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To maximize occupant safety, the front and rear seat shoulder belts of the Mercedes C-Class Coupe have pretensioners to eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Toyota Supra doesn’t offer pretensioners.
The C-Class Coupe’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Supra doesn’t offer pre-crash pretensioners.
The C-Class Coupe offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Supra doesn’t offer all-wheel drive.
The C-Class Coupe offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The Supra 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.
Both the C-Class Coupe and the Supra 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, driver alert monitors, available lane departure warning systems and rear cross-path warning.
The C-Class Coupe comes with a full 4-year/50,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The Supra’s 3-year/36,000-mile basic warranty expires 1 year and 14,000 miles sooner.
The C-Class Coupe has 3.7 gallons more fuel capacity than the Supra (17.4 vs. 13.7 gallons), for longer range between fill-ups.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes C-Class Coupe higher (6 out of 10) than the Toyota Supra (3). This means the C-Class Coupe produces up to 23.4 pounds less smog-producing pollutants than the Supra every 15,000 miles.
A nine-speed automatic is standard on the Mercedes C-Class Coupe, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Supra.
All wheel drive, available in the C-Class Coupe, provides the best traction for acceleration in wet, dry, and icy conditions. In corners, all wheel drive allows both outside wheels to provide power, balancing the car. This allows for better handling. The Toyota Supra is not available with all wheel drive.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the C-Class Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Supra doesn’t offer run-flat tires.
The C-Class Coupe 300 has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the Supra, it requires you to depend on roadside assistance and your vehicle will have to be towed.
The C-Class 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 Supra doesn’t offer drift compensation steering.
For a smoother ride and more stable handling, the C-Class Coupe’s wheelbase is 14.6 inches longer than on the Supra (111.8 inches vs. 97.2 inches).
The C-Class Coupe has standard seating for 4 passengers; the Supra can only carry 2.
The C-Class Coupe has 28.3 cubic feet more passenger volume than the Supra (79.3 vs. 51).
The C-Class Coupe has .5 inches more front headroom and .4 inches more front shoulder room than the Supra.
The C-Class Coupe has a larger trunk than the Supra (10.5 vs. 10.2 cubic feet).
A low lift-over trunk design makes loading and unloading the C-Class Coupe easier. The C-Class Coupe’s trunk lift-over height is 25.3 inches, while the Supra’s liftover is 32.8 inches.
With its coupe body style, valet key, locking rear seatbacks and remote trunk release lockout, the C-Class offers cargo security. The Supra’s hatchback body style and non-lockable remote release defeat cargo security.
To make loading and unloading groceries and cargo easier when your hands are full, the C-Class Coupe’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Supra doesn’t offer a power or hands-free opening trunk.
J.D. Power and Associates surveys of service recipients show that Mercedes service is better than Toyota. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 30% lower rating, Toyota is ranked 14th.
Unlike the driver-only memory system in the Supra, the C-Class Coupe offers an optional 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 C-Class 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 Supra doesn’t offer an easy entry system.
Keyless-Go standard on the C-Class 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 Toyota Supra’s Smart Key System doesn’t unlock the trunk.
To help drivers see further while navigating curves, the C-Class Coupe offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Supra doesn’t offer cornering lights.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the C-Class Coupe has standard extendable sun visors. The Supra doesn’t offer extendable visors.
The C-Class Coupe’s sun-visors swivel front-to-side to block glare from the side windows. The Supra’s visors are fixed into the windshield header.
Optional air-conditioned seats in the C-Class Coupe keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The Supra doesn’t offer air-conditioned seats.
On extremely cold winter days, the C-Class Coupe’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Supra doesn’t offer a heated steering wheel.
The C-Class Coupe’s available GPS navigation system has a real-time traffic update feature that plots alternative routes to automatically bypass traffic problems. (Service not available in all areas.) The Supra’s available navigation system doesn’t offer real-time traffic updates.
The C-Class Coupe’s optional Active Parking Assist can parallel park or back into a parking spot by itself, stopping and changing direction automatically. The Supra doesn’t offer an automated parking system.
The Mercedes C-Class comes in coupe, convertible and sedan bodystyles; the Toyota Supra isn’t available as a convertible or sedan.
Consumer Reports® recommends the Mercedes C-Class Coupe, based on reliability, safety and performance.
The Mercedes C-Class outsold the Toyota Supra by over 38 to one during the 2019 model year.
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