Total Complaints
22 filings
MERCEDES-BENZ CLS550 · model year
22 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2008MERCEDES-BENZCLS550 carries 22 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2008 CLS550 is fuel/propulsion system with 5 filings, followed by air bags (3) and electrical system (3). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2008 CLS550. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
22 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| FUEL/PROPULSION SYSTEM | 5 |
| AIR BAGS | 3 |
| ELECTRICAL SYSTEM | 3 |
| SUSPENSION | 2 |
| ENGINE | 2 |
| STEERING | 1 |
| SERVICE BRAKES | 1 |
| TIRES | 1 |
| ELECTRONIC STABILITY CONTROL (ESC) | 1 |
| EXTERIOR LIGHTING | 1 |
| UNKNOWN OR OTHER | 1 |
| POWER TRAIN | 1 |
The failed component of the car was the drivers side fuel transfer pump. After noticing the faint smell of gas in my car i checked under the rear driver side passenger seat. I was shocked to find more than 16 fluid ounces of gas floating freely around the well of the gas pump.the insulation under the rear passenger seat is soaked in gas. I can only imagine what couldâve happened if there was an accident or if someone even sparked a cigarette in my car. Not only is this extremely dangerous, there are negative consequences that result from inhaling gas constantly while driving. Gas contains cancerous properties, people should not be subject to unknowingly driving around a car that is manufactured to the defect of releasing cancerous vapors. Who knows what damage inhaling gas fumes for the past months has done to me or my passengers. In the even that someone were to spark a cigarette in the car it was possible that the car couldâve caught fire. The passengers in the rear right seats
I bought a 2008 mercedes cls and have had it for a while now and with no warning it has started making a banging noise while idling. It idles very rough and shakes my car. I'm unable to drive it safely at this point. The engine is also mimicking symptoms of an idler gear/ balance shaft wearing down due to poor building materials from factory allowing movement of the timing chain. Apparently causing the engine to blow. I don't know what to do now. I don't know if it is covered by mercedes. But I know I am not alone on needing this to become a recall...
I see there was a recall on instrument clusters on my vehicle in 2001. My instrument cluster is completely black and I canât see speed or any thing at night. You cant replace the bulb or cluster unless mercedes reprogram it which the price is rediculous. I did some research and seen that Mercedes did some recalls for my vehicle but it doesnât show up. I was told to contact you guys in regards to this.
My doors will open without the keyfob being in close proximity to the vehicle. My car has been stolen d/t this feature. Also the electrical lighting system malfunctions causing dimmer lights especially when driving at night
My doors will open without the keyfob being in close proximity to the vehicle. My car has been stolen d/t this feature. Also the electrical lighting system malfunctions causing dimmer lights especially when driving at night
My doors will open without the keyfob being in close proximity to the vehicle. My car has been stolen d/t this feature. Also the electrical lighting system malfunctions causing dimmer lights especially when driving at night
