NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2008 Mercedes-Benz C-Class. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
The contact owns a 2008 Mercedes-Benz C300. The contact stated that while depressing the brake pedal, attempting to stop, the vehicle failed to respond as intended and causing the contact to drive through a stop sign, then merge onto the interstate independently. The driver's side rear tire was leaking brake fluid. The check brake system warning light illuminated. The vehicle was towed to a dealer, where it was diagnosed that the brake line was corroded. The vehicle was repaired under warranty for the subframe prior to the failure; however, the brake lines were not covered and needed replacement. The vehicle was then towed to an independent mechanic where the brake lines were pending replacement; however, the mechanic was waiting for parts. The manufacturer was notified of the failure and offered no assistance. The approximate failure mileage was 164,000.
Certified Mercedes dealership confirmed that the subframe of my 2008 C300 is rusted and needs to be replaced which is under warranty. However, they are unwilling and do not acknowledge that the brake lines are also rusted and need to be replaced which is CAUSED by the rusted subframe. I first consulted my local mechanic shop who specializes in Mercedes repairs, and he told me about the issues of the corroding subframe and the rested brake lines. He also mentioned that he has helped and directed many Mercedes owners to call Mercedes customer service to voice my concerns as well as confirm the warranty of the subframe.
The contact owns a 2008 Mercedes-Benz C300. The contact stated while at the car wash and attempting to wash the vehicle, there was popping sound coming from the vehicle, and the contact saw smoke coming from the speakers and called the Fire Department however, no damages were found. The vehicle was taken to the residence and an independent mechanic inspected the vehicle but found no issues with the vehicle. The trunk was opened, and the contact became aware of water inside the taillight housings. No warning light was illuminated. The vehicle was not taken to the dealer or an independent mechanic to be diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 180,000.
The contact owns a 2008 Mercedes-Benz C300. The contact stated while driving 45 MPH and depressing the accelerator pedal, the vehicle slowed down independently and lost automotive power. The contact stated that the vehicle remained in the intersection while awaiting tow services. The contact stated that her boyfriend and son helped to push the vehicle to the right side of the roadway. The contact smelled a burning odor but was unsure where the odor was coming from. No warning light was illuminated. The contact stated that an independent mechanic was contacted. The vehicle was towed to an independent mechanic where it was diagnosed that the ECU was damaged and needed to be replaced. The vehicle was repaired. The contact related the failure to NHTSA Campaign Number: 24V704000 (ENGINE AND ENGINE COOLING); however, the VIN was not included in the recall. The manufacturer was not notified of the failure. The approximate failure mileage was 110,000.
Odometer Fraud. The contact purchased a 2008 Mercedes Benz C300. The contact stated that while attempting to register the vehicle, it was discovered that there was a mileage discrepancy. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 125,985, and at the time of registration, it was discovered that the mileage was 128,917.
On [XXX] the car refused to start due to the electronic steering lock failure. The car was towed to the nearest Mercedes Benz Dealer at Stevens Creek Blvd, San Jose CA 95129. An inspection was done and Mercedes Benz wanted $3457.66 to replace the Steering Lock. This item is a recall item in other years of the C300 Mercedes Benz. Google shows: Mercedes-Benz has issued a recall for the Mercedes- Benz C-Class models, including the C300, due to potential steering lock issues. The recall specifically affects 2015- 2016 C300 models, as well as other C-Class variations like the 2017-2019 C300 Cabrio and Coupe. The recall is due to a potential problem with the Electronic Steering Lock (ESL) module, which is responsible for locking and unlocking the steering wheel. A faulty ESL module can prevent the steering wheel from unlocking, causing the vehicle to be unable to start. We feel that the recall should also apply to the C300 2008 model as it is exactly the same issue and completely incapacitates the car and is a danger to the public as involves the electronic steering. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2008 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the steering wheel failed to turn in the intended direction. The contact stated that a message to remove the ignition key was displayed. The vehicle was driven to the residence. The contact stated that later, while starting the vehicle, the vehicle failed to start as intended. In addition, the contact stated the steering wheel had seized. The contact inspected the battery and determined there was no failure with the battery. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The contact was requested to pay a diagnostic fee and declined. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to take the vehicle to the dealer for a diagnostic test. The failure mileage was approximately 90,000.
The contact owns a 2008 Mercedes-Benz C300. The contact stated that upon turning off the vehicle, there was an abnormal clicking sound coming from the vehicle. There was no warning light illuminated. The contact stated that the following day, the vehicle failed to start after several attempts and required a jumpstart. The contact replaced the battery; however, the failure persisted. The contact disconnected the battery to prevent the battery from draining. The dealer and the manufacturer were not yet notified of the failure. The vehicle was not repaired. The failure mileage was approximately 200,000.
