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By Colin Ryan
Updated January 30, 2025
The 2021 Mercedes-Benz C-Class has matured into a prestigious, elegant and advanced car. Among luxury compact cars, the C-Class has long been and still remains special, from the lowliest C 300 to the blistering C 63 S.
Available in sedan, coupe, and convertible body styles, the C-Class looks and feels like a smaller version of the flagship Mercedes-Benz S-Class range. But the C-Class has its own attributes that make it excellent for darting around town, yet still an attractive choice for driving from New York to Chicago or Los Angeles to San Francisco.
C-Class prices are generally higher than equivalents from primary rivals like the Audi A4/A5 and BMW 3 Series/4 Series. Newer competitors such as the Cadillac CT5 and Volvo S60 promise even greater value, while the Genesis G70 supplies thrilling dynamics at a bargain price. But Mercedes-Benz ownership has never been about the deal.
2021 Mercedes-Benz C-Class pricing starts at $26,750 for the C-Class C 300 Sedan 4D, which had a starting MSRP of $42,650 when new. The range-topping 2021 C-Class C 300 4MATIC Cabriolet 2D starts at $35,299 today, originally priced from $57,750.
Original MSRP | KBB Fair Purchase Price (national avg.) | |||
---|---|---|---|---|
$42,650 | $26,750 | |||
$44,650 | $28,356 | |||
$48,250 | $30,537 | |||
$50,250 | $32,500 | |||
$55,750 | $33,957 | |||
$57,750 | $35,299 |
The Kelley Blue Book Fair Purchase Price for any individual used vehicle can vary greatly according to mileage, condition, location, and other factors. The prices here reflect what buyers are currently paying for used 2021 Mercedes-Benz C-Class models in typical condition when purchasing from a dealership. These prices are updated weekly.
Which Model is Right for Me?
2021 Mercedes-Benz C 300
18-inch alloy wheels
Simulated leather upholstery
Heated front seats
Dual-zone automatic climate control
12.3-inch digital driver information display
10.25-inch infotainment display
Driver-monitoring system
2021 Mercedes-Benz C 300 AMG Line
AMG Line body styling with specific wheel design
Chrome diamond-block grille
Sport tuning for suspension, steering & brakes
Sport front seats
AMG Line interior design
2021 Mercedes-Benz C 300 Night Edition sedan
Black exterior accents
Black-finished 19-inch AMG alloy wheels
Simulated leather/simulated suede-covered AMG sport seats
Simulated leather/simulated suede-covered AMG steering wheel
Black, white or blue paint choices
2021 Mercedes-Benz C 300 Coupe
Burmester audio system
Satellite radio
64-color ambient cabin lighting
Automatic seat belt extender
Panoramic sunroof
2021 Mercedes-Benz C 300 Cabriolet
Power-folding fabric roof
Rollover protection
Aircap wind deflector
Airscarf neck warming
Semi-automatic trunk separator
2021 Mercedes-AMG C 43
Twin-turbocharged 3.0-liter V6
385 horsepower
Sport-tuned suspension
64-color ambient cabin lighting
Burmester surround-sound system
2021 Mercedes-AMG C 63
Hand-crafted twin-turbocharged 4.0-liter V8
469 horsepower
Performance exhaust system
Extended AMG driving modes
Electronic limited-slip differential
2021 Mercedes-AMG C 63 S
503 horsepower
Dynamic engine mounts
Adjustable 9-setting AMG traction control
Driving a Mercedes-Benz C 300 is similar to the larger and more expensive E-Class and S-Class siblings, but in a smaller and nimbler form.
Despite a stately and dignified exterior design, even the C 300 is willing to hustle, accelerating to 60 mph in just 6.2 seconds. Aside from being quick, this car is also stable and smooth. Drivers in Germany could cruise happily in the C 300 at 100 mph on the autobahn.
