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 8 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 2008 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

Body control module

"During ice storm, water leaked into drivers side floor.ESP light came on Drove car to dealer whom informed us after 3 days that it would cost $12000 to fix as the total electronics were compromised.Gave to Insurance company who totaled the car. Neve"

Arthur C., NJ (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Exterior lights (other than headlights)

"tail light failed. both replaced. eventually a recall item"

Anonymous, NY (2008 Mercedes-Benz C-Class C300)

"Rear brake and lamp replaced"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Malfunction in the taillight cluster. Was a wiring issue"

Anonymous, CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"rear tail light module failure twice-later recall"

Anonymous, PA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"A couple of lights, side marker and tail light keep blowing and need to be replaced"

Anonymous, MB (2008 Mercedes-Benz C-Class C300)

"If you held the turn signal leveer down to indicate a lane change for more than two seconds the turn signals and windshield wiper would stop working until you stopped the vehicle, turned off the engine and then restarted the engine"

Don L., CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Tail lights went out due to overseas route coming back into the US"

Peggy K., NV (2008 Mercedes-Benz C-Class 3.5-L V6)
Gauges

"command display burnt out"

Anonymous, PA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Headlights

"The lights had to be aligned"

Tom W., FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"when the headlights were on, in the manual mode not auto, the lights turned off by themselves on 3 separate occasions before I could get the switch repaired. The problem was the switch not the lights themselves"

Anonymous, NV (2008 Mercedes-Benz C-Class C300 3.5-L V6)

"Automatic headlights kept on going on and off. I could see that from the reflection on vehicles in front of me"

Anonymous, NC (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Horn

"Said it wasn't loud enough. But it was that way when I bought it. If I wasn't charged a fee, Id have it looked at"

Anonymous, IN (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Keyless entry

"It was actually the ignition switch. I turned the key and nothing happened. The dealer installed a new switch for $1500 with the tow included"

Tom W., FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Tire pressure monitor

"Alarm notice came on every 2 wks. Said it was normal in winter to do that. Low pressure. Bothersome to have to have it reset all the time. My mirrors outside was the equip. they could not or didn'twant to fix. So they didn't"

Anonymous, IN (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Warning lights

"Related to tail light issue. Instrument cluster seemed to report problems when there were none"

Anonymous, CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Wiper motor or washer

"this was addressed in the first comment as both issues were related"

Don L., CA (2008 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

Antilock system (ABS)

"Repeated electronic warnings that the ABS system was not operational. Dealer inspected and found no problems and that it was operational. They reset warnings, but warnings came back 4 times last year"

Anonymous, OR (2008 Mercedes-Benz C-Class C350 3.5-L V6)

"When the ABS fails, it is a very expensive fix. The least expensive recommendation is to try recoding the software, which costs between $200 - $300, but if that doesn't work (it didn't), it costs nearly $2K to replace, and the software then has to be recoded AGAIN. So I am saving up for that now because it won't pass inspection without it. Overall, anytime anything goes wrong with this car, the cost for parts is outrageous."

Idgy M., NH (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Calipers

"Front passenger side caliper froze"

Anonymous, CA (2008 Mercedes-Benz C-Class C350 3.0-L V6)
Master cylinder

"Took car in for service, heard hissing noise and dealer diagnosed"

Charles M., NC (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Brake line corrosion and failure"

James A., PA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Rotors

"Dealer needed to machine rotors smooth"

Jim L., HI (2008 Mercedes-Benz C-Class C300 3.5-L V6)

"Both rotors and brake pads were recently replaced after being down to 2mm. I don't recall if we ever had to replace them before. It not, it would seem that this would be normal for a nine year old car with 87K miles"

Anonymous, VT (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Rust/uneven wear on rotors, to some extent caused by infrequent driving"

Alfred Z., OH (2008 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

Accessory belts or pulleys

"tension pulley in the belt"

Anonymous, NJ (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Idler pulley bearing failure"

James A., PA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Engine computer

"ECM failed, car would not start"

Anonymous, CA (2008 Mercedes-Benz C-Class C350 3.5-L V6)
Oil leaks

"My mechanic found a small oil leak while checking the overall condition of the car before buying it. We used this to negotiate the price and I had this fixed the next week."

Richard B., MN (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"transfer case oil leak/vacuum pump(?). Got fixed at non-dealer for about half (~$500) of what the dealer would normally charge"

Anonymous, CA (2008 Mercedes-Benz C-Class C300)

"Cam vent cover leaked oil"

Anonymous, CT (2008 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

Display screen freezes up

"The in-dash screen sometimes doesn't open. It stopped working for a year, then opened magically, work for about two weeks, the wouldn't open again. A few weeks later it opened again and worked for a few days, but it no longer works. I also had problems with the control knob. Due to the cost of replacing it, I repaired it myself once the screening started working again. But now that the screen doesn't work, that doesn't matter much. It's also worth noting that some functions can only be accessed through the screen, like setting up the bluetooth, selecting discs, changing the time on the clock, etc."

Frank S., CA (2008 Mercedes-Benz C-Class C350 3.5-L V6)

"The display doesn't pop up. It's frozen/locked in the down position."

