2020 Mercedes GLC Coupe vs. 2020 Audi A4 Allroad

Detailed Review, Specifications & Comparison

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Safety

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The GLC Coupe’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The A4 Allroad doesn’t offer a driver alert monitor.

Both the GLC Coupe and the A4 Allroad have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all-wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Warranty

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There are over 26 percent more Mercedes dealers than there are Audi dealers, which makes it easier should you ever need service under the GLC Coupe’s warranty.

Reliability

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J.D. Power and Associates rated the GLC Coupe third among compact premium suvs in their 2019 Initial Quality Study. The A4 Allroad isn’t in the top three in its category.

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 Audi vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 12 more problems per 100 vehicles, Audi is ranked 22nd.

Engine

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The GLC Coupe’s 2.0 turbo 4-cylinder produces 7 more horsepower (255 vs. 248) than the A4 Allroad’s 2.0 turbo 4-cylinder.

Fuel Economy and Range

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The GLC Coupe has 2.1 gallons more fuel capacity than the A4 Allroad (17.4 vs. 15.3 gallons), for longer range between fill-ups.

Transmission

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A nine-speed automatic is standard on the Mercedes GLC Coupe, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the A4 Allroad.

Brakes and Stopping

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For better stopping power the GLC Coupe’s front brake rotors are larger than those on the A4 Allroad:

GLC Coupe

A4 Allroad

Front Rotors

13.5 inches

13.3 inches

Tires and Wheels

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For better traction, the GLC Coupe’s optional tires are larger than the largest tires available on the A4 Allroad (F:255/45R20 & R:285/40R20 vs. 245/45R18).

The GLC Coupe’s optional 285/40R20 rear tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the A4 Allroad’s 45 series tires.

For better ride, handling and brake cooling the GLC Coupe has standard 19-inch wheels. Only 18-inch wheels are available on the A4 Allroad. The GLC Coupe offers optional 20-inch wheels.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the 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 A4 Allroad doesn’t offer run-flat tires.

Suspension and Handling

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The 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 A4 Allroad doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLC Coupe’s wheelbase is 2.2 inches longer than on the A4 Allroad (113.1 inches vs. 110.9 inches).

For better handling and stability, the track (width between the wheels) on the GLC Coupe is 1.7 inches wider in the front and 2 inches wider in the rear than on the A4 Allroad.

Passenger Space

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The GLC Coupe has 1.5 inches more front headroom, 1.4 inches more front shoulder room, .9 inches more rear headroom, 1.5 inches more rear legroom and 1.3 inches more rear shoulder room than the A4 Allroad.

For enhanced passenger comfort on long trips the GLC Coupe’s rear seats recline. The A4 Allroad’s rear seats don’t recline.

Cargo Capacity

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Pressing a switch automatically lowers the GLC Coupe’s rear seats, to make changing between passengers and cargo easier. The A4 Allroad 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 Audi. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 13% lower rating, Audi is ranked 8th.

Ergonomics

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The 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 A4 Allroad doesn’t offer a remote starting system.

Unlike the driver-only memory seat and mirrors optional at extra cost in the A4 Allroad, the 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 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 A4 Allroad doesn’t offer an easy entry system.

The A4 Allroad’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The GLC Coupe’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

The GLC Coupe has a 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The A4 Allroad doesn’t offer a house-current electrical outlet.

The GLC Coupe’s optional Active Parking Assist can parallel park or back into a parking spot by itself, starting and stopping automatically, with the driver only responsible for switching from reverse to drive. The A4 Allroad Prestige’s automatic parking system requires operating the brakes and transmission to safely park.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/07/15

Motor Trend selected the GLC Coupe as their 2017 Sport Utility of the Year. The A4 Allroad has never been chosen.

The Mercedes GLC outsold the Audi A4/S4 by almost three to one during 2019.

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