The ESL system malfunction causes either steering lock or ignition switch to fail resulting in a failure to start the vehicle creating safety issues and a failure to reach safe destination. This problem is reported to be an extremely common issue in the Mercedes Benz W204 C-Class models.
ESL failed suddenly. This appears to be a common problem with C300 MB. As such it should be part and f a recall as the expense to replace is over $2000.
Camshaft adjuster solenoid leaked oil into wiring harness, caused vehicle to go into limp mode and not accelerate/shift gears. This is a known problem with the m272 engine, this vin did not show up on the recall list.
The contact owns a 2008 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the check engine warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed with an intake manifold failure. The contact was informed that the intake manifold needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 152,151.
The contact owned a 2008 Mercedes-Benz C300. The contact received notification of NHTSA Campaign Numbers: 16V081000 (Air Bags) and 16V363000 (Air Bags) and would like to be removed from the recall distribution list. The local dealer was not contacted. The manufacturer was contacted.
The contact owns a 2008 Mercedes-Benz C300. The contact stated after the vehicle was taken to the dealer for an unknown recall repair, the air bag warning light remained illuminated. The contact also became aware that the driver’s side headlight was inoperable. The vehicle was taken back to the dealer where it was diagnosed with a detached headlamp wiring harness. The dealer recommended that driver’s and passenger’s side headlamps be replaced. Additionally, the taillights remained illuminated after turning off the vehicle. The vehicle was not repaired. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.
My rear suspension, right lower control arm I believe it's called. Snapped out of the subframe do to corrosion . My hole rear subframe is getting worse, eating up by corrosion
The airbag headrests opened up randomly without being involved in an accident!
My car has a rotten rear subframe and has holes in it and the dealer doesn't want to repair it and Mercedes announced that it had a 20 year extended warranty. I'm from Manchester, New Hampshire. They inspected it and say they can't change it for free. The warranty doesn't cover it. I don't know what's going on. with that
Car worked fine, all the sudden it wouldn't turn over, I would put the key in and turn it and nothing would happen, I was stuck and had to catch a ride, lucky that I was able, a car company that is supposedly reliable shouldn't allow there cars to completely give out on people during the middle of winter storms and not take ownership, when the customer has taken good care of the car. Talked to several mechanics and turned out it was the Electronic Steering Lock (ESL) module that had malfunctioned probably due to the software and electrical. Due to this only the Benz dealerships can repair, I had to tow it to a dealership and was charged around $2000 after haggling over the price. Terrible experience and should be recalled by MB, I have seen many complaints about this online and was very disappointed there wasn't a cheaper solution. Was both a safety issue, inconvenient and very costly.
All of a sudden, the car would not start and inserting the key and turning doesn't do anything. Turns out that like many other folks, the Electronic Steering Lock module is faulty and preventing the car from starting. Found out that only the dealer can fix it and mercedes provides the replacement part. The cost is unaffordable at $2200 from the dealer and the part is back ordered and won't be available for approximately 2 months. This is completely unacceptable and mercedes should prioritize and fix this issue as a safety issue with a recall since it completely makes the car non-driveable and nobody but the dealer can fix this, which allows the dealer to charge any amount they like.
I honestly don’t know how Mercedes could have used such a cheap metal mix in their brake lines. Every single c300 made before 2012 is at extreme risk of brake failure every winter, the lines rust very easily and cause ruptures to happen as soon as you need to use your brakes in emergency. If you slam your foot on the brakes for a 2008-2009 Mercedes, you are putting your life at risk.
Brake Booster vacuum leak causing it to not brake properly. Requires more pedal pressure to come to a stop. Extremely dangerous
rear subframe corrodes and detaches from car. a class action lawsuit has been filed in georgia and california. this effects many mercedes models. dealer stated the lawsuit extends to 08 models as well.
Recalls need to be fixed.
My car had the Takata airbags that were recalled. It says the recalls were repaired but my vehicle is saying that the driver-side airbag has malfunctioned. I haven't been in any accidents. So I contacted Mercedes and they could not find verification that the previous open recalls were ever fixed.
