2019 Mercedes AMG C 63 Coupe vs. 2019 Audi S5

Detailed Review, Specifications & Comparison

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Safety

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 S5’s airbags don’t have smart features and will always deploy full force.

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 S5 doesn’t offer a driver alert monitor.

Both the AMG C 63 Coupe and the S5 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, four-wheel antilock brakes, 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 26 percent more Mercedes dealers than there are Audi dealers, which makes it easier should you ever need service under the AMG C 63 Coupe’s warranty.

Reliability

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Mercedes 14th in initial quality, above the industry average. With 13 more problems per 100 vehicles, Audi is ranked 25th, below the industry average.

Engine

The AMG C 63 Coupe’s standard 4.0 turbo V8 produces 120 more horsepower (469 vs. 349) and 110 lbs.-ft. more torque (479 vs. 369) than the S5’s 3.0 turbo V6. The AMG C 63 S Coupe’s standard 4.0 turbo V8 produces 154 more horsepower (503 vs. 349) and 147 lbs.-ft. more torque (516 vs. 369) than the S5’s 3.0 turbo V6.

Fuel Economy and Range

The AMG C 63 Coupe has 2.1 gallons more fuel capacity than the S5 (17.4 vs. 15.3 gallons), for longer range between fill-ups.

Transmission

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 an eight-speed automatic is available for the S5.

The AMG C 63 Coupe 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 S5 doesn’t offer an SMG or a conventional manual transmission.

The AMG C 63 Coupe’s 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 S5 doesn’t offer launch control.

Brakes and Stopping

For better stopping power the AMG C 63 Coupe’s brake rotors are larger than those on the S5:

 

AMG C 63

AMG C 63 S

S5

Front Rotors

14.2 inches

15.8 inches

13.8 inches

Rear Rotors

14.2 inches

14.2 inches

13 inches

The AMG C 63 Coupe S 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 S5 doesn’t offer ceramic brake rotors.

Tires and Wheels

For better traction and acceleration, the AMG C 63 Coupe has larger standard rear tires than the S5 (265/35R19 vs. 245/40R18). The AMG C 63 Coupe’s rear tires are larger than the largest rear tires available on the S5 (285/35R18 vs. 265/30R20).

The AMG C 63 Coupe’s standard 285/35R18 rear tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the S5’s standard 40 series tires.

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 S5 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG C 63 Coupe’s wheelbase is 3 inches longer than on the S5 Coupe (111.8 inches vs. 108.8 inches).

For better handling and stability, the track (width between the wheels) on the AMG C 63 Coupe is 1.9 inches wider in the front and 1 inch wider in the rear than on the S5.

The AMG C 63 S Coupe handles at .98 G’s, while the S5 Prestige Coupe pulls only .94 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the AMG C 63 Coupe’s turning circle is .6 feet tighter than the S5’s (37.1 feet vs. 37.7 feet).

Passenger Space

The AMG C 63 Coupe has .7 inches more front legroom and 1 inch more rear shoulder room than the S5 Coupe.

Cargo Capacity

To make loading and unloading groceries and cargo easier, especially for short adults, the AMG C 63 Coupe has a standard power trunk, which opens and closes automatically by pressing a button or just by kicking your foot under the back bumper, completely leaving your hands free. The S5 doesn’t offer a power trunk, so its trunk has to be closed manually.

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 S5 doesn’t offer a remote starting system.

Unlike the driver-only memory system optional at extra cost in the S5, 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. The S5 doesn’t offer an easy entry system.

To help drivers see further while navigating curves, the AMG C 63 Coupe offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The S5 doesn’t offer cornering lights.

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

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