MY AIRBAGS DEPLOYED AFTER ON DAY OF DRIVING HOME FROM A DAY BABYSITTING MY NIECE AND NEPHEW I GOT HOME PARKED MY CAR IN THE GARAGE AND THAT WHOLE NIGHT FROM 11 AT NIGHT UNTILL ABOUT 330 IN THE MORNING THE LOUDEST SOUND I'VE EVER HERD THE EQUIVALENT OF A BOMB DETONATION EXPLOSION WENT OFF AND IM 10 15 FEET AWAY PAINTING MY GARAGE AND NEXT THING I KNOW I LOOK AT MY MERCEDES-BENZ CLS550 2008. ALL THE AIRBAGS IN THE ROOF AND BY THE BACK WINDOW DETONATING! I CANT UNDERSTAND WHY TO THIS DAY THE CAR WAS LOCKED KEYS WHERE IN MY ROOM IN THE HOUSE. AND I HAVE NO IDEA HOW THIS COULD OF HAPPENED. ! PLEASE GET AHOLD OF ME AT YOUR EARLIEST CONVENIENCE BECAUSE THIS IS ABSOLUTELY INSANE SOMETIMES LIKE THIS COULD HAPPEN IN A HIGH END LUXURY CAR. AGAIN IT'S A 2008 MERCEDES-BENZ CLS550. VIN# [XXX]. YOU CAN REACH ME IF YOU HAVE ANY QUESTIONS AT [XXX]. OR MY EMAIL [XXX]. THANK-YOU. THE CAR IS CURRENTLY AT ELITE MERCEDES BENZ GETTING LOOKED AT I WILL HAVE THEM SEND ME PHOTOS TO SEND TO IF YOU WOULD L
Mileage: 95,000
MY AIRBAGS DEPLOYED AFTER ON DAY OF DRIVING HOME FROM A DAY BABYSITTING MY NIECE AND NEPHEW I GOT HOME PARKED MY CAR IN THE GARAGE AND THAT WHOLE NIGHT FROM 11 AT NIGHT UNTILL ABOUT 330 IN THE MORNING THE LOUDEST SOUND I'VE EVER HERD THE EQUIVALENT OF A BOMB DETONATION EXPLOSION WENT OFF AND IM 10 15 FEET AWAY PAINTING MY GARAGE AND NEXT THING I KNOW I LOOK AT MY MERCEDES-BENZ CLS550 2008. ALL THE AIRBAGS IN THE ROOF AND BY THE BACK WINDOW DETONATING! I CANT UNDERSTAND WHY TO THIS DAY THE CAR WAS LOCKED KEYS WHERE IN MY ROOM IN THE HOUSE. AND I HAVE NO IDEA HOW THIS COULD OF HAPPENED. ! PLEASE GET AHOLD OF ME AT YOUR EARLIEST CONVENIENCE BECAUSE THIS IS ABSOLUTELY INSANE SOMETIMES LIKE THIS COULD HAPPEN IN A HIGH END LUXURY CAR. AGAIN IT'S A 2008 MERCEDES-BENZ CLS550. VIN# [XXX]. YOU CAN REACH ME IF YOU HAVE ANY QUESTIONS AT [XXX]. OR MY EMAIL [XXX]. THANK-YOU. THE CAR IS CURRENTLY AT ELITE MERCEDES BENZ GETTING LOOKED AT I WILL HAVE THEM SEND ME PHOTOS TO SEND TO IF YOU WOULD L
Mileage: 95,000
MY AIRBAGS DEPLOYED AFTER ON DAY OF DRIVING HOME FROM A DAY BABYSITTING MY NIECE AND NEPHEW I GOT HOME PARKED MY CAR IN THE GARAGE AND THAT WHOLE NIGHT FROM 11 AT NIGHT UNTILL ABOUT 330 IN THE MORNING THE LOUDEST SOUND I'VE EVER HERD THE EQUIVALENT OF A BOMB DETONATION EXPLOSION WENT OFF AND IM 10 15 FEET AWAY PAINTING MY GARAGE AND NEXT THING I KNOW I LOOK AT MY MERCEDES-BENZ CLS550 2008. ALL THE AIRBAGS IN THE ROOF AND BY THE BACK WINDOW DETONATING! I CANT UNDERSTAND WHY TO THIS DAY THE CAR WAS LOCKED KEYS WHERE IN MY ROOM IN THE HOUSE. AND I HAVE NO IDEA HOW THIS COULD OF HAPPENED. ! PLEASE GET AHOLD OF ME AT YOUR EARLIEST CONVENIENCE BECAUSE THIS IS ABSOLUTELY INSANE SOMETIMES LIKE THIS COULD HAPPEN IN A HIGH END LUXURY CAR. AGAIN IT'S A 2008 MERCEDES-BENZ CLS550. VIN# [XXX]. YOU CAN REACH ME IF YOU HAVE ANY QUESTIONS AT [XXX]. OR MY EMAIL [XXX]. THANK-YOU. THE CAR IS CURRENTLY AT ELITE MERCEDES BENZ GETTING LOOKED AT I WILL HAVE THEM SEND ME PHOTOS TO SEND TO IF YOU WOULD L
Mileage: 95,000
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ CLS550. THE CONTACT STATED THAT AT START-UP THE CHECK ENGINE WARNING LIGHT ILLUMINATED AND REMAINED ILLUMINATED. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED NOR REPAIRED. THE LOCAL DEALER WAS NOT CONTACTED OR INFORMED OF THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 100,000.
Mileage: 100,000
THE AIRBAGS LOCATED IN THE ROOF JUST DEPLOYED OUT OF NO WHERE WHEN I WAS ON MY WAY HOME FROM WORK ONLY THE 2 SIDE CURTAIN AIRBAGS
Mileage: 89,995
TL* THE CONTACT OWNS A 2008 MERCEDES-BENZ CLS550 EQUIPPED WITH CONTINENTAL EXTREMECONTACT SPORT TIRES, SIZE: 245/40/ZR18 (NA). WHILE DRIVING 45 MPH, THE TPMS WARNING INDICATOR ILLUMINATED AND THE REAR PASSENGER TIRE BLEW OUT. THE VEHICLE WAS TAKEN TO MERCEDES-BENZ OF STOCKTON (LOCATED AT 10777 TRINITY PKWY, STOCKTON, CA 95219, (209) 944-5511). THE CONTACT REQUESTED THAT THE TIRES BE REPLACED, BUT THE DEALER DECLINED TO ASSIST WITH HAVING THE VEHICLE REPAIRED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE APPROXIMATE VEHICLE FAILURE MILEAGE WAS 98,000 AND THE APPROXIMATE TIRE FAILURE MILEAGE WAS 2,000.
