2019 Mercedes AMG GLC 63 Coupe vs. 2019 Porsche Cayenne

Detailed Review, Specifications & Comparison

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Safety

The AMG GLC 63 Coupe’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.

The AMG GLC 63 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 Cayenne doesn’t offer a driver alert monitor.

Both the AMG GLC 63 Coupe 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, rearview cameras, available lane departure warning systems and around view monitors.

Warranty

There are over 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 63 Coupe’s warranty.

Engine

The AMG GLC 63 Coupe has more powerful engines than the Cayenne:

Horsepower

Torque

AMG GLC 63 Coupe 4.0 turbo V8

469 HP

479 lbs.-ft.

AMG GLC63 S Coupe 4.0 turbo V8

503 HP

516 lbs.-ft.

Cayenne 3.0 turbo V6

335 HP

332 lbs.-ft.

Cayenne S 2.9 turbo V6

434 HP

406 lbs.-ft.

Cayenne E-Hybrid 3.0 turbo V6

455 HP

516 lbs.-ft.

As tested in Motor Trend the AMG GLC63 S Coupe is faster than the Porsche Cayenne (base engine):

AMG GLC 63

Cayenne

Zero to 60 MPH

3.2 sec

5.1 sec

Quarter Mile

11.7 sec

13.7 sec

Speed in 1/4 Mile

116.5 MPH

100.7 MPH

Transmission

A nine-speed automatic is standard on the Mercedes AMG GLC 63 Coupe, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Cayenne.

Brakes and Stopping

For better stopping power the AMG GLC 63 Coupe’s standard brake rotors are larger than those on the Cayenne:

AMG GLC 63

Cayenne

Front Rotors

15.4 inches

13.8 inches

Rear Rotors

14.2 inches

13 inches

The AMG GLC 63 Coupe stops shorter than the Cayenne:

AMG GLC 63

Cayenne

70 to 0 MPH

158 feet

159 feet

Car and Driver

Tires and Wheels

For better traction, the AMG GLC 63 Coupe has larger tires than the Cayenne (F:265/45R20 & R:295/40R20 vs. F:255/55R19 & R:275/50R19).

The AMG GLC 63 Coupe’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 50 series rear tires.

For better ride, handling and brake cooling the AMG GLC 63 Coupe has standard 20-inch wheels. Smaller 19-inch wheels are standard on the Cayenne.

Suspension and Handling

The front and rear suspension of the AMG GLC 63 Coupe uses air springs for a smoother, controlled ride than the Cayenne, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The AMG GLC 63 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 Cayenne doesn’t offer drift compensation steering.

The AMG GLC63 S Coupe handles at .96 G’s, while the Cayenne pulls only .95 G’s of cornering force in a Motor Trend skidpad test.

The AMG GLC63 S Coupe executes Motor Trend’s “Figure Eight” maneuver quicker than the Cayenne (24.1 seconds @ .85 average G’s vs. 25 seconds @ .74 average G’s).

Chassis

The AMG GLC 63 Coupe is 6.9 inches shorter than the Cayenne, making the AMG GLC 63 Coupe easier to handle, maneuver and park in tight spaces.

Cargo Capacity

Pressing a switch automatically lowers the AMG GLC 63 Coupe’s rear seats, to make changing between passengers and cargo easier. The Cayenne doesn’t offer automatic folding seats.

Ergonomics

The AMG GLC 63 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 Cayenne doesn’t offer a remote starting system.

The AMG GLC 63 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. An easy entry system costs extra on the Cayenne.

If the windows are left open on the AMG GLC 63 Coupe the driver can close them all at the outside door handle or from a distance using the remote (remote must be aimed at door sensor). On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Cayenne can only operate the windows from inside the vehicle, with the ignition on.

Heated windshield washer nozzles are standard on the AMG GLC 63 Coupe to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Cayenne doesn’t offer heated windshield washer nozzles.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the AMG GLC 63 Coupe has standard extendable sun visors. The Cayenne doesn’t offer extendable visors.

The AMG GLC 63 Coupe has a 115-volt a/c outlet, 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.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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