Compare the2025 Audi Q3VS 2024 Mercedes GLC

Both the Q3 and GLC have child safety locks to prevent children from opening the rear doors. The Q3 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The GLC’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

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

The Q3 has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The GLC 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.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Q3. But it costs extra on the GLC.

The Q3’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the GLC.

Both the Q3 and the GLC have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, blind spot warning systems, rearview cameras, rear cross-path warning and available around view monitors.

The Q3’s corrosion warranty is 7 years longer than the GLC’s (12 vs. 5 years).

The Audi Q3’s engines use a cast iron block for durability, while the GLC’s engine uses an aluminum block. Aluminum engine blocks are much more prone to warp and crack at high temperatures than cast iron.

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the Q3’s reliability 36 points higher than the GLC.

J.D. Power and Associates rated the Q3 second among small premium suvs in their 2024 Initial Quality Study. The GLC isn’t in the top three in its category.

From surveys of all its subscribers, Consumer Reports’ January 2024 Auto Issue reports that Audi vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Audi 10 places higher in reliability than Mercedes.

To lower fuel costs and make buying fuel easier, the Audi Q3 uses regular unleaded gasoline (premium recommended for maximum performance). The GLC requires premium, which can cost on average about 84.9 cents more per gallon.

The Q3 stops shorter than the GLC:

The Q3’s standard tires provide better handling because they have a lower 55 series profile (height to width ratio) that provides a stiffer sidewall than the GLC’s standard 60 series tires. The Q3’s optional tires have a lower 40 series profile than the GLC’s optional 45 series front tires.

The Q3 handles at .91 G’s, while the GLC 300 4MATIC pulls only .88 G’s of cornering force in a Car and Driver skidpad test.

The Audi Q3 may be more efficient, handle and accelerate better because it weighs about 250 to 350 pounds less than the Mercedes GLC.

The Q3 is 9.1 inches shorter than the GLC, making the Q3 easier to handle, maneuver and park in tight spaces.

The Q3 has a much larger cargo volume than the GLC with its rear seat up (23.7 vs. 21.9 cubic feet).

Heated windshield washer nozzles are standard on the Q3 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The GLC doesn’t offer heated windshield washer nozzles.

Consumer Reports® recommends the Audi Q3, based on reliability, safety and performance. The Mercedes GLC isn't recommended.