The C300 Sport is a capable car and was more competitively priced than the 2001-2007 model it replaces. Quick and refined, braking performance is excellent, but the steering is overly light and feels out of place in a sport sedan. The taut suspension translates into a stiffer ride than many competing models.
Alerts
There are 6 recalls on this vehicle. Learn More.

Road Test Results

Performance
Acceleration Acceleration Acceleration tests are conducted on a smooth, flat pavement straightaway at the track. Time, speed, and distance measurements are taken with a precise GPS-based device that’s hooked to a data-logging computer.
0 to 60 mph 0 to 60 mph (sec.) The time in seconds that a vehicle takes to reach 60 mph from a standstill with the engine idling.
Transmission Transmission Transmission performance is determined by shifting smoothness, response, shifter action, and clutch actuation for manual transmissions.
Fuel Economy Fuel Economy We perform our own fuel-economy tests, independent of the government's often-quoted EPA figures and the manufacturers' claims. Using a precise fuel-flow measuring device spliced into the fuel line, we run two separate circuits to represent city and highway consumption.
CR's Overall Mileage CR's Overall Mileage CR's overall mileage is a composite of measured fuel usage on a prescribed city course and highway cruising; and CR's 150-mile test trip of mixed driving, if tested. In recent road tests, we've discontinued the 150-mile trip test.
CR's City Mileage CR's City Mileage Measured fuel usage on a prescribed city course.
CR's Highway Mileage CR's Highway Mileage Measured fuel usage on a prescribed highway cruising.
Annual Fuel Cost Annual Fuel Cost The cost and amount of fuel used in 12,000 miles and is calculated from CR's overall mileage.
Braking Braking The braking rating is a composite of wet and dry stopping distances and pedal feel. Braking distance is from 60 mph, with no wheels locked.
Emergency Handling Emergency Handling Several factors go into the rating, including the avoidance maneuver speed and confidence, as well as how the vehicle behaves when pushed to its limit,
Comfort / Convenience
Ride Ride Our expert judgment of how well the suspension isolates and absorbs road imperfections and how steady it keeps the body on various road surfaces.
Noise Noise Our expert judgment of the vehicle's interior noise level in everyday driving.
Front Seat Comfort Front Seat Comfort Our judgment of how comfortable the front seat is for drivers of various heights.
Rear Seat Comfort Rear Seat Comfort Our judgment of how comfortable the rear seat is for two passengers to sit across.
Interior Fit and Finish Interior Fit and Finish An expert evaluation of the interior quality and craftsmanship.
Trunk/Cargo Area Trunk/Cargo Area Our rating is based on the amount of luggage or cargo space that a vehicle has in the trunk or cargo area.

Owner Reports

Worse Better
Reliability History Reliability History The reliability charts are based on responses on hundreds of thousands of vehicles from our latest Annual Auto Survey. Consumer Reports subscribers reported on any serious problems they had with their vehicles during the past 12 months that they considered serious because of cost, failure, safety, or downtime, in any of the trouble spots included in the table below. The results are presented relative to the average model that year. Extra weight is given to the more serious areas such as major engine or transmission problems. Based on this data and further analysis, we predict reliability for the latest year. N/A indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.
2000
NA
2001
NA
2002
NA
2003
NA
2004
NA
2005
NA
2006
NA
2007
NA
2008
2009
NA
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Reliability Trouble Spots
Engine Major Engine Major Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.
NA
Engine Minor Engine Minor Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, oil leaks.
NA
Engine Cooling Engine Cooling Radiator, cooling fan, antifreeze leaks, water pump, thermostat, overheating.
NA
Transmission Major Transmission Major Transmission rebuild or replacement, torque converter, clutch replacement.
NA
Owner Satisfaction Owner Satisfaction To learn about satisfaction, CR has collected survey data from our annual survey on more than half a million vehicles. Our subscribers provide great insights into their satisfaction by answering one simple question: If they had it to do all over again, would they definitely buy or lease the same model? In addition, respondents also rate their cars in six categories: driving experience, comfort, value, styling, audio, and climate systems. N/A indicates that we did not receive a large enough sample size to provide data for a specific year. An X indicates that the vehicle was not manufactured for a specific year.
2000
NA
2001
NA
2002
2003
NA
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
Driving Experience Driving Experience Includes acceleration and handling
Comfort Comfort Includes seats, climate control, noise, and ride
Value Value Did you get what you wanted relative to the price you paid?
Styling Styling How it looks inside and out
Safety Equipment
ABS and front side air bags standard. Rear side air bags standard from 2001-2007. Head protection air bags standard from 2001. ESC standard from 2000.
Road Test

