Used 2021 Mercedes-Benz C-Class Consumer Reviews
Used C-Class for sale
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We have a limited number of reviews for the 2021 C-Class, so we've included reviews for other years of the C-Class since its last redesign.
Silver and Red Beauty
Joseph ATX, 10/27/2020
updated 11/25/2024
2020 Mercedes-Benz C-Class C 300 4MATIC 2dr Convertible AWD (2.0L 4cyl Turbo 9A)
35 of 35 people found this review helpful
I’ve had this car for over a year. I had to order the car to get silver with a red interior and top with the driver assist package. It’s a very comfortable car. I took a 4K mile road trip as soon as it arrived. On the road it got 32 to 33 mpg. The ride is smooth and the acceleration is good. The driver assist package has some nice features. I got it mainly for adaptive cruise control. Mercedes makes it hard to get and expensive - driver assist requires the navigation package. There have been no mechanical issues in the past year. One complaint is the trunk can only be opened with the key fob or a release inside the car. Another is the ventilated seats are not cooled. They only blow air through the seats that is the same temperature as the air in the car making it a useless feature on a warm day with the top down. Overall I am pleased with this car and plan to drive it many years. I've had the car just over 2 years. There has only been one problem beyond regular maintenance. When putting the top down the cover that closes over the top was not going all the down. The local dealer lubricated the parts associated with lowering the top. That fixed the problem. It has worked perfectly since. Insurance is expensive. Before buying the car I had read that was the case with the C class. It cost more to insure this car than the two cars we had before this one (228i convertible and Golf R). After two years I am still happy with the car and will continue to drive it for many years. Edmunds is asking for an update at 2 years and 9 months. The starter battery had to be replaced. We don't put a lot of miles on the car. Mercedes told us we should drive more. The problem with the cover over the top closing completely came back. This time Mercedes replaced various cables in the top and the top liner. It has worked well since. Both the battery and top repair were under warranty. After almost 3 years I still enjoy driving this car. Edmunds is asking for an update at almost 4 years of owning this car. There have been no problems during the last year. I am still very satisfied with the car. It's been 5 years and Edmunds is asking to update my review. I've had no problems with the car since the last review. It's a low mileage car at 29K miles so far. I am satisfied with the car. After 5 years I usually want something different but I don't feel that way about this car. I will keep it for several more years. It is still beautiful in silver and red.
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Love this car
Patti, 11/11/2020
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
18 of 18 people found this review helpful
This is my second c300 and I love this car. It’s not to big but has plenty of room for adults in the back seat. It has great, luxurious options, great acceleration, plenty of space and love that the back seats fold down when you need extra room
2021 Mercedes-Benz C-Class for sale near you
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Best of both worlds
Scott, 02/01/2021
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
49 of 53 people found this review helpful
I did some pretty extensive research in this class, including the 330i xdrive and A4. After taking each of them on extensive test drives, I decided on the C300 4MATIC with the AMG line. I was very close to taking a great deal on the 3 Series, but in my heart I knew I liked the Mercedes more. It's much smoother, better built, and has better technology. I felt like the 330i's ride was a little too busy for me. It always begged me to drive fast, which may have been great in my 20s, but now I'm "more mature" haha. The C300 gives me the luxury all the time and the sportiness when I want it. Give it a try, you won't be disappointed.
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Classy Mercedes-Benz
Bertha , 07/27/2020
2020 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
20 of 22 people found this review helpful
Smooth ride, many awesome features plus luxurious at the right price!
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First MB
Corey, 09/02/2022
updated 03/07/2024
2021 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
8 of 8 people found this review helpful
Test drove a 2021 BMW 330i RWD & the 2021 MB C300 RWD and immediately noticed the sport Vs luxury focus (BMW was sport oriented & the MB was more luxury oriented). Being that we desired a smoother ride & a quiet interior, we went with the MB C300 and are happy with the decision. It’s not the fastest small luxury sedan out there and for me that’s ok. The quality is top-notch. The doors close solidly and plastic components on the door panels do not rattle. The aluminum trim on the Burmester speaker grilles feels great to the touch. While the small finger-tip sized touch pads on the steering wheel feel a bit cheap, they do respond quickly to inputs so navigating gauge cluster menus or infotainment screen choices is quick and easy. I wish MB offered the infotainment screen with both controller + touch-screen (as did the BMW), but the controller wheel (or steering wheel touch pads) work fine. Fuel economy so far (18k miles) is averaging around 26mpg for combined city/highway. With a large fuel tank the range is most excellent. Super pleased and really like the quality & quiet interior, great sound system and the fuel economy. The factory Continental tires are wearing normally but are loud - it’s the only noise we hear on the highway (no wind noise).