The 9-speed automatic transmission works well, and selectable driving modes offer Eco, Comfort, Sport, and Sport+ settings. Changing the modes alters the car’s character noticeably. In Sport mode, a C 300 feels much like a BMW 3 Series or 4 Series from behind the wheel.
Naturally, the C 300 Coupe feels slightly sportier than its sedan counterpart; the C 300 Cabriolet isn’t quite as rigid, but that’s inevitable when there isn’t a fixed metal roof.
The AMG C 43 versions hit a sweet spot of accessible power and handling prowess, showing how talented a C-Class can be. The C 63/63 S cars are phenomenal, rivaling enthusiast icons like the BMW M3 and M4. In any case, every 2021 C-Class is a proper German driving machine, enjoyable for commutes and road trips alike.
It could be argued that the inside of a 2021 C-Class is more even stylish than the outside, with an elegance rare in more expensive vehicles, let alone the main rivals.
Available with leather, wood, aluminum, and a variety of colors, the C-Class is easy to personalize. Once the ideal combination is chosen, the cabin will fit like a custom-tailored suit — a little snug, yet comfortable and flattering.
C-Class coupes and convertibles benefit from the Burmester system as standard as well as 64-color ambient cabin lighting. When the top of a C-Class cabriolet is dropped, a standard Aircap system prevents excessive turbulence in the cabin.
Curvy, bold, and arguably beautiful, every version of the C-Class looks like a scaled-down S-Class. The basic design is more than five years old, but still looks as fresh as it did in 2015.
Coupes and Cabriolets look similar to the sedan from the windshield forward, but adopt their own styling from the front doors back. Especially in the horizontal taillights that seem to blend into the trunk.
More expressive designs on larger alloy wheels give the C-Class greater presence. And the C 300’s AMG Line design package adds a chrome-studded grille that really makes the car stand out.
INTERIOR
The C-Class is undeniably pricey, but the interior makes it feel worth every penny. Especially when it’s loaded with supple leather, heated/ventilated front seats, and the cabin air ionization/fragrance system.
BURMESTER AUDIO
This German brand might be unfamiliar to American buyers, but once its high-quality sound is experienced, it’s unforgettable. Standard in the coupe and convertible, and a remarkably affordable option for the sedan, this upgrade is an aural delight. Even the stainless-steel speaker grilles please the senses.
Standard equipment highlights for all three C-Class body styles include LED headlights/taillights, 18-inch alloy wheels, keyless entry/ignition, rain-sensing wipers, driver attention monitoring, blind-spot monitoring, power-adjustable front seats, dual-zone automatic climate control, and hands-free trunk lid operation.
Infotainment systems bring a 10.25-inch infotainment display, Apple CarPlay/Android Auto smartphone integration, and a free 3-year subscription to Mercedes Me Connect services.
This year brings a 12.3-inch digital driver information display as standard across the board, along with heated front seats.
Coupes and Cabriolets have power-folding side mirrors, a Burmester surround-sound system, satellite radio with a free 6-month subscription, and 64-color ambient interior lighting with illuminated doorsills. The Cabriolet also has a power-folding fabric roof, special rollover protection, Airscarf neck-warming vents in the front seats, and a semi-automatic trunk separator.
Features like metallic paint, leather seats, and navigation are extra in the 2021 C-Class. Some driving-assistance and collision-avoidance technologies, which are standard in much less expensive vehicles are also on the options list.
The C-Class also offers AMG Line body and interior styling with sport-tuned performance components, various wheel designs, ventilated front seats, heated steering wheel, and fancier interior trim.
The sedan’s Premium Package adds ambient interior lighting, Burmester audio, satellite radio, panoramic glass sunroof, and 3-zone automatic climate control.
Each variant offers a Multimedia Package with navigation, Car-to-X communication, a head-up display, and wireless charging.
The 2021 C 300 variants have a turbocharged 2.0-liter 4-cylinder engine making 255 horsepower and 273 lb-ft of torque.
