Compare the2026 Mercedes GLC Coupe VS 2026 Audi Q3

The Mercedes GLC Coupe has a standard driver’s side knee airbag mounted low on the dashboard. The knee airbag helps prevent the driver from sliding under the seatbelts or the main frontal airbag; this keeps the driver better positioned during a collision for maximum protection. A knee airbag also helps keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Q3 doesn’t offer knee airbags.

The GLC Coupe has standard NECK-PRO front head restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the NECK-PRO front head restraints system moves the headrests forward to prevent neck and spine injuries. The Q3 doesn’t offer a whiplash protection system.

Over 200 people are killed each year when backed over by motor vehicles. The GLC Coupe has a standard Maneuvering Brake Function that uses rear sensors to monitor for objects to the rear and automatically applies the brakes to prevent a collision. The Q3 doesn’t offer automatic braking for stationary objects directly to the rear.

Earlier warning of stopped traffic, traffic signals, dangerous road conditions, weather, or accidents, can keep driver's safer and prevent crashes. The GLC Coupe has Car-to-X Communication, a system that seamlessly communicates important warnings to the driver about impending danger, if they're available. The Q3 doesn’t offer a system that can receive automated systems from infrastructure or other vehicles.

Both the GLC Coupe and the Q3 have standard driver and passenger frontal airbags, front side-impact airbags, front seat center airbag, side-impact head airbags, front 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, blind spot warning systems, rearview cameras, rear cross-path warning, driver alert monitors and available lane departure warning systems.

The Mercedes GLC Coupe achieved a “Top Safety Pick” rating from the Insurance Institute for Highway Safety (IIHS) for the 2026 model year. This recognition was based on its impressive performance in the small overlap frontal crash test, updated moderate overlap front crash test, updated side impact crash test, headlight evaluations, pedestrian crash prevention testing, and vehicle-to-vehicle crash prevention testing. The Q3 has not yet been evaluated by the IIHS for 2026.

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.

J.D. Power and Associates rated the GLC Coupe first among compact premium suvs in their 2025 Initial Quality Study. The Q3 isn’t in the top three in its category.

J.D. Power and Associates’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Audi vehicles. With 59 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Audi.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Mercedes vehicles are more reliable than Audi With 30 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks Mercedes higher than Audi.

The GLC Coupe’s 2.0 turbo 4-cylinder hybrid produces 22 lbs.-ft. more torque (295 vs. 273) than the Q3’s 2.0 turbo 4-cylinder.

On the EPA test cycle the GLC 300 Coupe gets better fuel mileage than the Q3 (23 city/31 hwy vs. 22 city/29 hwy).

Regenerative brakes improve the GLC Coupe’s fuel efficiency by converting inertia back into energy instead of wasting it. The Q3 doesn’t offer a regenerative braking system.

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 Q3.

For better ride, handling and brake cooling the GLC Coupe has standard 19-inch wheels. Smaller 18-inch wheels are standard on the Q3.

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 Q3 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLC Coupe’s wheelbase is 8.1 inches longer than on the Q3 (113.7 inches vs. 105.6 inches).

For better handling and stability, the track (width between the wheels) on the GLC Coupe is 1.5 inches wider in the front and 2.7 inches wider in the rear than on the Q3.

The design of the Mercedes GLC Coupe amounts to more than styling. The GLC Coupe has an aerodynamic coefficient of drag of .27 Cd. That is significantly lower than the Q3 (.35) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the GLC Coupe get better fuel mileage.

The GLC Coupe has .8 inches more front headroom, .7 inches more front legroom, .6 inches more front shoulder room, .7 inches more rear headroom, 1.1 inches more rear legroom and .7 inches more rear shoulder room than the Q3.

The GLC Coupe has a larger cargo volume with its rear seat folded than the Q3 with its rear seat folded (52.6 vs. 50 cubic feet).

Pressing a button automatically lowers the GLC Coupe’s rear seats, to make changing between passengers and cargo easier. The Q3 doesn’t offer automatic folding seats.

The GLC Coupe’s standard towing capacity is much higher than the Q3’s (3500 vs. 1500 pounds).

Optional Trailer Stability Assist on the GLC Coupe uses the Electronic Stability Program sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The Q3 doesn’t offer electronic trailer sway control.

The engine in the GLC Coupe is mounted longitudinally (North-South), instead of sideways, as in the Q3. This makes it easier to service and maintain, because the accessory belts are in front.

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 Q3 doesn’t offer a remote starting system.

Unlike the driver-only memory seat and mirrors in the Q3, the GLC Coupe has standard driver and 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 power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Q3’s cruise control switches are unlit, making them difficult to find at night and operate safely.

Heated windshield washer fluid is standard on the GLC Coupe to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Q3 doesn’t offer heated windshield washer fluid.

To help drivers see further while navigating curves, the GLC Coupe offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Q3 doesn’t offer cornering lights.

Both the GLC Coupe and the Q3 have standard heated front seats. The GLC Coupe also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Q3.

Optional air-conditioned seats in the GLC Coupe keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The Q3 doesn’t offer air-conditioned seats.

With standard Voice Control with Natural Language Understanding, the GLC Coupe offers the driver hands free control of the radio, climate controls and the navigation computer by simply speaking. The Q3 doesn’t offer a voice control system.

Compared to traditional radio, the Mercedes GLC Coupe’s standard SiriusXM satellite radio provides an unmatched listening experience. Its extensive coverage guarantees consistent, crystal-clear reception across the continental U.S., and access to over 100 channels dedicated to a multitude of genres, including music, news, sports, talk shows, and comedy, many with only limited commercial breaks. Satellite radio costs extra on the Q3.

Motor Trend selected the GLC as their 2017 Sport Utility of the Year. The Q3 has never been chosen.

The Mercedes GLC outsold the Audi Q3 by over three to one during 2025.