VERY STRONG GAS SMELL INSIDE THE CAR AND OUTSIDE THE CAR. GAS LEAKING ON THE FLOOR FROM GAS TANK AREA.
2006 Mercedes Benz CLS500
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 CLS500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
49 reports with mileage · 13 unknown
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.
- Service Brakes. Review the 21 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel/propulsion System. Review the 12 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Fuel System, Gasoline. Review the 11 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
Fuel/propulsion System complaints
12 reportsBOUGHT THE 2006 CLS 500 2 YEARS AGO, SINCE THAT SECOND DAY I HAVE ISSUES WITH SBC MODULE, I CALL MB DEALER THEY TOLD ME MY CAR WAS OUT OF WARRANTY, SINCE THE PRODUCTION DATE WAS 2004, OKAY AFTER THAT I TRY SEVERAL OTHER MECHANICS AND NOBODY HAVE THE STAR TOOL TO FIX UP, THE CAR IS NOT SAFE TO DRIVE AND I CONTINUE TAKE THE RISK…
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BOUGHT THE 2006 CLS 500 2 YEARS AGO, SINCE THAT SECOND DAY I HAVE ISSUES WITH SBC MODULE, I CALL MB DEALER THEY TOLD ME MY CAR WAS OUT OF WARRANTY, SINCE THE PRODUCTION DATE WAS 2004, OKAY AFTER THAT I TRY SEVERAL OTHER MECHANICS AND NOBODY HAVE THE STAR TOOL TO FIX UP, THE CAR IS NOT SAFE TO DRIVE AND I CONTINUE TAKE THE RISK COUPLE MONTHS UNTIL THE FUEL LINE STARTS LEAK ON THE PUMP, THIS COULD GENERATE A SPARK AND BURN MY CAR, I CALL AGAIN MB DEALER AND THEY TOLD ME IS PROBABLY UNSAFE TO START THE CAR. AFTER ALL THIS YEARS I PARKED THE CAR AND ALL MY SUSPENSION WAS BROKE AS WELL, CALL AGAIN THE MB DEALER THEY ESTIMATED $ 1800 TO REPLACE THE AIR SHOCKS, SO I BUY FROM ARNOTT THE SAME MB SELL AND I REPLACE ALL 4, SO THE CAR IS UP AGAIN, NEXT WEEK I DECIDE TO SELL THE VEHICLE AFTER DRIVING IN 3 YEARS 9,000 MILES ONLY, TRY TO MOVE THE CAR FROM THE GARAGE, GUESS WHAT, MY TRANSMISSION GO TO LIMP MODE BECAUSE THE BREAKS ARE NOT WORKING, SO FAR I DECIDE TO WRITE IN HERE TO COMPLAIN WHY A SUCH BEAUTIFUL CAR HAVE SO MANY ISSUES AND MB DOES NOT CARE FOR THE OLD MB. I ALMOST GET ON ACCIDENT WHEN MY BREAKS COMPLETE FROZEN TO THE END !!!