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A lemon?
D. B., 04/02/2021
2020 Mercedes-Benz C-Class AMG C 43 4dr Sedan AWD (3.0L 6cyl Turbo 9A)
15 of 17 people found this review helpful
So far it looks like maybe we got a lemon. Like the performance and handling. But after just 7 months and 3,000 miles; one of the Mercedes Original tires went flat, and an electrical problem with the gear shift lever. Could not take the car out of the park mode. 2 trips back to the dealer already.
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Love the Benz Rocket!!
Joshua, 12/01/2020
2020 Mercedes-Benz C-Class AMG C 43 2dr Coupe AWD (3.0L 6cyl Turbo 9A)
5 of 5 people found this review helpful
Love the quality, comfort, style, craftsmanship. And the rocket powered twin turbo V6 is amazing!!! Surprisingly good gas mileage
Great car with a lot of flaws and issues
Ebad, 08/24/2021
2021 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
21 of 28 people found this review helpful
I bought a brand new C300 2021 in July 2021. Due to the shortage, I purchased the car while it was in transit. But it came with a lot of problems; According to the service people, the left-side computer was totally disconnected, plus the chrome trim at the back was not assembled properly. The MB service told me it's not covered by the warranty and that it's a $700 job. Long story short, I love the car but it's been a negative experience and big disappointment with Mercedes Benz. The conclusion I make after the experience seems to be that buyers should take an expert/mechanic to inspect the car accurately before buying. Otherwise, they might buy a flawed car for which Mercedes will not take responsibility after it's sold if it's not included in the warranty. Lesson learned; next time, if I choose to buy a Mercedes, I'll bring my mechanic.
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Luxury that kicks up dust
Emma, 03/06/2021
2021 Mercedes-Benz C-Class AMG C 43 4dr Sedan AWD (3.0L 6cyl Turbo 9A)
13 of 17 people found this review helpful
2021 AMG C43 Coupe, Silver/red interior with Night package Performance is outstanding! Handles tight around corners and it is so smooth you don’t feel you are zipping along at 75 mph. The first time I test drove it I felt like I slid into the seat like butter. The finery of interior materials is exceptional and the controls are advanced technically. A sedan that makes me feel at 50 like a soon-to-be retiree with the luxury and a guilty pleasured teenager occasionally stepping on the gas for people to eat my dust! Simply, impeccable!
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"Best" Mercedes to own
ASnow, 10/26/2022
2020 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
6 of 7 people found this review helpful
Would I recommend this vehicle, no. I was told that this was the "best" vehicle to own in the Mercedes-Benz line up and that has definitely failed to be accurate. After about 8 months of owning the vehicle, I stated to have engine turn over issues. I would click the start/stop button and it would sometimes turn over and sometimes fail to do so. I was told that by service advisors and the service manager that nothing could be done if it did not happen in the dealership service center or in front of them. Although I had video footage of what the vehicle was doing. At one point while making a left hand turn on a flashing yellow, the accelerator failed mid turn, causing me to almost cause an accident while making the turn in front of an on coming vehicle at 5 mph. Pedestrians thought that I was doing it on purpose. I pulled over, turned the vehicle off and then back on. The accelerator worked fine after that. I took it back in and was told that there was no recalls or complaints, so they could not do anything about it. On 10/20/2022, I was driving down the freeway, when I went to accelerate and at that moment the vehicle began to stutter/shake uncontrollably. After that, any time the accelerator was pressed it would shutter/shake. My vehicle was towed to a dealership. Come to find out, cylinder one was coding. They found out that the fuel injector was stuck open. According to the service advisor, that issue was causing a misfire. I was told that they replaced the fuel injector and the spark plug. According to the vehicle report I was given, 1 reman injector, 4 TS spring F In, 1 spark plug, and there was a core return (not sure what that means).
