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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 BMW M4 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 M4 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 M4’s airbags don’t have smart features and will always deploy full force.
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 M4 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 M4 doesn’t offer a driver alert monitor.
Both the AMG C 63 Coupe and the M4 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, crash mitigating brakes, daytime running lights, rearview cameras, available lane departure warning systems and around view monitors.
There are over 10 percent more Mercedes dealers than there are BMW dealers, which makes it easier should you ever need service under the AMG C 63 Coupe’s warranty.
The AMG C 63 Coupe’s standard 4.0 turbo V8 produces 44 more horsepower (469 vs. 425) and 73 lbs.-ft. more torque (479 vs. 406) than the M4’s standard 3.0 turbo 6 cyl. The AMG C 63 Coupe’s 4.0 turbo V8 produces 25 more horsepower (469 vs. 444) and 73 lbs.-ft. more torque (479 vs. 406) than the M4’s optional 3.0 turbo 6 cyl. The AMG C 63 S Coupe’s standard 4.0 turbo V8 produces 59 more horsepower (503 vs. 444) and 110 lbs.-ft. more torque (516 vs. 406) than the M4’s optional 3.0 turbo 6 cyl.
On the EPA test cycle the AMG C 63 Coupe gets better fuel mileage than the M4 Coupe Auto (17 city/26 hwy vs. 17 city/23 hwy).
The AMG C 63 Coupe has 1.6 gallons more fuel capacity than the M4 (17.4 vs. 15.8 gallons), for longer range between fill-ups.
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 BMW M4 (3). This means the AMG C 63 Coupe produces up to 16.5 pounds less smog-producing pollutants than the M4 every 15,000 miles.
The Mercedes AMG C 63 Coupe comes standard with an automatic transmission, for driver comfort, especially in the city. Automatic costs extra on the M4.
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 M4.
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 M4 doesn’t offer an up-shift light.
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 M4’s standard 40 series tires.
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 M4 doesn’t offer drift compensation steering.
For a smoother ride and more stable handling, the AMG C 63 Coupe’s wheelbase is 1.1 inches longer than on the M4 (111.8 inches vs. 110.7 inches).
For better handling and stability, the track (width between the wheels) on the AMG C 63 Coupe is 2.2 inches wider in the front than on the M4.
For better maneuverability, the AMG C 63 Coupe’s turning circle is 2.9 feet tighter than the M4’s (37.1 feet vs. 40 feet).
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 M4 doesn’t offer a power trunk, so its trunk has to be closed manually.
J.D. Power and Associates surveys of service recipients show that Mercedes service is better than BMW. J.D. Power ranks Mercedes 6th in service department satisfaction (above the industry average). With a 11% lower rating, BMW is ranked 8th.
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 M4 doesn’t offer a remote starting system.
Unlike the driver-only memory system in the M4, 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 M4 doesn’t offer an easy entry system.
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 M4 doesn’t offer extendable visors.
Optional air-conditioned seats in the AMG C 63 Coupe keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The M4 doesn’t offer air-conditioned seats.
The AMG C 63 Coupe has a standard center folding armrest for the rear passengers. A center armrest helps make rear passengers more comfortable. The M4 doesn’t offer a rear seat center armrest.
To keep a safe, consistent following distance, the AMG C 63 Coupe offers an optional Distronic Plus, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The M4 doesn’t offer an adaptive cruise control.
The Mercedes AMG C 63 comes in coupe, convertible and sedan bodystyles; the BMW M4 isn’t available as a sedan.
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