Frank S., CA (2008 Mercedes-Benz C-Class C350 3.5-L V6)
Display screen goes blank

"Display screen no longer works at all"

Anonymous, MA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Command screen went blank Command controller knob had to be replaced"

Anonymous, CA (2008 Mercedes-Benz C-Class C350 3.0-L V6)
In-dash navigation system (GPS)

"The rotary function of my COMAND knob stopped functioning. The other parts of it work (push button and side-to-side, up-down works). There are enough work-arounds to use the radio and other things, but the rotary function for the GPS is zoom in/out"

David B., CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Controller rotational controls stopped working"

Anonymous, AB (2008 Mercedes-Benz C-Class C300)

Body Integrity

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

What Owners Say

Air or water leaks

"Leak around sun roof caused water to accumulate on drivers side floor"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 6.3-L V8)

"Window washer tank leaked. Needed replacement"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Seals and/or weather-stripping

"Water streams into the passenger cabin around the A pillar when it rains. I cannot duplicate the issue so I have not been able to stop it."

Anonymous, CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Squeaks or rattles

"There is a squeak in the driver side dash. I cannot find the source and eliminate it."

Anonymous, CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"It sounded like metal on metal grinding"

Anonymous, VT (2008 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

"Had to replace"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Blower (fan) motor

"A/C and heater only worked intermittently. I needed to replace the heater motor but I believe it was replaced with a used one since the new motor is noisy"

Anonymous, MB (2008 Mercedes-Benz C-Class C300)

"The blower motor failed, meaning no A/C, heat, or windshield defroster. The unit had to be replaced. I don't remember the exact cost, but it was expensive"

Anonymous, VA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Heater system

"themistat"

James L., CT (2008 Mercedes-Benz C-Class C300 6.3-L V8)

Exhaust

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

What Owners Say

Other/unsure

"Command control knob broke and had to be replaced - very expensive"

Anonymous, MA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Knob at console stopped working, it didn't allow me to change between functions. They did fix it, without charging me"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.5-L V6)

"Recall"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"vehicle recall"

Matthew G., CA (2008 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

Springs or torsion bars

"Torsion bar worn out"

Anonymous, FL (2008 Mercedes-Benz C-Class C350 3.0-L V6)
Steering linkage (includes rack and pinion)

"High resistance to turning steering wheel developed in car, became unsafe to drive. Problem stumped M-B dealer for a good week, as multiple parts were replaced without success. All but $500+/- was reimbursed by factory, although car was out of warr"

Anonymous, CA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"The steering locked without a dash warning"

Anonymous, MD (2008 Mercedes-Benz C-Class C300)

Paint/Trim

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

What Owners Say

Loose exterior trim or moldings

"Trim at roof has coating that is pealing"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.5-L V6)
Paint (fading, chalking, cracking, or peeling)

"The knobs and buttons (steering wheel, doors, and information command center) are peeling very badly from exposure to the Georgia heat. The material is not durable to withstand 90 degree plus heat. Cracked armrests and seats. It's ashamed that Mercedes Benz is putting substandard material in their vehicles that cannot withstand 90 degree heat"

Anonymous, AE (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Rust

"Rust pimples appeared in the right rear wheel arch, at the 12:00 o'clock point of the arch"

Ted C., MN (2008 Mercedes-Benz C-Class C300 3.0-L V6)

Transmission Minor

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

What Owners Say

Transmission computer

"The transmission would go into safe mode and would shift normally"

Anonymous, MA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Transmission leaks

"Dealer said I needed a new torque converter at approx 55000 miles, independent mechanis added two quarts of trans fluid and fixed leaks for $3,000 less -- no problems since"

Anonymous, KS (2008 Mercedes-Benz C-Class C350)

"Transfer case developed a leak. Required two attempts by dealer to resolve the issue"

Anonymous, ON (2008 Mercedes-Benz C-Class C300 3.0-L V6)

Drive System

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

What Owners Say

4WD/AWD components

"indicated failure, repaired, no longer a problem"

Anonymous, MA (2008 Mercedes-Benz C-Class C300)
Stability control (ESC)

"The car completely stopped working and I could not get the car into neutral for towing. We had to make contact with a MERCEDES-BENZ mechanic. The ESC and electrical problem are well documented for this model. Once fixed, it becomes a great car."

Tom Y., PA (2008 Mercedes-Benz C-Class)
Transfer case

"Fluid leak"

Anonymous, PA (2008 Mercedes-Benz C-Class C300 3.5-L V6)

Transmission Major

Transmission rebuild or replacement, torque converter, clutch replacement.

What Owners Say

Transmission rebuild or replacement

"The dealer decided that the transmission was noisy and replaced it. I did not notice it myself"

Anonymous, ON (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"although done under warranty they replaced the transmission 1 part at a time,and, finally after about 3 months I got the car back.The dealer said it was mercede's policy"

Anonymous, ON (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"Transmission needed to be replaced and out of warranty. Just paid for labor and Mercedes wrote off the cost of the transmission to good will"

Anonymous, PA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

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.

What Owners Say

Sensors (includes O2 or oxygen sensor)

"O2 sensor had to be replaced. This car is not driven much and I have never before had to change this in any car I have ever had.,"

Anonymous, MA (2008 Mercedes-Benz C-Class C300 3.0-L V6)

"One of the oxygen sensors needed to be replaced"

Anonymous, MA (2008 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

Electronic ignition

"The electronic steering lock failed, making the car impossible to start. I learned this is a common problem for this car. Repair was extremely expensive, almost 5,000 dollars, and took about four days"

Anonymous, VA (2008 Mercedes-Benz C-Class C300 3.0-L V6)
Ignition switch

"Ignition module failed"

Anonymous, MD (2008 Mercedes-Benz C-Class C300 3.0-L V6)

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.

What Owners Say

Sunroof

"Motor works, but sunroof doesn't slide"

Anonymous, FL (2008 Mercedes-Benz C-Class C300 3.5-L V6)

Engine Cooling

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

What Owners Say

Water pump

"My mechanic found a slight leak in the water pump. We fixed it."

Richard B., MN (2008 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.

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