36 complaints reported

2016 Mercedes-Benz C-Class FUEL/PROPULSION SYSTEM

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
36
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Apr 2021

A STRONG FUEL ODOR COMING FROM THE CAR, WE TRIED TO GET THE DEALER TO REPAIR IT UNDER WARRANTY AND THEY SAID, OVER FUELING WAS CAUSING IT, HOWEVER WITH THE TANK HALF FULL IT DOES STILL SMELL A LOT LIKE GAS, A STRONG ODOR YOU CAN SMELL IT OUTSIDE, THEY DON'T WANT TO TAKE RESPONSIBILITY ON IT, AFTER WARRANTY EXPIRED THEY CAME UP SAYING SOMETHING IS WRONG WITH MY FUEL SYSTEM THAT NEEDS TO BE REPAIRED BUT ITS NOT COVERED BY WARRANTY, THERE ARE A LOT OF COMPLAINTS BUT THEY WANT PEOPLE TO PAY FOR THIS, WE ARE AFRAID THIS COULD START A FIRE WHILE DRIVING, OR EVEN WORSE BURN MY HOUSE DOWN

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: May 2021
Apr 2021

TALK TO DEALER VEHICLE HAS FUEL LINE LEAK NOT COVERED UNDER WARRANTY JUST PURCHASED VEHICLE WITHIN 30 DAYS OF NOTICING THIS ISSUE AND I BELIEVE IT SHOULD BE RECALLED SAFETY ISSUES FUEL SMELL AND COULD CAUSE FIRE

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Mar 2020
Dec 2020

GAS SMELL COMING THROUGH THE VENTS STARTED OFF EVERY NOW AND THEN AND BECAME MORE FREQUENT. PULLED IT IN THE GARAGE AND THE GAS FUMES MADE THE TOTAL GARAGE SMELL. TOOK IT TO THE DEALER AND THEY SAID IT IS FUEL LINE, THAT SITS NEAR THE ENGINE. IT IS IN THE SHOP NOW. AFTER GOOGLING I SEE SEVERAL OTHER PEOPLE HAVE HAD THIS ISSUE WITH THIS CAR. THEY CANNOT TELL ME YET WHAT CAUSED THE PROBLEM, I AM WAITING TO HEAR THAT

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Dec 2020
Dec 2020

THERE WAS AN ODOR OF FUEL INSIDE THE CABIN. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC, AND THE TECHNICIAN INFORMED ME THAT THERE WAS AN STRONG ODOR OF FUEL WHEN HE LIFTED THE HOOD AND ADVISED THE CONTACT TO TAKE THE VEHICLE TO A MERCEDES DEALER BECAUSE HE WAS NOT CERTIFIED TO SERVICE THE VEHICLE.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Dec 2020
Nov 2020

I PURCHASED MY MB C300 USED CERTIFIED AND HAD NOTICED A FUEL SMELL. I SPOKE TO THE DEALERSHIP AND THEY SAID IT WAS NORMAL WITH MB AND NOTHING TO BE CONCERNED WITH. I HAVE NOW HAD THE CAR FOR ABOUT 5 MONTHS AND TOOK IT TO MY LOCAL MB DEALERSHIP TO FIND OUT WHAT IS GOING ON WITH THE SMELL AND THEY SAID IT WAS A KNOWN ISSUE WITH THIS MAKE MODEL AND YEAR AND IT IS NOTHING THAT WILL CAUSE HARM.WELL IT IS NOW COLD OUTSIDE AND THE MORE I USE MY HEAT THE MORE THE SMELL COMES.I CAN LITERALLY SMELL GAS IN MY HOUSE FROM THE CAR JUST BEING (NOT ON OR RUNNING) IN MY ATTACHED GARAGE. THIS IS DEFINITELY A HEALTH ISSUE BECAUSE I FEEL LIKE I MAY PASS OUT IF I STAY TOO LONG IN THE CAR WITH THE HEAT ON. SOMETHING NEEDS TO BE DONE ABOUT THIS BESIDES BEING TOLD IT'S A KNOWN ISSUE. IF ITS WIDELY KNOWN WHY HAS THERE NOT BEEN A RECALL ON IT YET. I ALSO DO NOT UNDERSTAND WHY MY WARRANTY /EXTENDED WARRANTY DOES NOT APPLY TO THIS

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jan 2020
Oct 2020

FUEL LINE LEAK, SMELLS LIKE GASOLINE WHEN HEATER IS TURNED ON.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Oct 2020
Mar 2020