Car has been in and out of the shop. Initially I have been contacting Mercedes about airbag messages and continued message of SRS Malfunction on dashboard. Airbags had been recalled and supposedly replaced on multiple occasions. This SRS continues to remain even after repair or being seen for this issue only for other components to have failed and me having to pay for those in the process. The SRS Malfunction remains an issue until the next issue is affected. Recently an entire Electronic SAM Module Component was replaced as the culprit only to have more issues and the SRS remained. Mercedes has contended that each time they saw the vehicle the the SRS Malfunction was not the problems while other documents were repaired such as battery and SAM. In the meantime since then the car has stalled, components that were working are no longer inoperable. There was a recall that was applied to only specific vehicles of my model year which state the SRS Malfunction was to be replaced and made whole. I never received one of those notices and I will note that my vehicle obviously was affected and should also have this component replaced as it fits the same model year and make of the issues Mercedes has repaired already on affected vehicles. This issue has been on going for several years and Mercedes has failed to rectify this component that makes it dangerous and causes safety concerns for us with the understanding that their note on their website about the SRS Malfunction appeared to me a cop out for them to not be responsible for the fix and recall thsr may have affected more vehicles than its originally accessed number. Instead of fixing this issue they continually find other repairs they indicate as the issue only to end up right back with the same SRS Malfunction and stalling issues with vehicle once again and want to use excuse of car's age as issue and failing to acknowledge and address the SRS Malfunction. Your system would not allow file upload. I can still provide
The contact owns a 2008 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the vehicle lost motive power. The contact stated that an unknown warning light was illuminated. The contact was able to restart the vehicle and drove the vehicle a short distance before the vehicle lost motive power again. The vehicle was towed to the residence. The contact stated while the vehicle was sitting in the driveway, the vehicle independently started and accelerated. The contact stated that the battery terminals were disconnected. The vehicle was towed to the dealer where it was diagnosed with failed wiring harness. The contact was informed that the wiring harness needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but did not assist. The failure mileage was approximately 171,846.
Rear subframe is rusted and corroded
Car was inspected by Mercedes Benz of St. Paul (MN). The rear subframe of the car was corroded (inside out) and the crossmember became disjointed from the rear subframe. I could have been in an accident while driving my C300 with a corroded out rear subframe. I was extremely lucky not to be in an accident while I was driving my C300 with a major defect like corroded rear subframe that caused crossmember to become disjointed from the rear subframe. I was lucky enough to avoid serious injury to myself and/or someone else if the rear subframe had collapsed due to unexpected corrosion. Mercedes Benz USA is aware of this defect since 2018 but they have not issued any recall. Since the rear subframe rusts out from inside, there will be no visible defect until the rear subframe fails.
My car has 85,000 miles on it and the Rear Trailing Arm Frame on the drivers side has rusted from the inside out. It is a good thing I have become aware of this, as it was about to break and cause me to lose control of my car. This needs to be recalled before someone gets hurt. In Canada and Germany Mercedes is fixing this for free. Why have Americans not been warned about this potentially deadly safety issue? I am reading many common experiences of cars with less than 50,000 miles on them.
While driving noticed that the car was making a clunking noise from the right rear and car was not stable while making a turn and started to swerve to the right while braking. Jacked up the car this afternoon and see that one of the rear links rusted off from the rear subframe due to rust. Subframe is made of very thin metal that is not resistant to rust. Fortunately I didn't need to perform emergency braking since car is very difficult to control now. Car no longer drivable and needs a new rear subframe to be installed. ~ $5,000 dollars.
-The rear subframe rusted through and broke. This made the vehicle extremely unsafe to drive. Braking caused the vehicle to veer right and was unsafe to stop. -Both a Mercedes dealership service center and an independent service center confirmed and verified the issue. -The part was inspected by the Mercedes dealership service center and the independent service center. -There were no warning lights or messages. The vehicle started making minor sounds in the rear of the vehicle prior to failure.
The contact owns a 2008 Mercedes-Benz C350. The contact stated that after the vehicle was turned off, she attempted to restart the vehicle, but the engine failed to turn over. The contact stated that the next day the vehicle started; however, while driving at an undisclosed speed, the vehicle stalled. The contact stated that several unknown warning lights illuminated, and the speedometer started to malfunction. The vehicle was towed to the dealer; however, the contact was unsure if the vehicle was diagnosed. Additionally, the contact stated that on a separate occasion while driving at an undisclosed speed, she noticed that water had started to leak from the sun visor. The contact also heard water moving around on the floorboard. The vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 166,000.
After repair done on the confirmed recall airbag computer/module my vehicle became immobile, malfuctioned. The vehicle warning lamps alerted the airbag malfunctioned, srs malfunction. I seeked service for repair of this recall by experts. This safety issue is still ongoing and urgency is needed for this to be resolved.
