5 3.0si’s standard 3.0 DOHC 6 cyl. The G550’s 5.5 DOHC V8 produces 32 more horsepower (382 vs. 350) and 41 lbs.-ft. more torque (391 vs. 350) than the X5 4.8i’s standard 4.8 DOHC V8. The G55’s standard 5.4 supercharged V8 produces 150 more horsepower (500 vs. 350) and 166 lbs.-ft. more torque (516 vs. 350) than the X5 4.8i’s standard 4.8 DOHC V8.
The G Class has 2.9 gallons more fuel capacity than the X5 (25.4 vs. 22.5 gallons), for longer range between fill-ups.
For better traction, the G Class has larger standard tires than the X5 (265/60R18 vs. 255/55R18).
The G Class has a standard full size spare tire so your trip isn’t interrupted by a flat. A full size spare isn’t available on the X5, it requires you to depend on a temporary spare or run-flat tires, either of which has mileage and speed limitations.
The G Class is 6.6 inches shorter than the X5, making the G Class easier to handle, maneuver and park in tight spaces.
The G Class has 21.6 cubic feet more passenger volume than the X5 (124 vs. 102.4).
The G Class has 2.9 inches more front headroom, 12.5 inches more front legroom, 1 inch more rear headroom and 5.3 inches more rear legroom than the X5.
The G Class has a much larger cargo area with its rear seat up than the X5 5-Passenger with its rear seat up (45.2 vs. 21.9 cubic feet). The G Class has a much larger cargo area with its rear seat folded than the X5 with its rear seat folded (79.5 vs. 61.8 cubic feet).