2019 Mercedes AMG C 63 Coupe vs. 2019 Porsche 911

Detailed Review, Specifications & Comparison

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Safety

For enhanced safety, the front and rear seat shoulder belts of the Mercedes AMG C 63 Coupe 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 Porsche 911 doesn’t offer pretensioners for the rear seat belts.

The AMG C 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 911 doesn’t offer pre-crash pretensioners.

Using vehicle speed sensors, smart airbags in the AMG C 63 Coupe deploy with different levels of force or don’t deploy at all to help better protect passengers of all sizes in different collisions. The AMG C 63 Coupe’s side airbags will shut off if a child is leaning against the door. The 911’s airbags don’t have smart features and will always deploy full force.

The AMG C 63 Coupe’s optional 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. The 911 doesn’t offer a lane departure warning system.

The AMG C 63 Coupe offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The 911 only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

To help make backing safer, the AMG C 63 Coupe’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The 911 doesn’t offer a cross-path warning system.

The AMG C 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 911 doesn’t offer a driver alert monitor.

Both the AMG C 63 Coupe and the 911 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.

The Mercedes AMG C 63 Coupe weighs 427 to 1018 pounds more than the Porsche 911. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

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 C 63 Coupe’s warranty.

Engine

The AMG C 63 Coupe has more powerful engines than the 911:

 

Horsepower

Torque

AMG C 63 Coupe 4.0 turbo V8

469 HP

479 lbs.-ft.

AMG C 63 S Coupe 4.0 turbo V8

503 HP

516 lbs.-ft.

911 3.0 turbo 6 cyl.

370 HP

331 lbs.-ft.

911 S 3.0 turbo 6 cyl.

420 HP

368 lbs.-ft.

911 GTS 3.0 turbo 6 cyl.

450 HP

405 lbs.-ft.

911 GT3 4.0 DOHC 6 cyl.

500 HP

339 lbs.-ft.

911 GT3 RS 4.0 DOHC 6 cyl.

520 HP

346 lbs.-ft.

Environmental Friendliness

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes AMG C 63 Coupe higher (5 out of 10) than the Porsche 911 (1). This means the AMG C 63 Coupe produces up to 39 pounds less smog-producing pollutants than the 911 every 15,000 miles.

Transmission

The Mercedes AMG C 63 Coupe comes standard with an automatic transmission, for driver comfort, especially in the city. Automatic costs extra on the 911.

A nine-speed automatic (SMG) is standard on the Mercedes AMG C 63 Coupe, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the 911.

To facilitate fast shifting and allow the driver to focus on the road, the AMG C 63 Coupe has a standard up-shift light to indicate when the engine is approaching redline. The 911 doesn’t offer an up-shift light.

Brakes and Stopping

For better stopping power the AMG C 63 Coupe’s standard brake rotors are larger than those on the 911:

 

AMG C 63

911

Front Rotors

14.2 inches

13 inches

Rear Rotors

14.2 inches

13 inches

Tires and Wheels

For better traction, the AMG C 63 Coupe has larger front standard tires than the 911 (245/35R19 vs. 235/40R19).

Suspension and Handling

The AMG C 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 911 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG C 63 Coupe’s wheelbase is 15.3 inches longer than on the 911 (111.8 inches vs. 96.5 inches).

For better handling and stability, the track (width between the wheels) on the AMG C 63 Coupe is 3.3 inches wider in the front and 1.5 inches wider in the rear than the average track on the 911.

Passenger Space

Because it has more passenger and cargo room, the EPA rates the AMG C 63 Coupe a Subcompact car, while the 911 Coupe is rated a Minicompact.

The AMG C 63 Coupe has 9.3 cubic feet more passenger volume than the 911 Coupe (79.3 vs. 70).

The AMG C 63 Coupe has .8 inches more front headroom, 4 inches more front shoulder room, 4.6 inches more rear headroom, 7 inches more rear legroom and 3.4 inches more rear shoulder room than the 911 Coupe.

Cargo Capacity

The AMG C 63 Coupe has a much larger trunk than the 911 Coupe with its rear seat up (10.5 vs. 5.1 cubic feet). The AMG C 63 Coupe has a much larger trunk with its rear seat folded than the 911 Coupe with its rear seat folded (10.5 vs. 9.1 cubic feet).

With its coupe body style, valet key, locking rear seatbacks and remote trunk release lockout, the AMG C 63 offers cargo security. The 911’s non-lockable folding seat and non-lockable remote release defeat cargo security.

To make loading groceries and cargo easier when your hands are full, the AMG C 63 Coupe’s trunk can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The 911 doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Ergonomics

The AMG C 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 911 doesn’t offer a remote starting system.

Unlike the driver-only memory system optional at extra cost in the 911, the AMG C 63 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 AMG C 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 911.

The AMG C 63 Coupe offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The 911 doesn’t offer a heads-up display.

If the windows are left open on the AMG C 63 Coupe the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the 911 can only operate the windows from inside the vehicle, with the ignition on.

Keyless-Go standard on the AMG C 63 Coupe allows you to unlock the driver’s door, trunk and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Porsche 911’s available Porsche Entry and Drive doesn’t unlock the trunk.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the AMG C 63 Coupe has standard extendable sun visors. The 911 doesn’t offer extendable visors.

For greater rear passenger comfort, the AMG C 63 Coupe has standard rear a/c vents to keep rear occupants more comfortable. The 911 doesn’t offer rear vents.

The AMG C 63 Coupe’s optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The 911 doesn’t offer an automated parking system.

Model Availability

The Mercedes AMG C 63 comes in coupe, convertible and sedan bodystyles; the Porsche 911 isn’t available as a sedan.

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

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