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For enhanced safety, the front and rear seat shoulder belts of the Mercedes C-Class Cabriolet 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 2 Series doesn’t offer pretensioners for the rear seat belts.
The C-Class Cabriolet’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 2 Series doesn’t offer pre-crash pretensioners.
The C-Class Cabriolet offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The 2 Series 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.
The C-Class Cabriolet’s blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The 2 Series doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing safer, the C-Class Cabriolet’s optional 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 2 Series doesn’t offer a cross-path warning system.
Both the C-Class Cabriolet and the 2 Series 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 all wheel drive and lane departure warning systems.
There are over 10 percent more Mercedes dealers than there are BMW dealers, which makes it easier should you ever need service under the C-Class Cabriolet’s warranty.
J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than BMW vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 8 more problems per 100 vehicles, BMW is ranked 20th.
The C-Class Cabriolet’s 2.0 turbo 4-cylinder produces 7 more horsepower (255 vs. 248) and 15 lbs.-ft. more torque (273 vs. 258) than the 230i’s standard 2.0 turbo 4-cylinder.
The C-Class Cabriolet has 3.7 gallons more fuel capacity than the 2 Series (17.4 vs. 13.7 gallons), for longer range between fill-ups.
A nine-speed automatic is standard on the Mercedes C-Class Cabriolet, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the 2 Series.
For better stopping power the C-Class Cabriolet’s brake rotors are larger than those standard on the 2 Series:
For better traction, the C-Class Cabriolet has larger tires than the 2 Series (F:225/45R18 & R:245/40R18 vs. 205/50R17).
The C-Class Cabriolet’s standard 225/45R18 front and 245/40R18 rear tires provide better handling because they have a lower 45 series front and 40 series rear profile (height to width ratio) that provides a stiffer sidewall than the 230i’s standard 50 series tires.
For better ride, handling and brake cooling the C-Class Cabriolet has standard 18-inch wheels. Smaller 17-inch wheels are standard on the 230i. The AMG C 43 Cabriolet’s optional 19-inch wheels are larger than the 18-inch wheels optional on the 2 Series.
The C-Class Cabriolet offers an optional 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 2 Series, it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.
The C-Class Cabriolet has standard front and rear stabilizer bars, which help keep the C-Class Cabriolet flat and controlled during cornering. The 2 Series’ suspension doesn’t offer a rear stabilizer bar.
The C-Class Cabriolet’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 2 Series doesn’t offer drift compensation steering.
For a smoother ride and more stable handling, the C-Class Cabriolet’s wheelbase is 5.9 inches longer than on the 2 Series (111.8 inches vs. 105.9 inches).
For better handling and stability, the average track (width between the wheels) on the C-Class Cabriolet is 1.7 inches wider in the front than the track on the 2 Series.
The front grille of the C-Class Cabriolet uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The 2 Series doesn’t offer active grille shutters.
The C-Class Cabriolet’s standard folding rear seats are split to accommodate bulky cargo. The 2 Series Convertible’s standard single piece folding rear seat is not as flexible; long cargo and a passenger can’t share the rear seat.
J.D. Power and Associates surveys of service recipients show that Mercedes service is better than BMW. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 23% lower rating, BMW is ranked 11th.
The C-Class Cabriolet 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 2 Series doesn’t offer a remote starting system.
Unlike the driver-only memory system in the 2 Series, the C-Class Cabriolet 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 Cabriolet’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. The 2 Series doesn’t offer an easy entry system.
The C-Class Cabriolet offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The 2 Series doesn’t offer a heads-up display.
The C-Class Cabriolet’s power parking brake sets with one touch and releases with one touch or automatically. The 2 Series has a lever-type parking brake that has to be strenuously raised to engage properly. It has to be lifted up more and a button depressed to release it.
The C-Class Cabriolet’s standard power windows have a locking feature to keep children in the rear seat from operating them, but the driver can still raise and lower all of them with the lock engaged. BMW does not offer a locking feature on the 2 Series’ standard power windows.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the C-Class Cabriolet has standard extendable sun visors. The 2 Series doesn’t offer extendable visors.
Optional air-conditioned seats in the C-Class Cabriolet keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The 2 Series doesn’t offer air-conditioned seats.
The C-Class Cabriolet’s optional Active Parking Assist can parallel park or back into a parking spot by itself, stopping and changing direction automatically. The 2 Series’ automatic parking system requires operating the brakes and transmission to safely park.
The Mercedes C-Class comes in coupe, convertible and sedan bodystyles; the BMW 2 Series isn’t available as a sedan.
Consumer Reports® recommends both the Mercedes C-Class Cabriolet and the BMW 2 Series, based on reliability, safety and performance.
The Mercedes C-Class outsold the BMW 2 Series by over seven to one during the 2019 model year.
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