A 9-speed automatic transmission (with paddle shifters mounted beneath the steering wheel) sends drive to the rear wheels (RWD), unless the 4Matic all-wheel-drive (AWD) system is present. This system monitors driving style and traction continuously, optimizing power delivery to each wheel.
An automatic engine stop/restart system is standard. It helps to improve fuel economy, but can be disabled if desired. With rear-wheel drive or 4Matic all-wheel drive, the 2021 C 300 sedan is rated at 27 mpg combined.
AMG C 43 variants are propelled by a twin-turbocharged 3.0-liter V6 developing a highly agreeable 385 horsepower and have all-wheel drive as standard. C 63 and C 63 S models employ a hand-crafted, twin-turbocharged 4.0-liter V8 generating a mighty 469 horsepower or an even mightier 503 horsepower in the S, which goes just to the rear wheels.
2.0-liter turbocharged inline-4 (C 300)
255 horsepower @ 5,800-6,100 rpm
273 lb-ft of torque @ 1,800-4,000 rpm
EPA fuel economy (city/highway): 23/35 mpg (RWD sedan), 23/33 mpg (AWD sedan), 24/33 mpg (RWD coupe), 23/32 mpg (AWD coupe), 23/31 mpg (RWD cabriolet), 22/30 mpg (AWD cabriolet)
3.0-liter twin-turbocharged V6 (C 43)
385 horsepower @ 6,100 rpm
384 lb-ft of torque @ 2,500-5,000 rpm
EPA fuel economy (city/highway): 19/27 mpg (coupe and cabriolet), 18/27 mpg (sedan)
4.0-liter twin-turbocharged V8 (C 63/C 63 S)
469/503 horsepower @ 5,500-6,250 rpm
479 lb-ft of torque @ 1,750-4,500 rpm (C 63)
516 lb-ft of torque @ 2,000-4,500 rpm (C 63 S)
EPA fuel economy (city/highway): 17/26 mpg (sedan & coupe), 17/25 mpg (cabriolet)
Lease a new 2025 C 300 4MATIC Sedan for $539 a month for 36 months with $4,744 due at signing.
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Year | Vehicle Depreciation* | Resale Value | Trade-In Value | ||
---|---|---|---|---|---|
2022 | - | $42,666 | $37,010 | ||
2023 | $7,512 | $35,154 | $28,930 | ||
2024 | $5,753 | $29,401 | $23,414 | ||
Now | $4,906 | $24,495 | $18,617 |
Unlock Forecast
2-Year Forecasted Depreciation
*Depreciation for the last 12 months of the private party resale value.
Annual Depreciation is an estimation of what your vehicle's value might be over time based on an average of similar vehicles. Estimations are calculated by comparing Kelley Blue Book Private Party Values of vehicles similar to yours over time, as well as forecasts from Manheim Auction data comparing current and projected auction values against current Kelley Blue Book Private Party and Trade-In Values. This is not a guarantee of actual depreciation. Local weather conditions, market factors and driver performance will also impact your vehicle's actual depreciation.
Already Own This Car?