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C300 Cabrio
Hiram, 03/03/2020
2020 Mercedes-Benz C-Class C 300 2dr Convertible (2.0L 4cyl Turbo 9A)
5 of 6 people found this review helpful
Awesome performance for a 4 cylinder. Great technology and comfort options. White with saddle brown leather and dark brown soft top looks classy. The details and quality of the vehicle is great.
great car
Bill Aivalikles, 01/05/2021
2020 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
3 of 3 people found this review helpful
i have not purchased Mercedes for many years due to the Chrysler merger. I mainly purchased /leased BMWs. The car and the technology is credible. It handles well and is fast. I have no complaints.
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Great so far
Collins, 10/09/2022
updated 03/06/2023
2020 Mercedes-Benz C-Class AMG C 43 2dr Coupe AWD (3.0L 6cyl Turbo 9A)
3 of 3 people found this review helpful
We love this car! It’s very nicely trimmed inside and the acceleration is tremendous. This car will hug the turns. The stereo system is fantastic. UPDATE: I’ve had this car for 2 and it is amazing. The speed and handling characteristics are fantastic. The interior is very well laid and the leather is beautiful.
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My wife’s got game
Greg P, 01/10/2021
2021 Mercedes-Benz C-Class C 300 2dr Coupe (2.0L 4cyl Turbo 9A)
8 of 11 people found this review helpful
It’s a ver sporty car, good handling. All the amenities are at your fingertips
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Great with the AMG line package
Phil S, 05/25/2021
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
5 of 7 people found this review helpful
The AMG line package really transformed this car from mediocre to enjoyable! Best all-around vehicle in its class (I drove the A4 and 330i), considering the comfort, drive and looks.
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A letdown from the W204
ADW, 05/14/2021
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
15 of 25 people found this review helpful
I currently own a 2014 C300 4Matic, and it has been a fantastic car in almost every way. Last week I was given a 2021 loaner from the dealer while some maintenance was done on my car, and I have to say, it was a very mixed bag. I really, really hate the turbo 4 engine - it's noisy and seems gutless; I think they overly rely on the transmission to keep the driver in a reasonable power band, but the transmission seems to be over-thinking its mission, sometimes hanging onto revs way too long and clunking down gears without grace. The interior is, of course, very nice, and it all has a very Mercedes-like feeling until you start driving. I think it would be much easier to score this car higher if the price was more reasonable, though there is a lot of tech in the car. Ultimately, a 4 banger is a 4 banger, no matter how nice the packaging. My advice to used car shoppers: look long and hard at the 2012-2014 V6 C300 before you buy one of these. There are a lot of them around and they are built like tanks.
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Great car
Sam, 01/05/2020
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
6 of 9 people found this review helpful
This is our first Mercedes Benz. We love the new gas mileage, the features and the performance. Great quality
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My First Mercedes
Kar in Texas, 05/06/2020
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
2 of 2 people found this review helpful
Formerly drove Jaguar S and Lincoln MKZ...Really enjoying THIS 2020 C 300
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My wife Benz
DC, 11/19/2021
updated 06/10/2022
2020 Mercedes-Benz C-Class C 300 2dr Convertible (2.0L 4cyl Turbo 9A)
2 of 2 people found this review helpful
Fun car, responsive and quality built. We love the look and feel of Mercedes. Still a great car after 2 years & 10K miles.