The contact owns a 2008 Mercedes-Benz C350. The contact attempted to start the vehicle however, the vehicle failed to start-up. There were no warning lights illuminated. The vehicle was towed to the dealer. The dealer diagnosed the vehicle Electronic Steering Lock failure. The vehicle was currently being repaired. The manufacturer was notified of the failure. The approximate failure mileage was 78,000.
The rear subframe is rusted and failing it is unsafe to drive. Mercedes is aware of the problem and has fixed the issue in Canada the UK and Germany free of charge. It would cost me around $4600.00 to fix out of my pocket. I have emailed the dealer where I take my car for service as well as corporate Mercedes in Germany and I am waiting for a reply. Why should I pay when they know it’s not safe and it’s a manufacturer defect ? Are they waiting for a catastrophe before they recall?
Pulled into parking space on side of street and turned off vehicle to pick up restaurant food. Returned to vehicle within 5 minutes, turned the key, and vehicle was dead. 93 year old mother was in car which was now stuck in parking space. We had to open the doors, due to vehicle windows not functioning, to try to prevent inside of car from overheating due to outside temperature. Called AAA, who arrived after about 45 minutes, tried to jump start car, indicated appeared battery was fine. Had to re-contact AAA to get car towed. Waited another 45 minutes for tow truck to arrive. Again checked battery and ignition, battery fine, car was locked in park and steering wheel was locked,. Towing technician had to lift up center console to reach underneath to switch to neutral. Technician had great difficulty getting car onto flatbed of tow truck because it kept slipping back into park. Adding to the difficulty was the location of the car in the parking space on the side of a busy street. Car was towed from Newport, RI to Tiverton, RI to Viti Mercedes dealer, who confirmed the problem. There were no warning lamps, messages or other symptoms of the problem prior to the failure. The final bill to repair this issue was $2,214.15. Upon review of other incidents that occurred with this make, model and year, there have been a myriad of accounts of this same issue going back many years. Based on the numerous incidents of this type and the potential safety devastation this could have caused, the $2,214.15 paid for repair in addition to $55 for towing should be reimbursed. This is a major safety issue that could be detrimental to the driver, occupants, towing company and other people around the disabled vehicle.
I was driving and the brake pedal went to the floor I managed to get the car in the garage and brake fluid leaked all over the floor Had the car towed to the dealer inspection show both stainless steel brake lines corroded in the same place Leaked out brake fluid end result was 5000 dollar repair bill
The rear subframe is corroded, the rear subframe is a structural part of the car that Mercedes refuses to cover under warranty or issue a recall for even though it is issued under recall in Canada
Both headlights wiring harnesses (right and left ) wiring has melted and all wiring is now exposed and touching and causing all light bulbs ( headlights-tail lights-turn signals-brake lights-ect) to be shortage out due to the original wiring not being constructed to resist the heat from the engine and environment.We had MB of Maidland,fl and Elite motors of Ococee,fl to view this issue with the only fix is out-of-pocket repair in the thousands of dollars.i have a neighbor with a MB experiencing similar problems
The contact owns a 2008 Mercedes-Benz C300. The contact stated that the vehicle was to a State Inspection Station to be State Inspected however while inspecting the vehicle the mechanic found severe corrosion and rust holes in the rear subframe of the vehicle. The contact was informed that the subframe needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 72,000.
At only 59,000 miles, the brake lines of my Mercedes C300 suddenly developed a significant leak of brake fluid which caused the brake pedal to go all the way to the floor with minimum function. The car was immediately taken to the dealership where the service dept confirmed that all of the brake lines had become corroded and needed to be replaced. They also communicated that this was a common issue on these vehicles which I have further confirmed by identical complaints raised on the www.mbworld.org forum page. The manufacturer used faulty materials prone to premature corrosion and sudden failure for the brake lines on these vehicles which places drivers at a significant danger and safety risk. There should be an immediate recall of all of these vehicles to replace these defective brake lines subject to sudden failure at the expense of the manufacturer.
What component or system failed or malfunctioned, and is it available for inspection upon request? The front passenger seat is not able to make adjustments. Seat has moved out of the rails, one side moves and the others does not move. How was your safety or the safety of others put at risk? Passengers are stuck in the front, not able to make any adjustments. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes, they are saying that the frame of the seat that has been made by Mercedes is like a sheet metal and very very brittle. The shaft has been bent overtime and moves out of the motor. When it bends the shaft is shortened and will move only one of the sides. One side moves and the other side does not move. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Yes, it was inspected by the manufacturer but no action been taken. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? NO warning lights or anything.
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When I was driving, the passenger active headrest suddenly deployed and pop out. I’m glad on one was on the passenger seat, and the airbags did not deployed. I’m concerned about the safety of airbags accidentally deploy in the future with the broken headrest.