Curb Weight | 3605 lbs. | ||
---|---|---|---|
Fuel Capacity | 17.4 gallons | ||
Front Head Room | 38.8 inches | ||
Front Leg Room | 42.0 inches | ||
Max Seating Capacity | 4 | ||
Overall Length | 184.5 inches | ||
Front Shoulder Room | 54.8 inches | ||
Trunk or Cargo Capacity | 10.5 cu.ft. | ||
Turning Diameter | 36.8 feet | ||
Wheel Base | 111.8 inches | ||
Width with mirrors | 79.4 inches |
Adaptive Headlights | Available | ||
---|---|---|---|
Alloy Wheels | Available | ||
Moon Roof/Sun Roof | Available | ||
Number of Doors | 2 doors | ||
Panorama Moon Roof | Available | ||
Power Folding Exterior Mirrors | Available | ||
LED Headlights | Available | ||
Rear Spoiler | Available |
City | 24 mpg | ||
---|---|---|---|
Highway | 33 mpg | ||
Combined | 27 mpg |
Drivetrain | RWD | ||
---|---|---|---|
Transmission Type | Automatic | ||
9 speed | Available | ||
Recommended Fuel | Premium | ||
Parking Assist System | Available |
Horsepower | 255 @ 5800 RPM | ||
---|---|---|---|
Torque | 273 @ 1800 rpm | ||
Engine | 4-Cyl, Turbo, 2.0 Liter | ||
0 to 60 | 5.9 seconds | ||
Top Speed | 130 mph |
Basic | 4 years / 50000 miles | ||
---|---|---|---|
Powertrain | 4 years / 50000 miles | ||
Corrosion | 4 years / 50000 miles |
Pre-Safe
Standard in every C-Class, Pre-Safe determines when a collision is about to occur, preparing the cabin and occupants for impact by tightening the seatbelts, closing the windows and sunroof, and better positioning the front passenger seat for optimum impact protection.
Active Emergency Stop Assist
Part of the optional Driver Assistance Package, this technology works in conjunction with the active cruise control and lane-keeping assistance systems. It senses when a driver is no longer holding the steering wheel. If the driver fails to respond to requests to retake control, the system assumes the driver has fallen asleep or has suffered a medical emergency. It then begins to slow the car down, ultimately bringing it to a stop with the flashing hazard lights activated.
Evasive Steering Assist
Also part of the optional Driver Assistance Package, Evasive Steering Assist helps a driver retain control of the C-Class in situations where sudden evasive steering is necessary to avoid a pedestrian, animal, or another object.
Used 2021 Mercedes-Benz C-Class | Used 2021 BMW 4 Series | New 2024 Toyota GR86 | New 2025 Subaru BRZ | ||
---|---|---|---|---|---|
Price | $30,537 | $28,096 | $30,395 | $32,380 | |
KBB.com Rating | 4.7 | 4.1 | 4.3 | 4.4 | |
Consumer Rating | 4.4 | 5.0 | 3.9 | 3.2 | |
Fuel Economy | City 24/Hwy 33/Comb 27 MPG | City 26/Hwy 34/Comb 29 MPG | City 20/Hwy 27/Comb 22 MPG | City 20/Hwy 27/Comb 22 MPG | |
Fuel Type | Gas | Gas | Gas | Gas | |
5 Year Cost To Own 5-Year Cost to Own includes out of pocket expenses like fuel and insurance, plus the car’s loss in value over time (depreciation). | N/A | N/A | $60,561 | N/A | |
Seating Capacity | 4 | 4 | 4 | 4 | |
Basic Warranty | 4 years or 50000 miles | 4 years or 50000 miles | 3 years or 36000 miles | 3 years or 36000 miles | |
Horsepower | 255 @ 5800 RPM | 255 @ 6500 RPM | 228 @ 7000 RPM | 228 @ 7000 RPM | |
Engine | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, 2.4 Liter | 4-Cyl, 2.4 Liter | |
Drivetrain | RWD | RWD | RWD | RWD |
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Yes, the 2021 Mercedes-Benz C-Class is a good car, as reflected by its above-average Kelley Blue Book rating of 4.7 out of 5.
2021 Mercedes-Benz C-Class city/highway fuel economy ratings range from 22/30 mpg to 23/35 mpg, depending on trim and equipment.
Used 2021 Mercedes-Benz C-Class prices currently range from $30,537 for the C 300 Sedan 4D to $35,299 for the C 300 4MATIC Cabriolet 2D when purchasing from a dealership, depending on a range of factors like equipment, mileage, and condition.
The cheapest 2021 Mercedes-Benz C-Class is the C 300 Sedan 4D, with a Kelley Blue Book Fair Purchase Price of $30,537.
The 2021 Mercedes-Benz C-Class is part of the 4th-generation C-Class, which our owners give an above-average reliability rating of 4.3 out of 5.