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Bad suspension not comfortable
Louis, 07/04/2020
2020 Mercedes-Benz C-Class AMG C 63 S 4dr Sedan (4.0L 8cyl Turbo 9A)
15 of 28 people found this review helpful
This car feels as if you drive an army truck. The confort mode of the c43 sedan is the same at sport, the suspension is so stiff, beware. Not a car you want if you spend your days on the road
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Coarse engine and harsh AMG suspension
Andrew H, 05/17/2023
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
5 of 10 people found this review helpful
The car is gorgeous. I got it for my wife and she loves its looks over the BMW 3 series and Audi A4 which she thought looked too plain and masculine. It has a striking and sporty exterior, especially with the black roof and trim paired with white color. The tan interior is light and airy and classy. Wired CarPlay is meh but I can live with it. But my wife isn’t a car person and only had an old Honda before.. The C300 drivetrain and suspension are incredibly unrefined. The coarse 4 cylinder engine sounds like pebbles and sand in a cement mixer. The AMG suspension crashes on any road imperfection and makes the car feel like it’s going to shake apart and break. My wife drives it so slowly in it because she thinks she’s going to damage her lovely car driving on lousy LA streets with the suspension crashing on ruts and potholes. Unless you’re on a glass smooth road with the music playing loudly, this car is a terrible driving experience.
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Waste of money
Ali, 08/03/2022
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
4 of 9 people found this review helpful
There is too much plastic in this car. The interior was peeling off after a while. I am very disappointed and unhappy with this car. Before buying it, I read so many negative comments about it but I did not pay attention and now I realized that others were right about this car. Very unreliable piece of plastic.
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Good car
Bill, 05/05/2022
2020 Mercedes-Benz C-Class AMG C 43 2dr Coupe AWD (3.0L 6cyl Turbo 9A)
0 of 0 people found this review helpful
Had some problems but had warranty and dealer fixed everything.
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Awesome
Kaceymac1, 11/30/2022
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
Rides like a dream. Powerful but super comfortable and smooth.
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Driver’s choice
Tony from Coral Springs FL, 09/07/2023
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
Comfort, style, power, solid on the highway … had Mercedes’s for 20 years
It was worth the money!
G Banks, 09/03/2024
2020 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
I've had the MB since 2021 and I'm still happy with my purchase. The car has nice safety features, good handling, and gets alot of compliments from other drivers... after driving the car for 3 years with no issues. There was a battery problem. But i got it fixed for free under my warranty. and its been good. I def would recommend this vehicle if your looking. I just wish you didnt have to pay to use the Mercedes me app.
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Nice
Rose Del Valle Valrico, Fl , 01/24/2025
2020 Mercedes-Benz C-Class C 300 4dr Sedan (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
I enjoy my vehicle . It’s smaller (interior) (height) than previous autos owned but very nice. Gas mileage is median Maintenance I find expensive. Love all the “bells and whistles”
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Sharp car
Rich grossman, 06/22/2022
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
Car and sarasota dealer are awesome
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pretty
Emma Jason , 06/23/2022
2021 Mercedes-Benz C-Class C 300 2dr Coupe (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
the new c class is different, am sure you gonna love it, it is very comfortable, especially the 4matic is quite different. enjoy your choice.
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Awesome Vehicle!
CabrioletMe, 01/21/2023
2021 Mercedes-Benz C-Class C 300 2dr Convertible (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
We bought our vehicle Certified Pre Owned. We had never purchased a used car before but this one looked brand new and was loaded with everything and more ! It was only a year old and had been purchased new at the same dealership where we bought it. I love the marina blue top on the white sport package body! You cannot go wrong with a Mercedes-Benz C-Class. However, next year they plan to merge the C-Class and E-Class cabriolets to only sell 1 convertible model. We bought now because we did not want that bigger engine or price tag.
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Excellent except for transmission logic
Fazzster, 10/03/2024
2021 Mercedes-Benz C-Class C 300 4MATIC 4dr Sedan AWD (2.0L 4cyl Turbo 9A)
0 of 0 people found this review helpful
Purchased a CPO C300 4-Matic with AMG Line package. I love everything about it except the transmission. Why have a "Sport Plus" mode if you don't have transmission tuning to go along with it? It should hold the gears longer especially in manual mode using the paddle shifters. It's a shame because the handling is noteworthy and will certainly reward when you want to play. Otherwise the performance of the transmission is smooth and efficient when driving normally. In mixed driving MPG's are around 36. Highest was 39 and lowest has been 28. Purchased the car with 12k miles. I now have 17k and no issues thus far.
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