The Ghibli offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The C63 Sedan doesn’t offer all-wheel drive.
Both the Ghibli and the C63 Sedan have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.
The Ghibli has 3.1 gallons more fuel capacity than the C63 Sedan (21.1 vs. 18 gallons), for longer range between fill-ups.
The Ghibli has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The C63 Sedan doesn’t offer a cap-less fueling system.
The Ghibli’s optional 285/30R21 rear tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the C63 Sedan’s optional 35 series tires.
For better ride, handling and brake cooling the Ghibli offers optional 21-inch wheels. The C63 Sedan’s largest wheels are only 19-inches.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the Ghibli can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The C63 Sedan doesn’t offer run-flat tires.
For a smoother ride and more stable handling, the Ghibli’s wheelbase is 6.2 inches longer than on the C63 Sedan (118 inches vs. 111.8 inches).
For better handling and stability, the track (width between the wheels) on the Ghibli is 1.1 inches wider in the front and 4.2 inches wider in the rear than on the C63 Sedan.
The Ghibli has 1.7 inches more front headroom, 2.5 inches more front shoulder room, 1.7 inches more rear headroom and 1.5 inches more rear shoulder room than the C63 Sedan.
The Ghibli has a much larger trunk than the C63 Sedan (17.6 vs. 12.6 cubic feet).
The Ghibli offers a 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 C63 Sedan doesn’t offer a remote starting system.
The Ghibli’s instruments include an oil pressure gauge and a temperature gauge – which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The C63 Sedan has neither an oil pressure gauge nor a temperature gauge.
Heated windshield washer nozzles are standard on the Ghibli to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The C63 Sedan doesn’t offer heated windshield washer nozzles.
Both the Ghibli and the C63 Sedan offer available heated front seats. The Ghibli also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the C63 Sedan.
The Ghibli’s optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The C63 Sedan doesn’t offer air conditioned front seats.
On extremely cold Winter days, the Ghibli’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The C63 Sedan doesn’t offer a heated steering wheel.