The C300 Sport is a capable car and was more competitively priced than the 2001-2007 model it replaces. Quick and refined, braking performance is excellent, but the steering is overly light and feels out of place in a sport sedan. The taut suspension translates into a stiffer ride than many competing models. We also tested the base C250, powered by an exceptionally smooth, 201-hp, turbocharged four-cylinder engine that was new for 2012. It serves up ample power, but its average fuel use of 24 mpg is not exactly stellar. We liked the steady, supple ride and agile handling in the Luxury trim we tested. It was more comfortable riding and about as agile as the Sport version of the six-cylinder C300. For both versions, the cabin remains snug, but it's quiet with supportive seats. The controls are better than those on most Mercedes, yet some are not logical to use.

Seating
2 front, 3 rear
Drive Wheels
AWD , Rear
Warranty

In most cases, automotive warranties are based on the vehicle identification number (VIN), and the warranty will be valid regardless of ownership. The dealership can tell you exactly how much warranty is left.

Read more about extended warranties
Body Styles
sedan
Transmissions Available
  • 7-speed Automatic
  • 6-speed Manual
Engines Available
  • 3-liter V6 (228 hp)
  • 3.5-liter V6 (268 hp)
  • 6.3-liter V8 (451 hp)

Owner Reported Trouble Spots

The Reliability score is based on our latest subscriber survey of 2011 Mercedes-Benz C-Class owners. The owner comments describe problems respondents experienced with this vehicle.

Electric System

Alternator, starter, hybrid battery and related systems, regular battery, battery cables, engine harness, coil, ignition switch, electronic ignition, distributor or rotor failure, spark plugs and wires failure.

What Owners Say

"Low beam lighting is problematic. Auto leveler may not be functioning appropriately"

Anonymous, CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"After replacing the bulbs, the direction of the beams are all screwy"

Jonathan W., CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Replacement in less than 3-4 months even using original"

Esteban A., PR (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Washer fluid would not work, appeared to be clogged. Had to have the system replaced"

Anonymous, WV (2011 Mercedes-Benz C-Class C300 3.0-L V6)
Exterior lights (other than headlights)

"Rear light had problem, had to replace. Then I got a recall notice, after work had been done"

Anonymous, CA (2011 Mercedes-Benz C-Class C350 3.0-L V6)

"Front parking lights have had repeated wiring and bulb failures. Warning messages advise of the problem(s). Repeated service appointments to correct problems are annoying"

Anonymous, NC (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Recall for tail light Repaired at dealer"

Anonymous, GA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Tail light brake light may not work dealer replaced tail light assbley"

Anonymous, WA (2011 Mercedes-Benz C-Class C300 Unsure)

"Recall regarding rear lamps"

Anonymous, FL (2011 Mercedes-Benz C-Class C300 Unsure)

"Factory re-call on tail light issue"

Anonymous, CA (2011 Mercedes-Benz C-Class C300 Unsure)
Keyless entry

"Do not last for more than 60 days. I have to buy more than 5 or 6 batteries a year"

Esteban A., PR (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Tire pressure frequently shows low pressure, not sure if this is a glitch or if pressure is indeed low as my husband checks this"

Anonymous, FL (2011 Mercedes-Benz C-Class C300 Unsure)

Body Integrity

Squeaks, rattles, wind noises, loose or cracked seals and/or weather-stripping, air and water leaks.

