2021 Mercedes-Benz C-Class Convertible Review: Expected Prices, Release Date, MPG, And Performance

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John Bedrow 

Automotive Journalist

August 6, 2020  at 11:01 AM

The C-Class Convertible is one of the most affordable luxury convertible cars you can get today, and the Mercedes tag only adds to the value of its package. It is rather a more practical convertible, that comfortably seats 4 passengers with generous cargo space. The 2021 Mercedes-Benz C-Class Convertible is going to deliver the same comfort and luxury, with some minor upgrades in the interior and exterior over its outgoing model.

The Mercedes-Benz C-Class Convertible offers the same treatment as its sedan and coupe siblings with an added thrill of rolling back the roof. It is a car meant to be your daily driver rather than burn rubber like some of its AMG counterparts. Hence, it offers a versatile yet a luxury car experience with its exquisite interior and attractive exteriors. The C-Class Convertible has been around for quite some time which gives it an edge over some of its new rivals.

Porsche Boxster and the Ford Mustang Convertible are the prime rivals of the 2021 Mercedes-Benz C-Class Convertible. Both the rivals have fierce performance, but the C-Class gives more focus to luxury and has a sufficiently capable 2.0L turbo inline-4 motor. Do not get distracted by the power and torque figures though, this convertible would take you from 0-60 mph in just 4.6 seconds and wouldn’t let you down. Let’s find out more about the 2021 C-Class convertible, and see if will be offer anything revolutionary or evolutionary. 

What’s new with the 2021 Mercedes-Benz C-Class Convertible?

  • New dashboard with wooden inlays
  • Heated and ventilated front seats to be made standard
  • Upgraded MBUX user interface system
  • 12.1-inch infotainment screen 

What’s the expected price and release date of the 2021 Mercedes-Benz C-Class Convertible?

There’s no official announcement of the release date of the 2021 C-Class Convertible. It was expected to be released in Summer 2020, but the current pandemic has turned things around. 

The 2020 model had a starting price of about $53,950. As there are no major changes expected from the 2021 model, the price shouldn’t be much increased and stand close to this price tag.

What to expect under the hood of 2021 Mercedes-Benz C-Class Convertible?

Mercedes produces one of the most sophisticated engines around the world, that not only guarantees power but refinement too. This means that they are supremely quiet, have minimum vibrations but yet powerful to give you the thrill of an engaging driving. Hence, things are no different from the C-Class Convertible which offers quite a smooth and enjoyable driving experience. The 2021 model will offer the same engine options as the 2020 model, hence, maintaining the same performance quotient.

The C-Class Convertible offers three engine variants to choose from. A standard 2.0 L turbo four-cylinder that churns out 255 hp power and 273 lb-ft torque. Next is an AMG 43 3L V6 and the top-level AMG 63 4L V8 which will be reviewed separately. The first one promises efficiency, while the other two deliver more power and performance. Focusing on the 2.0L turbo for this review, it offers adequate grunt under the hood to rival its competitors. Mated to a 7-speed automatic gearbox, the car offers smooth shifts with paddle shifters. However, due to the weight of the car, some of the performance is blunted out and this C-Class does not offer the best-in-class performance. It is capable of doing the 0-60 mph sprint in 4.6 seconds which is quite good but slower than the Mustang Convertible.


2021 Mercedes C-Class Convertible (expected)

2020 Audi A5 Cabriolet

2020 Ford Mustang Convertible

2020 Porsche Boxster







2.0-liter turbo four-cylinder

2.0-liter turbocharged four-cylinder

5.0-liter V8

2.0-liter 4-cylinder


7-speed automatic

8-speed automatic

10-speed automatic

6-speed manual


255 hp @ 6,100 rpm

188 hp @ 5,500 rpm

460 hp @ 4,600 rpm

300 hp @ 6,500 rpm


273 lb ft @ 2,500 rpm

370 lb ft @ 1,800 rpm

420 lb ft @ 4,200 rpm

280 lb ft @ 1,950 rpm

0-60 MPH (seconds)




Quarter-Mile (seconds)





2020 Data used for reference

In spite of having a smaller engine, the Mercedes delivers some heavy power and torque figures and gives a tough competition to the Porsche and Audi A5. The acceleration is definitely impressive, and in fact better than the Boxster. Apart from this, Mercedes has one of the smoothest engines, giving you a better driving experience and comfort for the passengers.

The 2021 C-Class is expected to have the same engine variants, and there’s no problem with that as they are sufficiently powered with a smooth transmission system.

How does the 2021 Mercedes-Benz C-Class Convertible handle?

The Mercedes-Benz C-Class is well-known for its exceptional ride quality and handling. Luxury and comfort was the main objective of the engineers, and they make no compromise in delivering it. Though the regular S and C class sedans have better suspensions and handling, this convertible doesn’t stand too far and offers good handling with a sporty touch to it. The suspension is quite capable of absorbing most bumps and potholes with only the sharpest ones creeping into the cabin in the form of vibrations.

The steering feedback is rich and the car feels quite nimble while changing directions. It is quite fun to push in and out of corners with minimal body roll on offer. The braking performance is good as well and offers different setups depending upon the trim you choose. The higher trims surely have bigger and more performance-focused brakes, but the base variants aren’t bad and could be trusted upon on city roads. But if speed and tracks are your goals for this car, better go for the AMG C63 variant.

How many miles to the gallon will the 2021 Mercedes-Benz C-Class Convertible deliver?

