Compare the2024 Mercedes AMG GLCVS 2024 Porsche Cayenne

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

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

The AMG 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 Cayenne doesn’t offer a driver alert monitor.

Both the AMG GLC and the Cayenne 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, 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, available lane departure warning systems and around view monitors.

There are almost 2 times as many Mercedes dealers as there are Porsche dealers, which makes it much easier should you ever need service under the AMG GLC’s warranty.

The AMG GLC’s 2.0 turbo 4-cylinder hybrid produces 68 more horsepower (416 vs. 348) and 1 lbs.-ft. more torque (369 vs. 368) than the Cayenne’s standard 3.0 turbo V6.

On the EPA test cycle the AMG GLC gets better mileage than the Cayenne running its gasoline engine:

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

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

In an emergency stopping situation, many drivers don’t press the brakes with enough force to stop the vehicle in the shortest distance. The AMG GLC has standard Brake Assist to detect emergency braking situations (by how hard and how quickly the brake pedal is pressed) and then automatically apply maximum braking immediately in order to help prevent a collision. The Cayenne doesn’t offer a brake assist feature.

For better traction, the AMG GLC has larger front tires than the Cayenne (F:265/45R20 & R:295/40R20 vs. F:255/55R20 & R:295/45R20).

The AMG GLC 43’s standard 265/45R20 front and 295/40R20 rear tires provide better handling because they have a lower 45 series front and 40 series rear profile (height to width ratio) that provides a stiffer sidewall than the Cayenne’s standard 55 series front and 45 series rear tires.

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

The AMG GLC’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 Cayenne doesn’t offer drift compensation steering.

The AMG GLC is 7 inches shorter than the Cayenne Turbo E-Hybrid, making the AMG GLC easier to handle, maneuver and park in tight spaces.

The AMG GLC has 2.3 inches more front headroom, .7 inches more rear headroom and .1 inches more rear shoulder room than the Cayenne.

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

The AMG GLC 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 Cayenne doesn’t offer a remote starting system.

The AMG GLC’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 Cayenne’s cruise control switches are unlit, making them difficult to find at night and operate safely.

Heated windshield washer fluid is standard on the AMG GLC to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The Cayenne doesn’t offer heated windshield washer fluid. Its standard heated washer nozzles will defrost the washer fluid but not the windshield.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the AMG GLC has standard extendable sun visors. The Cayenne doesn’t offer extendable visors.

The AMG GLC 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 Cayenne doesn’t offer a house-current electrical outlet.

The Mercedes GLC outsold the Porsche Cayenne by almost two to one during 2023.