2019 Ford Mustang vs. 2019 Mercedes C-Class Cabriolet

Detailed Review, Specifications & Comparison

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Safety

Both the Mustang and the C-Class Cabriolet have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, rear parking sensors, rear cross-path warning and driver alert monitors.

Warranty

Ford’s powertrain warranty covers the Mustang 1 year and 10,000 miles longer than Mercedes covers the C-Class Cabriolet. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 5 years or 60,000 miles. Coverage on the C-Class Cabriolet ends after only 4 years or 50,000 miles.

There are almost 8 times as many Ford dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Mustang’s warranty.

Reliability

The Mustang has a standard “limp home system” to keep drivers from being stranded if most or all of the engine’s coolant is lost. The engine will run on only half of its cylinders at a time, reduce its power and light a warning lamp on the dashboard so the driver can get to a service station for repairs. The C-Class Cabriolet doesn’t offer a lost coolant limp home mode, so a coolant leak could strand you or seriously damage the car’s engine.

J.D. Power and Associates rated the Mustang first among midsize sporty cars in their 2018 Initial Quality Study. The C-Class Cabriolet isn’t in the top three in its category.

J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Ford vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Ford fifth in initial quality, above the industry average. With 11 more problems per 100 vehicles, Mercedes is ranked 14th.

Engine

The Mustang has more powerful engines than the C-Class Cabriolet:

 

Horsepower

Torque

Mustang 2.3 turbo 4 cyl.

310 HP

350 lbs.-ft.

Mustang GT 5.0 DOHC V8

460 HP

420 lbs.-ft.

Mustang BULLITT 5.0 DOHC V8

480 HP

420 lbs.-ft.

C 300 Cabriolet 2.0 turbo 4 cyl.

255 HP

273 lbs.-ft.

AMG C 43 Cabriolet 3.0 turbo V6

385 HP

384 lbs.-ft.

Fuel Economy and Range

To lower fuel costs and make buying fuel easier, the Ford Mustang uses regular unleaded gasoline (premium recommended for maximum performance). The C-Class Cabriolet requires premium, which can cost 20 to 55 cents more per gallon.

The Mustang 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 C-Class Cabriolet doesn’t offer a cap-less fueling system.

Transmission

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

A ten-speed automatic is available on the Ford Mustang, for better acceleration and lower engine speed on the highway. Only a nine-speed automatic is available for the C-Class Cabriolet.

The Mustang Manual’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 C-Class Cabriolet doesn’t offer launch control.

Brakes and Stopping

For better stopping power the Mustang GT’s brake rotors are larger than those on the C-Class Cabriolet:

 

Mustang GT

C-Class Cabriolet

AMG C 43 Cabriolet

Front Rotors

15 inches

13 inches

14.2 inches

Rear Rotors

13 inches

11.8 inches

12.6 inches

Tires and Wheels

For better traction, the Mustang has larger standard tires than the C-Class Cabriolet (235/55R17 vs. 225/45R18). The Mustang GT’s optional tires are larger than the largest tires available on the C-Class Cabriolet (305/30R19 vs. 225/45R18).

The Mustang GT’s optional tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the AMG C 43 Cabriolet’s optional 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the Mustang Premium offers optional 20-inch wheels. The C-Class Cabriolet’s largest wheels are only 19-inches.

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the Mustang is .1 inches wider in the front and 4 inches wider in the rear than the average track on the C-Class Cabriolet.

Chassis

The Ford Mustang may be more efficient, handle and accelerate better because it weighs about 300 pounds less than the Mercedes C-Class Cabriolet.

The Mustang uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The C-Class Cabriolet doesn’t offer active noise cancellation.

Cargo Capacity

The Mustang Convertible has a much larger trunk with its top down than the C-Class Cabriolet with its top down (11.4 vs. 7 cubic feet). The Mustang Convertible has a much larger trunk than the C-Class Cabriolet with its top up (11.4 vs. 8.8 cubic feet).

Ergonomics

The Mustang’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 C-Class Cabriolet does not have an oil pressure gauge.

Recommendations

J.D. Power and Associates rated the Mustang third among midsize sporty cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The C-Class Cabriolet isn’t in the top three.

The Mustang GT/Bullitt was chosen as one of Car and Driver’s “Top Ten” in 2019. The C-Class Cabriolet has never been a Car and Driver “Top Ten” pick.

The Ford Mustang outsold the Mercedes C-Class by 26% during 2018.

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

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