2019 BMW X7 vs. 2019 Mercedes G-Class

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the middle seat shoulder belts of the BMW X7 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 Mercedes G-Class doesn’t offer height-adjustable middle seat belts.

The X7 has standard Post-Crash Braking, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The G-Class doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

The X7 offers an optional Surround View to allow the driver to see objects all around the vehicle on a screen. The G-Class only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

For better protection of the passenger compartment, the X7 uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The G-Class uses a body-on-frame design, which has no frame members above the floor of the vehicle.

Both the X7 and the G-Class have standard driver and passenger frontal airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, rear cross-path warning and driver alert monitors.

Warranty

The X7’s corrosion warranty is 7 years longer than the G-Class’ (12 vs. 5 years).

BMW pays for scheduled maintenance on the X7 for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the G-Class.

Reliability

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks BMW 11th in initial quality, above the industry average. With 5 more problems per 100 vehicles, Mercedes is ranked 15th.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that BMW vehicles are more reliable than Mercedes vehicles. J.D. Power ranks BMW 7th in reliability, above the industry average. With 12 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that BMW vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks BMW 9 places higher in reliability than Mercedes.

Engine

The X7 xDrive50i’s standard 4.4 turbo V8 produces 40 more horsepower (456 vs. 416) and 29 lbs.-ft. more torque (479 vs. 450) than the G 550’s standard 4.0 turbo V8.

Fuel Economy and Range

On the EPA test cycle the X7 gets better fuel mileage than the G-Class:

MPG

X7

AWD

xDrive40i 3.0 turbo 6 cyl.

20 city/25 hwy

xDrive50i 4.4 turbo V8

15 city/21 hwy

G-Class

AWD

550 4.0 turbo V8

13 city/17 hwy

AMG 63 4.0 turbo V8

13 city/15 hwy

Regenerative brakes improve the X7’s fuel efficiency by converting inertia back into energy instead of wasting it. The G-Class doesn’t offer a regenerative braking system.

Brakes and Stopping

For better stopping power the X7’s brake rotors are larger than those on the G-Class:

X7 xDrive50i

X7 M Sport

G-Class

Front Rotors

14.7 inches

15.6 inches

13.9 inches

Rear Rotors

14.6 inches

14.6 inches

13.6 inches

Tires and Wheels

For better traction, The X7’s optional tires are larger than the largest tires available on the G-Class (F:275/40R22 & R:315/35R22 vs. 275/55R19).

The X7’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the G-Class’ standard 55 series tires. The X7’s optional 275/40R22 front and 315/35R22 rear tires have a lower 40 series front and 35 series rear profile than the G-Class’ optional 50 series tires.

For better ride, handling and brake cooling the X7 has standard 21-inch wheels. Smaller 19-inch wheels are standard on the G-Class.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the X7 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The G-Class doesn’t offer run-flat tires.

Suspension and Handling

For superior ride and handling, the BMW X7 has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Mercedes G-Class has a solid rear axle, with a non-independent rear suspension.

The front and rear suspension of the X7 uses air springs for a smoother, controlled ride than the G-Class, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The X7 has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The X7’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The G-Class doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the X7’s wheelbase is 8.4 inches longer than on the G-Class (122.2 inches vs. 113.8 inches).

For better handling and stability, the track (width between the wheels) on the X7 is 1.8 inches wider in the front and 2.6 inches wider in the rear than on the G-Class.

For better maneuverability, the X7’s turning circle is 1.8 feet tighter than the G-Class’ (42.8 feet vs. 44.6 feet).

Chassis

The BMW X7 may be more efficient, handle and accelerate better because it weighs about 50 to 300 pounds less than the Mercedes G-Class.

Unibody construction lowers the X7’s center of gravity significantly without reducing ground clearance. This contributes to better on the road handling and better off-road performance and stability. In addition, unibody construction makes the chassis stiffer, improving handling and reducing squeaks and rattles. The G-Class uses body-on-frame design instead.

For excellent aerodynamics, the X7 has standard flush composite headlights. The G-Class has recessed headlights that spoil its aerodynamic shape and create extra drag.

The front grille of the X7 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The G-Class doesn’t offer active grille shutters.

Passenger Space

The X7 has standard seating for 7 passengers; the G-Class can only carry 5.

The X7 has 1.1 inches more front legroom, 2.2 inches more front shoulder room and .7 inches more rear shoulder room than the G-Class.

Cargo Capacity

The X7’s cargo area provides more volume than the G-Class.

X7

G-Class

Third Seat Folded

48.6 cubic feet

n/a

Third Seat Removed

n/a

38.1 cubic feet

Second Seat Folded

90.4 cubic feet

68.5 cubic feet

The X7’s rear cargo window opens separately from the rest of the tailgate door to allow quicker loading of small packages. The G-Class’ rear cargo window doesn’t open.

To make loading and unloading groceries and cargo easier, especially for short adults, the X7 has a standard power tailgate, which opens and closes automatically by pressing a button. The G-Class doesn’t offer a power cargo door.

Ergonomics

The X7 offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The G-Class doesn’t offer a heads-up display.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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