What Owners Say

Squeaks or rattles

"Poor sound proofing. Road noise excessive for "premium car". Also tympanic drum noise that persists despite 3 visits to dealer"

Anonymous, TN (2011 Mercedes-Benz C-Class C350 3.5-L V6)

"There has been a le in the A pillar. We've taken it in four times and its yet to be fixed"

Jonathan W., CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

"Rattling from sunroof mechanism, replaced under warranty"

Ferdinand A., CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Power Equipment

Cruise control, clock, warning lights, body control module, keyless entry, wiper motor or washer, tire pressure monitor, interior or exterior lights, horn, gauges, 12V power plug, remote engine start, alarm or security system

What Owners Say

Alternator

"Had to be replaced"

Anonymous, OK (2011 Mercedes-Benz C-Class C300 3.0-L V6)
Engine harness

"The harness failed and I was barely able to drive the car to a nearby dealership where we bought the car. It took 2 weeks for them to accumulate the needed replacement parts, dismantle the engine accessories, and exchange the new harness for the fail"

John H., WV (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Suspension

Shocks or struts, ball joints, tie rods, wheel bearings, alignment, steering linkage (includes rack and pinion), power steering (pumps and hoses, leaks), wheel balance, springs or torsion bars, bushings, electronic or air suspension.

What Owners Say

"REPLACED UNDER WARRANTY"

Anonymous, CA (2011 Mercedes-Benz C-Class C300 Unsure)

"Struts were bad and covered under the warranty"

Anonymous, TX (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Climate System

Blower (fan) motor, A/C compressor, condenser, evaporator, heater system, automatic climate control, refrigerant leakage, electrical failure.

What Owners Say

A/C compressor

"A/C Compressor Exploded in Engine Hood. Did not damage other parts. Under CPO Warranty"

Alexander D., FL (2011 Mercedes-Benz C-Class C300 3.0-L V6)
Automatic climate control

"The flaps for the defrost failed"

Melanie D., NJ (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Brakes

Antilock system (ABS), parking brake, master cylinder, calipers, rotors, pulsation or vibration, squeaking, brake failure or wear.

What Owners Say

Regular brake failure

"squeaky/worn..normal wear"

Dennis D., ON (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Engine Minor

Accessory belts and pulleys, engine computer, engine mounts, engine knock or ping, oil leaks.

What Owners Say

Oil leaks

"When I took it in for maintenance, they discovered the leak and fixed it gratis"

Anonymous, PA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Engine Major

Engine rebuild or replacement, cylinder head, head gasket, turbo or supercharger, timing chain or timing belt.

What Owners Say

Timing belt or chain

"cost is expensive. $250 to change it"

Anonymous, CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

Engine Cooling

Radiator, cooling fan, antifreeze leaks, water pump, thermostat, overheating.

What Owners Say

Thermostat

"It cost $935 to change it. Maintence cost is high"

Anonymous, CA (2011 Mercedes-Benz C-Class C300 3.0-L V6)

In-car Electronics

CD or DVD players, radio, speakers, GPS, communication system (e.g., OnStar), display screen freezes or goes blank, phone pairing (e.g. Bluetooth), voice control commands, steering wheel controls, portable music device interface (e.g., iPod/MP3 player), backup or other camera/sensors.

What Owners Say

Speakers

"Left side cutting off at times"

Anonymous, CT (2011 Mercedes-Benz C-Class C300 Unsure)

Fuel System

Check engine light, sensors (includes O2 or oxygen sensor), emission control devices (includes EGR), engine computer, engine computer, fuel cap, fuel gauge/sender, fuel injection system, fuel pump, fuel leaks, stalling or hesitation.

Exhaust

Muffler, pipes, catalytic converter, exhaust manifold, leaks.

Body Hardware

Power or manual windows, locks and latches, tailgate, hatch or trunk, doors or sliding doors, mirrors, seat controls, safety belts, sunroof, convertible top.

Drive System

Driveshaft or axle, CV joint, differential, transfer case, 4WD/AWD components, driveline vibration, traction control, electronic stability control (ESC), electrical failure.

Transmission Minor

Gear selector or linkage, leaks, transmission computer, transmission sensor or solenoid, clutch adjustment, rough shifting, slipping transmission.

Paint/Trim

Paint (fading, chalking, cracking, or peeling), loose interior and exterior trim or moldings, rust.

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