2020 Mercedes AMG GLC Coupe vs. 2020 BMW X4 M

Detailed Review, Specifications & Comparison

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Safety

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For enhanced safety, the front and rear seat shoulder belts of the Mercedes AMG GLC Coupe 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 X4 M doesn’t offer pretensioners for the rear seat belts.

For enhanced safety, the front seat shoulder belts of the Mercedes AMG GLC Coupe 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 X4 M doesn’t offer height-adjustable seat belts.

Both the AMG GLC Coupe and the X4 M have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, driver alert monitors, available lane departure warning systems, around view monitors and rear cross-path warning.

Warranty

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There are over 10 percent more Mercedes dealers than there are BMW dealers, which makes it easier should you ever need service under the AMG GLC Coupe’s warranty.

Reliability

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J.D. Power and Associates’ 2019 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 12th in initial quality. With 8 more problems per 100 vehicles, BMW is ranked 20th.

Engine

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The AMG GLC Coupe has more powerful engines than the X4 M:

Torque

AMG GLC 63 Coupe 4.0 turbo V8

479 lbs.-ft.

AMG GLC 63 S Coupe 4.0 turbo V8

516 lbs.-ft.

X4 M 3.0 turbo 6-cylinder

442 lbs.-ft.

X4 M Competition 3.0 turbo 6-cylinder

442 lbs.-ft.

Fuel Economy and Range

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On the EPA test cycle the AMG GLC Coupe gets better fuel mileage than the X4 M:

MPG

AMG GLC Coupe

43 3.0 turbo V6

18 city/24 hwy

63 4.0 turbo V8

16 city/22 hwy

63 S 4.0 turbo V8

16 city/22 hwy

X4 M

3.0 turbo 6-cyl.

14 city/19 hwy

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes AMG GLC Coupe higher (5 out of 10) than the BMW X4 M (3). This means the AMG GLC Coupe produces up to 16.5 pounds less smog-producing pollutants than the X4 M every 15,000 miles.

Transmission

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A nine-speed automatic is standard on the Mercedes AMG GLC Coupe, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the X4 M.

Brakes and Stopping

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For better stopping power the AMG GLC 63 S Coupe’s optional front brake rotors are larger than those on the X4 M:

AMG GLC 63 S

X4 M

Front Rotors

15.8 inches

15.6 inches

The AMG GLC Coupe 63 S offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The X4 M doesn’t offer ceramic brake rotors.

Tires and Wheels

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For better traction, the AMG GLC 63 Coupe’s tires are larger than the largest tires available on the X4 M (F:265/45R20 & R:295/40R20 vs. F:255/45R20 & R:265/45R20).

The AMG GLC 63 Coupe’s standard 295/40R20 rear tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the X4 M’s standard 45 series tires. The AMG GLC Coupe’s optional 295/35R21 rear tires have a lower 35 series profile than the X4 M Competition’s 40 series tires.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the AMG GLC Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The X4 M doesn’t offer run-flat tires.

Suspension and Handling

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The front and rear suspension of the AMG GLC Coupe uses air springs for a smoother, controlled ride than the X4 M, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The AMG GLC Coupe’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The X4 M doesn’t offer drift compensation steering.

For better handling and stability, the average track (width between the wheels) on the AMG GLC Coupe is 1.5 inches wider in the front and 2.1 inches wider in the rear than the track on the X4 M.

For better maneuverability, the AMG GLC Coupe’s turning circle is 1.7 feet tighter than the X4 M’s (39.7 feet vs. 41.4 feet).

Chassis

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The Mercedes AMG GLC Coupe may be more efficient, handle and accelerate better because it weighs up to about 350 pounds less than the BMW X4 M.

Passenger Space

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The AMG GLC Coupe has .1 inches more front legroom, 1.1 inches more rear headroom and 1.7 inches more rear legroom than the X4 M.

For enhanced passenger comfort on long trips the AMG GLC Coupe’s rear seats recline. The X4 M’s rear seats don’t recline.

Cargo Capacity

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Pressing a switch automatically lowers the AMG GLC Coupe’s rear seats, to make changing between passengers and cargo easier. The X4 M doesn’t offer automatic folding seats.

Servicing Ease

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J.D. Power and Associates surveys of service recipients show that Mercedes service is better than BMW. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 23% lower rating, BMW is ranked 11th.

Ergonomics

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The AMG GLC Coupe has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The X4 M doesn’t offer a remote starting system.

Unlike the driver-only memory system in the X4 M, the AMG GLC Coupe offers an optional passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The AMG GLC Coupe’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The X4 M doesn’t offer an easy entry system.

Heated windshield washer nozzles are standard on the AMG GLC Coupe to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The X4 M doesn’t offer heated windshield washer nozzles.

Optional air-conditioned seats in the AMG GLC Coupe keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The X4 M doesn’t offer air-conditioned seats.

The AMG GLC Coupe has a 115-volt a/c outlet, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The X4 M doesn’t offer a house-current electrical outlet.

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