THERE IS A VERY STRONG GAS SMELL WHEN THE HEAT AND/OR DEFROSTER IS TURNED ON. THE HIGHER THE HEAT IS TURNED UP'THE HIGHER THE GAS SMELLS. THE SMELL LINGERS WHEN THE CAR IS NOT RUNNING/CUT-OFF. I HAVE NOTICED THAT THE STRONG SMELL OF GAS DOES NOT OCCUR WHEN THE AIR IS TURNED ON'IT ONLY SMELLS WHEN THE HEAT IS TURNED ON. IT IS SO STRONG'IT WOULD LITERALLY KNOCK YOU OUT.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Jan 2020
Mar 2020

TL* THE CONTACT OWNS A 2016 MERCEDES BENZ C300. THE CONTACT STATED UPON ENTERING THE VEHICLE, THERE WAS AN ABNORMAL FUEL ODOR IN THE CABIN OF THE VEHICLE. THE VEHICLE WAS TAKEN TO PARK PLACE MOTORCARS MERCEDES-BENZ GRAPEVINE LOCATED AT (1300 TEXAN TRAIL, GRAPEVINE, TX 76051) TO BE DIAGNOSED. THE CONTACT WAS INFORMED THAT THE HIGH-PRESSURE FUEL LINES NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS NOT COVERED UNDER WARRANTY. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 17,000.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Feb 2020
Dec 2019

HOSE CLAMPS ATTACHING THE HIGH PRESSURE FUEL LINE LEADING FROM THE FIREWALL-MOUNTED FUEL PUMP TO THE CENTRAL FUEL RAIL FAILED TO MAINTAIN A TIGHT CONNECTION. THIS LEADS TO FUEL LEAKING PAST THE HOSE CLAMP CONNECTION INTO THE OPEN ENGINE COMPARTMENT DURING COLD WEATHER (SUB-40 DEGREES FAHRENHEIT) WHILE THE ENGINE IS RUNNING. WHEN THE AMBIENT TEMPERATURE IN THE ENGINE COMPARTMENT RISES, EITHER BY ENVIRONMENT OR BY HEAT GENERATED FROM THE ENGINE, THE FUEL LEAK SUBSIDES. SYMPTOMS WHEN THIS OCCURS ARE A VERY STRONG FUEL SMELL IN THE PASSENGER COMPARTMENT AND ALSO, UPON FURTHER INSPECTION, OBSERVATION OF LIQUID FUEL POOLING ON THE TOP SIDE OF THE ENGINE COMPARTMENT UNDER TRAY. INTERNET RESEARCH ALSO INDICATE THAT THIS IS A FAIRLY WIDESPREAD PROBLEM AFFECTING AT LEAST 2015-16 W205 MODEL VEHICLES, AND THAT MULTIPLE MERCEDES-BENZ DEALERSHIPS IN THE UNITED STATES HAVE COMMUNICATED VERBALLY TO OTHER CUSTOMERS THAT THIS IS A "KNOWN ISSUE".

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Dec 2019
Jan 2019

THERE'S A CONSTANT GAS SMELL IN MY CAR. THE DEALERSHIP CLAIMED IT WAS A LEAK TWICE, BUT THAT CAN'T BE THE PROBLEM BECAUSE IT STILL CARRIES THE SMELL.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C300, Manufacturer: Mercedes-Benz USA, LLC
Incident: Aug 2018
Feb 2017

TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ C350E. THE CONTACT STATED THAT THE VEHICLE'S AVERAGE MPG RANGED BETWEEN 25 TO 34 MPH. IN ADDITION, THE VEHICLE HAD TO BE RECHARGED EVERY 11 MILES TO KEEP THE ELECTRIC CHARGE GOING ASSOCIATED WITH THE MPG. THE MANUFACTURER INDICATED 51 MPG ON THE STICKER AND IN THE OWNER'S MANUAL. THE CONTACT WAS WAITING FOR THE MANUFACTURER TO PROVIDE FURTHER INFORMATION. THE FAILURE MILEAGE WAS NOT AVAILABLE.

Type: Vehicle, Vehicle: 2016 MERCEDES-BENZ C350E, Manufacturer: Mercedes-Benz USA, LLC
Incident: Feb 2017

Trend Over Time

Complaints by year

Quick Summary

The 2016 Mercedes-Benz C-Class has 36 FUEL/PROPULSION SYSTEM complaints on file. Review the timeline above for detailed owner experiences.