IllustrationFUEL LEAK AT TOP OF SENDING UNIT UNDERNEATH LEFT REAR SEAT. FUEL SMELL IN CAR. I REMOVED SEAT AND COVER AND DISCOVERED FUEL POOLING. *TR
2006 Mercedes Benz Cls
Owner reports · Recalls · Investigations
Limited comparison data
There is not enough comparable history to draw a useful model-year comparison.
About this comparison →How this year compares
Owner complaints by model year
Compare all Cls years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 3 of 3 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Fuel System, Gasoline. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
0 crash reports0 fire reports0 injury reports
What owners actually said
3 reportsCLS 55, POST RECALL ON THE FUEL SENDING UNIT. HAVE TAKEN MY CLS INTO THE DEALER FOR OTHER THINGS AND ADVISED THEM THAT I NOTICED A FUEL SMELL IN THE CAR. THEY SAID THEY COULD NOT FIND ANYTHING, SO ON MY WAY I GO. NOW A YEAR LATER, I REALLY NOTICE THE FUEL SMELL WHEN I FILL UP, I PARKED IN THE PARKING GARAGE WHERE I WORK AND WHEN…
Read full complaint
CLS 55, POST RECALL ON THE FUEL SENDING UNIT. HAVE TAKEN MY CLS INTO THE DEALER FOR OTHER THINGS AND ADVISED THEM THAT I NOTICED A FUEL SMELL IN THE CAR. THEY SAID THEY COULD NOT FIND ANYTHING, SO ON MY WAY I GO. NOW A YEAR LATER, I REALLY NOTICE THE FUEL SMELL WHEN I FILL UP, I PARKED IN THE PARKING GARAGE WHERE I WORK AND WHEN I CAME OUT THERE WAS A PUDDLE OF FUEL UNDER THE CAR ON THE DRIVERS SIDE (CAR WAS PARKED ON A SLOPED GARAGE AT POSSIBLY 20 DEGREE) AND STRONG ODOR OF FUEL IN THE GARAGE. I CALLED MB AND THEY SAID THAT IT'S NOT REALLY THEIR PROBLEM ANYMORE. HMMM, WELL, THE RECALL DIDN'T WORK, DID THEY RE MANUFACTURE THAT PART? *TR
CAR WAS SMELLING OF GAS ON SEPT 2, 2013. I TOOK IT TO MIKE SMITH MERCEDES ON SEPT 3, 2013 TALKED TO SERVICE REP, HE SAID IT MAY BE THE FUEL PUMP SENDING UNIT. HE SAID IT WAS GOING TO TAKE ALL DAY FOR THEM TO GET TO IT AND THAT IT PROBABLY WOULD COST SEVERAL THOUSAND TO FIX. I THEN TOOK IT TO MERCEDES SERVICE, LP IN BEAUMONT TX.…
Read full complaint
CAR WAS SMELLING OF GAS ON SEPT 2, 2013. I TOOK IT TO MIKE SMITH MERCEDES ON SEPT 3, 2013 TALKED TO SERVICE REP, HE SAID IT MAY BE THE FUEL PUMP SENDING UNIT. HE SAID IT WAS GOING TO TAKE ALL DAY FOR THEM TO GET TO IT AND THAT IT PROBABLY WOULD COST SEVERAL THOUSAND TO FIX. I THEN TOOK IT TO MERCEDES SERVICE, LP IN BEAUMONT TX. THEY FOUND THAT IT WAS LEAKING GAS TREMENDOUSLY UNDER MY BACK SEAT. THEY FIXED THE PROBLEM TODAY SEPT 4, 2013. THIS DEFECTIVE FUEL SYSTEM COULD HAVE KILLED MYSELF MY YOUNG 5 YEAR OLD DAUGHTER AND WIFE. I CALLED CORPORATE MERCEDES AND TALKED TO A GUY NAMED TED AT 800-367-6372 EXT 6341. HE WAS NOT MUCH HELP. I HAD TO PAY OUT OF POCKET FOR THIS DEFECT AND THIS IS SOMETHING THAT LEXUS, TOYOTA WHICH I HAVE ALSO WOULD NEVER HAVE SUCH A ISSUE. *JB
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.