IN SEPTEMBER, 2015 TOOK MY VEHICLE TO HOUSTON GREENWAY (3900 SOUTHWEST FREEWAY; HOUSTON, TEXAS 77027) FOR AN INSPECTION OF THE FUEL TANK (STRONG FUEL ODORS WERE DETECTED). THE INSPECTION REVEALED THAT THE FUEL TANK REQUIRED REPLACEMENT. THE REPLACEMENT WORK WAS DONE AND I PAID FOR IT OUT OF POCKET. I RECENTLY RECEIVED A LET…
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IN SEPTEMBER, 2015 TOOK MY VEHICLE TO HOUSTON GREENWAY (3900 SOUTHWEST FREEWAY; HOUSTON, TEXAS 77027) FOR AN INSPECTION OF THE FUEL TANK (STRONG FUEL ODORS WERE DETECTED). THE INSPECTION REVEALED THAT THE FUEL TANK REQUIRED REPLACEMENT. THE REPLACEMENT WORK WAS DONE AND I PAID FOR IT OUT OF POCKET. I RECENTLY RECEIVED A LETTER FROM MBUSA STATING THAT THE MBUSA HAD ELECTED TO EXTEND THE WARRANTY ON MY VEHICLE
I BEGAN SMELLING FUEL IN THE CABIN OF MY CAR AND CONTACTED THE MERCEDES BENZ DEALERSHIP IN MY AREA, WESTMINSTER, CO. THE WOMAN I SPOKE WITH TOLD ME THAT SHE WAS UNAWARE OF ANY ISSUES, BUT THAT SHE WOULD LOOK INTO IT AND GET BACK TO ME. I NEVER HEARD BACK. THE SMELL WAS GETTING WORSE AND AFTER 3 WEEKS, I COULD NOT DRIVE WITH …
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I BEGAN SMELLING FUEL IN THE CABIN OF MY CAR AND CONTACTED THE MERCEDES BENZ DEALERSHIP IN MY AREA, WESTMINSTER, CO. THE WOMAN I SPOKE WITH TOLD ME THAT SHE WAS UNAWARE OF ANY ISSUES, BUT THAT SHE WOULD LOOK INTO IT AND GET BACK TO ME. I NEVER HEARD BACK. THE SMELL WAS GETTING WORSE AND AFTER 3 WEEKS, I COULD NOT DRIVE WITH MY WINDOWS CLOSED, GAGGED WHEN I GOT INTO THE CAR AND SMELLED LIKE FUEL UPON EXITING THE CAR. I CALLED MERCEDES BENZ AGAIN AND ASKED IF I COULD BRING THE CAR IN. I WAS TOLD I COULD AND THAT THERE WAS A WARRANTY EXTENSION FOR FAULTY FUEL TANKS. THE FUEL TANK WAS ALLEGEDLY REPAIRED, BUT UPON RETURNING THE CAR TO ME, THE CAR STILL SMELLED LIKE FUEL. I THOUGHT THE SMELL MIGHT DISSIPATE OVER A FEW DAYS, BUT IT DID NOT, SEEMED TO GET WORSE AGAIN, SO I TOOK THE CAR BACK IN. I WAS TOLD BY THE SERVICE REP THAT THE FUEL HAD LEAKED INTO THE UNDERLAYMENT OF THE CAR AND WAS DETERIORATING THE FLOOR BOARDS. I WAS ALSO TOLD TO "NOT SMOKE IN THE CAR" BY THE SERVICE REP. MERCEDES BENZ IS NOW REFUSING TO REPAIR THIS DAMAGE CAUSED BY THE FAULTY PART. THEY FEEL THAT THE CAR IS "SAFE" EVEN THOUGH I WAS TOLD NOT TO SMOKE IN IT. I DON'T SMOKE, BUT IF THERE IS AN ELECTRICAL SPARK OR I GET IN AN ACCIDENT, I DON'T WANT THE CAR TO BLOW UP.
STRONG SMELL OF GASOLINE IN INTERIOR OF CAR ALONG WITH SMELL IN GARAGE AFTER OVERNIGHT PARKING. CHECKED ENGINE FOR LEAKS AS WELL AS GENERAL TANK AREA. NEGATIVE. I THINK THAT THE FUEL SENDING UNIT (UNDER REAR SEAT MAY BE LOOSE OR DEFECTIVE. CAN'T OVER EMPHASIZE THE STRONG GAS SMELL, WHILE STATIONARY--SEEMS TO DISSIPATE ON MOVEMEN…
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STRONG SMELL OF GASOLINE IN INTERIOR OF CAR ALONG WITH SMELL IN GARAGE AFTER OVERNIGHT PARKING. CHECKED ENGINE FOR LEAKS AS WELL AS GENERAL TANK AREA. NEGATIVE. I THINK THAT THE FUEL SENDING UNIT (UNDER REAR SEAT MAY BE LOOSE OR DEFECTIVE. CAN'T OVER EMPHASIZE THE STRONG GAS SMELL, WHILE STATIONARY--SEEMS TO DISSIPATE ON MOVEMENT.
