Compare the2023 Mercedes GLCVS 2023 Acura RDX

For enhanced safety, the front and rear seat shoulder belts of the Mercedes GLC 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 Acura RDX doesn’t offer pretensioners for its rear seat belts.

The GLC’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The RDX doesn’t offer pre-crash pretensioners.

The GLC 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 RDX doesn’t offer a whiplash protection system.

Over 200 people are killed each year when backed over by motor vehicles. The GLC 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 RDX doesn’t offer backup collision prevention brakes.

Both the GLC and RDX have rear cross-traffic warning, but the GLC has Active Brake Assist (automatically applies the brakes) to better prevent a collision when backing near traffic. The RDX’s Rear Cross Traffic Monitor doesn’t automatically brake.

The GLC’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 RDX doesn’t offer a driver alert monitor.

Both the GLC and the RDX have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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, available all wheel drive, lane departure warning systems and around view monitors.

There are over 41 percent more Mercedes dealers than there are Acura dealers, which makes it easier should you ever need service under the GLC’s warranty.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Acura vehicles. With 3 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Acura.

J.D. Power and Associates’ 2022 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Mercedes vehicles are more reliable than Acura With 49 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks Mercedes higher than Acura.

The GLC’s 2.0 turbo 4-cylinder hybrid produces 15 lbs.-ft. more torque (295 vs. 280) than the RDX’s 2.0 turbo 4-cylinder.

As tested in Car and Driver the Mercedes GLC is faster than the Acura RDX:

On the EPA test cycle the GLC gets better mileage than the RDX:

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

For better stopping power the GLC’s brake rotors are larger than those on the RDX:

The GLC’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the RDX are solid, not vented.

The GLC stops much shorter than the RDX:

The GLC’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 RDX A-Spec’s 45 series tires.

For a smoother ride and more stable handling, the GLC’s wheelbase is 4.8 inches longer than on the RDX (113.1 inches vs. 108.3 inches).

The GLC 300 4MATIC handles at .88 G’s, while the RDX A-Spec AWD pulls only .83 G’s of cornering force in a Car and Driver skidpad test.

The GLC has 1.7 inches more front headroom, 4 inches more front hip room, 1.4 inches more rear headroom and 8.4 inches more rear hip room than the RDX.

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

The GLC’s standard towing capacity is much higher than the RDX’s (5291 vs. 1500 pounds).

Standard Trailer Stability Assist on the GLC 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 RDX doesn’t offer electronic trailer sway control.

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

Unlike the driver-only memory system in the RDX, the GLC 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’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The RDX’s standard intermittent wipers change speed with vehicle speed, but can’t turn on and off or change speed based on changing rainfall.

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

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes GLC has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the RDX.

The GLC offers an optional 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 RDX doesn’t offer a house-current electrical outlet.

The GLC’s 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 RDX doesn’t offer an automated parking system.

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

The Mercedes GLC outsold the Acura RDX by almost three to one during 2022.