Failure of rear subframe at passenger side connection to the lower thrust arm/trailing link that transmits force from wheel carrier to car frame. The bracket portion of the rear subframe for this connection tore loose at the weld to the carrier, possibly during moderate acceleration at an at-grade railroad crossing in downtown St Paul, MN. This occurred on 8/12/21 at roughly 4:15 in the afternoon. The car became difficult to drive and control, requiring the steering wheel to be turned slightly to the right and held there while the car was going straight. The dealership was contacted about the failed subframe but neither they nor the OEM has inspected the vehicle.
Error codes 1200 and 1208 regarding the lack of tension on the timing belt due to a worn sprocket. It was certified by two different Mercedes Benz mechanics with ample experience with these cars. Vehicle still runs but I was warned to stop it and fix it before it is a major problem.
DROVE 4 BLOCKS AWAY FROM MY HOME TO THE STORE IN MERCED CA ON GST AND 20TH..WHEN I TRIED TO START THE CAR IT DIDN'T START AND MY STEERING WHEEL WAS LOCKED.AND I COULDN'T TAKE IT OUT OF PARK. I HAVE HAD TO REPLACE TAIL LIGHTS A FEW TIMES THIS LAST MONTH. ## VIN PASSED ## MERCEDES-BENZ 2008 c300 ##
I TOOK MY CAR TO THE MERCEDES DEALERSHIP FOR AN ALIGNMENT. IT IS A 2008 C300 SERIES. AFTER THEY CALLED AND SAID IT WAS DONE THEY SAID THAT THE ESL MECHANISM LOCKED UP IN THE CAR AND COMPLETELY FAILED. TO THIS POINT I HAVE NEVER HAD AN ISSUE WITH THIS CAR, AND I HAVE NEVER HAD IT FAIL. NOW THEY ARE TELLING ME THAT IT JUST HAPPENS TO BE ONE OF THE WORST PARTS THAT THEY HAVE TO REPAIR NOTORIOUSLY IN THESE CARS. SO I CALLED TWO OTHER DEALERSHIPS OF THE SAME BUILD TWO OTHER MERCEDES DEALERSHIPS TOLD ME THE SAME THING. I LOOKED UP IN THE BLOG SYSTEM AND FOUND IN THE NATIONAL SAFETY RECORDS THAT NUMEROUS PEOPLE HAVE HAD THE SAME COMPLAINT AND THEY HAVE ALL BEEN FILED. WHY ARE WE NOT STARTING A RECALL ON THIS BECAUSE TO GET MY CAR BACK WHAT WAS SUPPOSED TO BE $167 IS NOW 1,267.00 THIS IS QUITE A JUMP FOR A CAR I HAVE NEVER HAD THIS ISSUE WITH. THEY INSISTED THAT THERE IS NOTHING THAT CAN BE DONE TO REPAIR IT AND AS LIKELY AS IT IS IT WAS BOUND TO HAPPEN AT ANY TIME. SO MY COMPLAINT IS WHAT DO I NEED TO DO TO START A RECALL ON THIS ITEM. I HAVE A HARD TIME WITH ALL OF THE SAME PARTS GOING BAD AND DEALERSHIP PARTIES ALSO TELLING US THESE ARE BAD PARTS BUT I RECALL HAS NOT BEEN INITIATED. BUT OTHER ANCILLARY ISSUES HAVE BEEN RECALLED THAT ARE LITTLE TO NO IMPORTANCE HOWEVER THIS ONE AT ANY GIVEN MOMENT CAN LOCK UP YOUR STEERING WHEEL AND COULD POTENTIAL HE CAUSE AN ACCIDENT. IS WHAT TWO DEALERSHIPS TOLD ME OF COURSE THE ONE THAT I AM GETTING REPAIRED WOULD NOT ADMIT THAT. PLEASE HELP US GET A RECALL ON THIS WE ARE AT YOUR MERCY FOR THE SAFETY OF OUR FAMILIES DRIVING A MERCEDES-BENZ CAR.
STEPPED ON THE BRAKES AND THE CAR VEERED SHARPLY TO THE RIGHT. VEHICLE FELT VERY UNSTABLE. WOULD OF BEEN HORRIBLE IF THE SURFACE WAS SNOW COVERED OR ICY. TOOK INTO A REPAIR FACILITY AND FOUND OUT THE REAR SUBFRAME HAS RUSTED TO THE POINT OF FAILURE. THE REAR TIRE COULD MOVE SEVERAL INCHES. SOMEBODY COULD BE KILLED OR SEVERELY INJURED.
Data synced from NHTSA on May 4, 2026