FUEL PUMP LEAKS AND VAPOR SMELL IS VERY PREVALENT. FUEL TANK ASSEMBLY HAS BEEN ORDERED, BUT APPARENTLY MERCEDES IS VERY SLOW ON SHIPPING THE PARTS BECAUSE THERE ARE SO MANY CARS WITH THIS SAME PROBLEM. BESIDES THE SMELL, I THINK THIS COULD BE DANGEROUS. I HAVE ALWAYS BEEN TOLD THAT WHERE THERE ARE FUMES AN EXPLOSION IS POSSIBLE.…
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FUEL PUMP LEAKS AND VAPOR SMELL IS VERY PREVALENT. FUEL TANK ASSEMBLY HAS BEEN ORDERED, BUT APPARENTLY MERCEDES IS VERY SLOW ON SHIPPING THE PARTS BECAUSE THERE ARE SO MANY CARS WITH THIS SAME PROBLEM. BESIDES THE SMELL, I THINK THIS COULD BE DANGEROUS. I HAVE ALWAYS BEEN TOLD THAT WHERE THERE ARE FUMES AN EXPLOSION IS POSSIBLE.I HAVE BEEN TOLD THAT PARTS HAVE TO COME FROM GERMANY SINCE NO ONE IN THE STATES HAS THEM. MERCEDES SHOULD BE ASHAMED AND HELD TO A HIGHER STANDARD. *TR
WHEN FUEL TANK IS FILLED COMPLETELY THERE IS AN EXTREMELY STRONG ODOR OF GASOLINE INSIDE AND OUTSIDE CAR. FUEL PUMP HAS BEEN REPLACED AND THE FUEL TANK SEALS HAVE BEEN REPLACED MULTIPLE TIMES WITH NO IMPROVEMENT. GAS CAP WARNING LIGHT NOW COMES ON INTERMITTENTLY AND CHECK ENGINE LIGHT REMAINS ON. HAVE BEEN ADVISED TO REPLACE FUE…
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WHEN FUEL TANK IS FILLED COMPLETELY THERE IS AN EXTREMELY STRONG ODOR OF GASOLINE INSIDE AND OUTSIDE CAR. FUEL PUMP HAS BEEN REPLACED AND THE FUEL TANK SEALS HAVE BEEN REPLACED MULTIPLE TIMES WITH NO IMPROVEMENT. GAS CAP WARNING LIGHT NOW COMES ON INTERMITTENTLY AND CHECK ENGINE LIGHT REMAINS ON. HAVE BEEN ADVISED TO REPLACE FUEL TANK NOW. *TR
TL* THE CONTACT OWNS A 2006 MERCEDES BENZ CLS500. WHILE DRIVING APPROXIMATELY 45 MPH, THE CONTACT NOTICED A STRONG FUEL ODOR INSIDE THE VEHICLE. THE DEALER DIAGNOSED THAT THE FUEL PUMP NEEDED TO BE REPLACED. THE MANUFACTURER HAD NOT BEEN NOTIFIED. THE APPROXIMATE FAILURE MILEAGE WAS 109,000.
TL* THE CONTACT OWNS A 2006 MERCEDES BENZ CLS500. THE CONTACT STATED THAT FUEL WAS CONTINUOUSLY LEAKING FROM UNDER THE FRONT DRIVER'S SIDE SEAT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS, WHO STATED THAT THE FUEL SENDING UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE APPROXIMATE FAILURE MILEAGE WA…
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TL* THE CONTACT OWNS A 2006 MERCEDES BENZ CLS500. THE CONTACT STATED THAT FUEL WAS CONTINUOUSLY LEAKING FROM UNDER THE FRONT DRIVER'S SIDE SEAT. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR DIAGNOSIS, WHO STATED THAT THE FUEL SENDING UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE APPROXIMATE FAILURE MILEAGE WAS 72,000. THE VIN WAS UNAVAILABLE.
