Compare the2022 Porsche 911VS 2021 Mercedes C-Class Coupe

A passive infrared night vision system optional on the 911 helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The C-Class Coupe doesn’t offer a night vision system.

Both the 911 and the C-Class Coupe have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all wheel drive, crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

The 911’s corrosion warranty is 7 years longer than the C-Class Coupe’s (12 vs. 5 years).

J.D. Power and Associates’ 2021 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Porsche 15th in initial quality. With 30 more problems per 100 vehicles, Mercedes is ranked 25th.

J.D. Power and Associates’ 2021 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 36 more problems per 100 vehicles, Mercedes is ranked 15th.

From surveys of all its subscribers, Consumer Reports’ January 2021 Auto Issue reports that Porsche vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Porsche 11 places higher in reliability than Mercedes.

The 911’s standard 3.0 turbo 6-cylinder produces 124 more horsepower (379 vs. 255) and 58 lbs.-ft. more torque (331 vs. 273) than the C-Class Coupe’s 2.0 turbo 4-cylinder. The 911 S’ standard 3.0 turbo 6-cylinder produces 188 more horsepower (443 vs. 255) and 117 lbs.-ft. more torque (390 vs. 273) than the C-Class Coupe’s 2.0 turbo 4-cylinder. The 911 GTS’ standard 3.0 turbo 6-cylinder produces 218 more horsepower (473 vs. 255) and 147 lbs.-ft. more torque (420 vs. 273) than the C-Class Coupe’s 2.0 turbo 4-cylinder. The 911 GT3’s standard 4.0 DOHC 6-cylinder produces 247 more horsepower (502 vs. 255) and 73 lbs.-ft. more torque (346 vs. 273) than the C-Class Coupe’s 2.0 turbo 4-cylinder. The 911 Turbo S’ standard 3.7 turbo 6-cylinder produces 385 more horsepower (640 vs. 255) and 317 lbs.-ft. more torque (590 vs. 273) than the C-Class Coupe’s 2.0 turbo 4-cylinder.

The flat cylinder configuration of the boxer engine in the 911 lowers its center of gravity, enhancing handling stability. The C-Class Coupe doesn’t offer a boxer engine configuration.

The 911’s optional fuel tank has 6.3 gallons more fuel capacity than the C-Class Coupe (23.7 vs. 17.4 gallons).

The 911 offers a manual transmission for better acceleration, control and fuel economy. The C-Class Coupe doesn’t offer a manual transmission.

The 911 offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The C-Class Coupe doesn’t offer an SMG.

The 911’s optional launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The C-Class Coupe doesn’t offer launch control.

For better stopping power the 911 Turbo S’ brake rotors are larger than those on the C-Class Coupe:

The 911 offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The C-Class Coupe doesn’t offer ceramic brake rotors.

The 911 stops much shorter than the C-Class Coupe:

For better traction, the 911 has larger standard tires than the C-Class Coupe (F:235/40R19 & R:295/35R20 vs. F:225/45R18 & R:245/40R18). The 911 Turbo S/GT3’s tires are larger than the largest tires available on the C-Class Coupe (F:255/35R20 & R:315/30R21 vs. F:225/40R19 & R:255/35R19).

The 911’s standard 235/40R19 front and 295/35R20 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the C-Class Coupe’s standard 45 series front and 40 series rear tires. The 911’s optional 245/35R20 front and 305/30R21 rear tires have a lower 35 series front and 30 series rear profile than the C-Class Coupe’s optional 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the 911 has standard 19-inch front and 20-inch rear wheels. Smaller 18-inch wheels are standard on the C-Class Coupe. The 911’s optional 20-inch front and 21-inch rear wheels are larger than the 19-inch wheels optional on the C-Class Coupe.

The 911 (except Base/GT3) offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The C-Class Coupe doesn’t offer an active sway bar system.

The 911 has a standard driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The C-Class Coupe’s suspension doesn’t offer adjustable shock absorbers.

The 911 GT3 handles at 1.15 G’s, while the C 300 4MATIC pulls only .91 G’s of cornering force in a Motor Trend skidpad test.

The 911 GT3 executes Motor Trend’s “Figure Eight” maneuver 3.6 seconds quicker than the C 300 4MATIC (22.3 seconds @ .95 average G’s vs. 25.9 seconds @ .71 average G’s).

For better maneuverability, the 911 GT3’s turning circle is 2.7 feet tighter than the C 300’s (34.1 feet vs. 36.8 feet).

The Porsche 911 may be more efficient, handle and accelerate better because it weighs up to about 400 pounds less than the Mercedes C-Class Coupe.

The 911 is 6.6 inches shorter than the C-Class Coupe, making the 911 easier to handle, maneuver and park in tight spaces.

To almost totally eliminate engine vibration in the passenger area, the 911 Manual (except PDK) has an electronically controlled liquid-filled front engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The C-Class Coupe uses conventional solid rubber engine mounts.

The front grille of the 911 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The C-Class Coupe doesn’t offer active grille shutters.

J.D. Power and Associates surveys of service recipients show that Porsche service is better than Mercedes. J.D. Power ranks Porsche first in service department satisfaction. With a 32% lower rating, Mercedes is ranked 6th.

To improve rear visibility by keeping the rear window clear, the 911 (except Cabriolet/GT3) offers an optional rear wiper. The C-Class Coupe doesn’t offer a rear wiper.

The 911 has a standard center folding armrest for the rear passengers. A center armrest helps make rear passengers more comfortable and it can provide a boundary between children. The C-Class Coupe doesn’t offer a rear seat center armrest.

The 911 (except Manual/GT3)’s optional Active Parking Support can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. Remote ParkAssist will park and retrieve your car remotely: press a button and watch it park itself. This is ideal for tight locations. The C-Class Coupe’s automatic parking system does not offer parking by remote control.