There are 4 owner-reported visibility & wipers complaints for the 2014 Mercedes-Benz C-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I prchased used with no visible damage to the windshield. In the inclement weather for no apparent reason my windshield began to crack as I was driving the vehicle. I pulled over as soon as I could. The crack stoped and I called the Mercedes Benz manufacture to no avail. I decided to research to see if this is common and the article says, "that the 2014 Mercedes Benz" windshields are known to crack in extrem cold and hot conditions. The windshield has continued to spider and crack in different direction. I feel threathened at this point and featful for my life that this will implode in my face while driving. I did in good faith reach out to someone.
The contact owns a 2014 Mercedes-Benz C250. The contact stated that the vehicle was getting water inside the cabin from a leak coming from the sunroof. The contact stated that while driving at various speeds, the vehicle started jerking and making a choking sound as if the vehicle was going to shut off. The check-engine warning light was illuminated. The vehicle was taken to the dealer who determined that there was an electrical failure related to the leak coming from the sunroof leak and that there were corroded cam blocks. The cable for the sunroof was replaced along with the mats on the floor. The contact was unsure if the engine was repaired. The contact stated that the check engine warning light was intermittently illuminated, and the jerking of the vehicle persisted. The manufacturer was not made aware of the failure. The approximate failure mileage was 54,315.
WHEN THE OUTSIDE AIR INTAKE IS COVERED WITH SNOW OR ICE IT WILL NOT ALLOW OUTSIDE AIR INTO THE HVAC SYSTEM. THIS CAUSES THE FRONT WINDOW DEFROSTER TO NOT BE ABLE TO BLOW AIR ON THE WINDSHIELD TO CLEAR THE WINDSHIELD. THIS IS A VERY DANGEROUS DESIGN FLAW ON BEHALF OF MERCEDES BENZ. IF HOT WATER IS POURED OVER THE OUTSIDE AIR INTAKE SCREEN THE BLOWER WILL OPERATE PROPERLY, BLOWING HOT AIR TO DEFROST THE FRONT WINDSHIELD. ONLY HAPPENS IF THE CAR IS OUTSIDE WITH SNOW OR ICE BUILDUP TO BLOCK AIRFLOW INTO THE HVAC SYSTEM. DEFROSTER WILL WORK PROPERLY IF NO SNOW OR ICE IS COVERING THE AREA.
I WAS EXITING THE INTERSTATE AND MAKING A L TURN ONTO ANOTHER HIGHWAY. AS I AM IN THE TURN I HEAR A LOUD POP AND SEE THAT MY SUNROOF HAS SHATTERED. IT REMAINED INTACT AND DID NOT SHOWER ME WITH GLASS BUT IT IS CRACKED AND BOWED IT ON ALL CORNERS AND IS BOWED UP IN THE CENTER OF THE GLASS.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026