Fuel economy is not one of the major concerns for the engineers at Mercedes-Benz, and it is often compromised over luxury and performance. In spite of this, C-Class Convertible promises to deliver 22/29/25 mpg figures on city/highway/combined, and these figures are far better than its rivals. This makes the C-Class a more practical Convertible, that has all the features, power, and style like the other Convertibles in the market. 


2021 Mercedes C-Class Convertible (expected)

2020 Audi A5 Cabriolet

2020 Ford Mustang Convertible

2020 Porsche Boxster

MPG (City)





MPG (Highway)





MPG (Combined)





Fuel Capacity (Gallons)





Range (City/Highway, in Miles)





*2020 figures used for reference.

This section is completely dominated by the Mercedes C-Class as you can see from the above mpg and range figures. It offers a bigger fuel tank that would be sufficient for a drive of at least 435 miles on a full tank. This would definitely make you miss those long and lazy fuel refill stops. The 2021 Convertible would have the same mpg figures as it remains mechanically unchanged.

What to expect from the 2021 Mercedes-Benz C-Class Convertible’s interior?

The C-Class Convertible has a more practical interior than most of the conventional Convertibles and offers a good cabin and cargo space. To give you an idea of this Convertible, it is somewhat based on a regular C-Class sedan. Of course, the rear seats would not be as comfortable as the sedan, but it would comfortably fit a small family of four persons. The seats are leather-covered, and high-quality upholstery is used at all accessible places having a soft touch to it. 

The seats are more comfortable for the front passengers, while the rear passengers have to compromise in the head and legroom for the shorter wheelbase. Front seat power adjustment, lumbar support, and heating are standard in all trims, while ventilation and massage seats are limited to the higher trims. The 2021 variant would have an upgraded dashboard having wood varnishing to it and some other small new elements. The infotainment screen stretched across the dashboard gives a sporty feel to it, and makes it stand out from its rivals.


2021 Mercedes C-Class Convertible (expected)

2020 Audi A5 Cabriolet

2020 Ford Mustang Convertible

2020 Porsche Boxster

Seating Capacity





Front Row (Head/Shoulder/Leg) (in.)





Rear Row (Head/Shoulder/Leg) (in.)





Cargo Capacity (cubic feet)





2020 Data used for reference

The C-Class offers good cabin space compared to the Mustang and Porsche. However, the cargo space is compromised due to a shorter wheelbase. The 2021 C-Class Convertible would offer similar cabin and cargo space, with some minor upholstery upgrades. If space is your price concern then the Porsche Boxter will keep you the happiest in this lot and offers 21 cubic feet of cargo space too.

2021 Mercedes-Benz C-Class Convertible: Infotainment and Connectivity

Some features that are offered as premium from other car manufacturers are rather standard for the Mercedes tagged vehicles. This is true for the Mercedez-Benz C-Class convertible as well which includes leather seats with power adjustability, heater, Airscarf neck-warmers, driver seat memory function, dual-zone climate control. To add to the quietness of the cabin, the Aircap system helps control the excess wind flow when the sunroof is closed, keeping the cabin super silent.

Talking about the infotainment system, Mercedes recently updated its user interface COMAND system by the new MBUX system in all its models. This would be seen in 2021 C-Class too. The base model gets a twin 7-inch display, having drivers digital display and infotainment controls. Opting for higher variants would give access to a bigger 12.1-inch display with better controls and user interface. All the standard entertainment features like Apple CarPlay, Android Auto, Bluetooth, satellite radio, etc are available and could be heard upon through the standard 13-speaker Burmester surround sound system. 2 USB ports are available as standard, while wireless charging would be optional.

Will there be any changes to the exterior of the 2021 Mercedes-Benz C-Class Convertible?

The classic look of the C-Class Convertible would be maintained in the 2021 model, and there are not many changes expected in the exterior. That should not be a problem for most of us as it still looks modern even after 5 years of its launch of the first model. The standard Mercedes grille is still something to look at, but the Panamericana grille available in the AMG variants would give it a more premium appearance. The LED headlights are still maintained with the same design and perfectly match with the front grille and logo, giving it a more muscular and aggressive look. Apart from this, LED daylights are available in five different colors that could be contrasted according to the paint choices. It gets a strong character line at the front with the bonnet getting three of them to enhance its appeal. Overall, the C-Class Convertible offers simple yet elegant looks that will be carried forward to the 2021 model.


2021 Mercedes C-Class Convertible (expected)

2020 Audi A5 Cabriolet

2020 Ford Mustang Convertible

2020 Porsche Boxster

Curb Weight (in.)





Length (in.)





Width (in.)





Height (inches)





Ground Clearance (in.)





Wheelbase (in.)





Track Width (in.) F/R





2020 Data used for reference

Mercedes has a comparatively lower weight, that directly affects its performance and braking. The ground clearance is not one of the best but acceptable. The 2021 model wouldn’t have any changes in these numbers, as there are no upgrades expected in the exterior. In terms of the road presence, the Mustang Convertible offers the best deal with its longest wheelbase and length.

Will the 2021 Mercedes-Benz C-Class Convertible be worth my time and money?

The C-Class Convertible is one of the most affordable convertibles available in the market with no compromise in luxury, speed, and style. It offers you most of the features as standard. The fuel efficiency of this Convertible is definitely one of the best amongst its rivals and completely justifies its worth. While 2021 Mercedes-Benz C-Class Convertible remains mechanically unchanged, it receives a new updated infotainment system and few other standard features which makes it definitely worth your investment and time.

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