Mileage: 98,000
HAVE GOTTEN AIRBAG CODE B9223. DRIVERS SIDE IGINITION SQUIB RESISTED CENTER IS HIGH R12/9 MESSAGE. TOOK IT TO.LOCAL.MB DEALER AND THEY WANT $1800 TO FIX A AIRBAG PROBLEM, WHICH IS SOMETHING THAT SHOULD BE DEFECT FREE REGARDLESS OF WARRANTY. THIS IS AN ONGOING ISSUES WITH MB AND IT HONESTLY SEEMS THAT THIS IS DONE DELIBERATELY TO GENERATE REVENUE BY SELLING SERVICE FOR ALMOST $2000 TO REPLACE A $50 CONNECTOR THEY KNOW IS MANUFACTURED IN A SUBPAR FASHION, EXPECTING IT TO FAIL. MB HAS FAILED MYSELF AND COUNTLESS OTHERS WITH THIS ONE SIMPLE PROBLEM. THERE NEEDS TO BE A RECALL AND THEY SHOULD BE FORCED TO FIX THIS PROBLEM FOR THEIR CUSTOMERS. PEOPLES LIVES ARE AT STEAK.
Mileage: 75,000
PLEASE ADVISE OF ANY MERCEDES BENZ RECALLS ON AIR SUSPENSION ISSUE WITH CLS CLASS VEHICLES, IN PARTICULAR, CLS550 MODEL. THERE SEEMS TO BE A RECURRING ISSUE WITH LEAK OR MALFUNCTION WITH HYDRAULIC AIR SUSPENSION CAUSING VEHICLE TO LEAN TO ONE SIDE AND INCUR WARNING OF "STOP VEHICLE IS TOO LOW".
Mileage: 230,000
PARKING BRAKE INOPERATIVE AND A YELLOW PARK TRIANGLE WARNING AT LEFT CORNER OF THE DASHBOARD DISPLAY.
Mileage: 80,000
I WAS DRIVING G THROUGH A PARKING LOT WHEN THE SERPENTINE BELT BROKE. NATURALLY, THE CAR BECAME DIFFICULT TO STEER BUT MANAGEABLE. AS I ATTEMPTED TO TURN INTO A PARKING SPOT I HEARD A 'POP' UNDER THE HOOD. WHEN THIS OCCURRED, THE WHEEL WENT INTO A FREE SPIN. THERE WAS NO INPUT FROM THE STEERING WHEELS TO THE RACK AND PINION. UPON INVESTIGATION I FOUND THE LOWER STEERING SHAFT BROKEN ABOUT 2 INCHES ABOVE THE RACK SPLINE. THE STEERING SHAFT WAS BROKEN IN TWO. THE INCREASED FORCE REQUIRED TO TURN THE WHEEL WAS TOO MUCH FOR THE SHAFT TO HANDLE. *TR
Mileage: 65,000
I WAS DRIVING G THROUGH A PARKING LOT WHEN THE SERPENTINE BELT BROKE. NATURALLY, THE CAR BECAME DIFFICULT TO STEER BUT MANAGEABLE. AS I ATTEMPTED TO TURN INTO A PARKING SPOT I HEARD A 'POP' UNDER THE HOOD. WHEN THIS OCCURRED, THE WHEEL WENT INTO A FREE SPIN. THERE WAS NO INPUT FROM THE STEERING WHEELS TO THE RACK AND PINION. UPON INVESTIGATION I FOUND THE LOWER STEERING SHAFT BROKEN ABOUT 2 INCHES ABOVE THE RACK SPLINE. THE STEERING SHAFT WAS BROKEN IN TWO. THE INCREASED FORCE REQUIRED TO TURN THE WHEEL WAS TOO MUCH FOR THE SHAFT TO HANDLE. *TR
Mileage: 65,000
LEAKING FUEL AROUND THE FUEL SENDING UNIT UNDER REAR SEAT BEHIND DRIVER, FILLING THE PASSENGER COMPARTMENT WITH GASOLINE FUMES, AFTER FILLING THE CAR UP WITH GASOLINE.
Mileage: 112,000
WHILE APPROACHING INTERSTATE ON RAMP BEGAN TO HEAR A LOUD WHISTLING SOUND COMING FROM THE FRONT LEFT WHEEL WELL. I PULLED OVER AND FOUND THE LEFT FRONT SUSPENSION BEGINNING TO SINK. THE STRUT LOWER TO A POINT WHERE THE BODY OF THE CAR WAS ONLY 2-3 INCHES ABOVE THE TIRE. WHEN I CHECKED THE DASHBOARD INDICATORS I HAD AN ERROR LIGHT INDICATING THAT THE VEHICLE WAS TOO LOW TO DRIVE. *TR
Mileage: 63,500
I PULLED INTO A SERVICE STATION TO FILL MY TANK. AFTER ADDING FUEL TO CAPACITY I BEGAN TO SMELL FUEL IN THE PASSENGER COMPARTMENT. I ATTRIBUTED THE SMELL TO POSSIBLY SPILLING FUEL ON MYSELF. I DROVE THE VEHICLE TO WORK AND THEN HOME. THE NEXT MORNING I CONTINUED TO SMELL FUEL IN THE PASSENGER COMPARTMENT. I TOOK THE VEHICLE TO THE DEALER FOR DIAGNOSIS AND WAS TOLD THAT THERE WAS A LEAK IN THE TANK THAT WAS SPLASHING / VENTING INTO THE PASSENGER COMPARTMENT. THE SERVICE TECHNICIAN SHARED THAT THIS WAS A COMMON PROBLEM WITH THE CLS. *TR
Mileage: 16,000
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.