JUST LIKE THE OTHER MERCEDES VEHICLES, THE FUEL PUMPS ARE UNDER THE BACK SEAT. MY DAUGHTER RIDES IN THE BACK. ONE MORNING I WAKE UP AND MY CAR SMELLED AS IF SOMEONE POURED GASOLINE ALL THROUGHOUT THE AUTOMOBILE. I LET THE WINDOWS DOWN AND TOOK MY CAR TO AMERICAN AUTO TECH WHERE I SPENT OVER 700.00. IT TOOK OVER 2MONTHS TO GET TH…
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JUST LIKE THE OTHER MERCEDES VEHICLES, THE FUEL PUMPS ARE UNDER THE BACK SEAT. MY DAUGHTER RIDES IN THE BACK. ONE MORNING I WAKE UP AND MY CAR SMELLED AS IF SOMEONE POURED GASOLINE ALL THROUGHOUT THE AUTOMOBILE. I LET THE WINDOWS DOWN AND TOOK MY CAR TO AMERICAN AUTO TECH WHERE I SPENT OVER 700.00. IT TOOK OVER 2MONTHS TO GET THE SMELL OUT OF THE CAR AND I HAD TO REPLACE THE COVER AND LINING THAT SEPARATES THE BACK SEAT CUSHION PORTION FROM THE ENTRANCE OF THE FUEL PUMPS THAT SIT UNDER BOTH BACK SEATS OF THIS CAR. THIS IS NOT ONLY AN ISSUE WITH THE E CLASS BUT MOST MERCEDES MADE THROUGH OUT THAT YEAR. I HAVE A RECEIPT IN WHICH I HAVE PAID AND FEEL THAT MERCEDES NEED TO COMPENSATE ME AND OTHERS FOR THIS DEFECTIVE PART OR FUEL LEAKAGE. IT EVEN LEAKS FROM UNDER THE CAR. THIS IS VERY DANGEROUS TO MY FAMILY AND OTHERS AROUND. *TR
Official recalls
324V874000 · Visibility:sun/moon Roof Assembly
Nov 19, 2024
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2001-2011 C-Class, CLK, E-Class, and CLS vehicles. Please see the recall report for a complete list of models and model years. The glass sunroof panel may not be properly secured and can detach.
Consequence & remedy
Consequence: A detached sunroof panel can become a road hazard, increasing the risk of a crash.
Remedy: Dealers will inspect and replace the sunroof panel as necessary, free of charge. Owner notification letters were mailed January 10, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of previous NHTSA recall number 22V-954. MBUSA's number for this recall is 2024120001/2/3.
21V196000 · Visibility:sun/moon Roof Assembly
Mar 19, 2021
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2006-2007 C350, C230, C280, CLK350, E320CDI, E350 Wagon, E350, 2006 C55 AMG, CLK500, CLS500, CLS55 AMG, E500 Wagon, E500, E55 AMG, 2007 CLK550, CLS550, CLS63 AMG, E550, E63 AMG, and E63 Wagon AMG vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly causing the glass panel to detach from the vehicle.
Consequence & remedy
Consequence: A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.
Remedy: MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. Owner letters were mailed May 7, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of recall number 19V-918. MBUSA's number for this recall is 2021040012.
19V918000 · Visibility:sun/moon Roof Assembly
Dec 20, 2019
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2001-2011 vehicles. The bonding between the glass panel and the sliding roof frame may deteriorate, possibly resulting in the glass panel detaching from the vehicle. For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V918-4126.pdf
Consequence & remedy
Consequence: A detached glass panel can separate from the vehicle and become a road hazard, increasing the risk of a crash.
Remedy: MBUSA will notify owners, and dealers will inspect the glass panel bonding and replace the sliding roof, as necessary, free of charge. The recall began July 10, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020040011.
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.
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