Total Complaints
11 filings
MERCEDES-BENZ 500 · model year
11 NHTSA complaints, 1 crash report for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2003MERCEDES-BENZ500 carries 11 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 1 crash, 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 2003 500 is fuel system, gasoline:storage:tank assembly with 1 filings, followed by suspension:front:springs:air suspension system (1) and tires (1). 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 2003 500. 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
11 filings
Crashes Reported
1 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY | 1 |
| SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM | 1 |
| TIRES | 1 |
| SUSPENSION:FRONT:CONTROL ARM:LOWER BALL JOINT | 1 |
| FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP | 1 |
| ELECTRICAL SYSTEM | 1 |
| SERVICE BRAKES, HYDRAULIC | 1 |
| FUEL/PROPULSION SYSTEM | 1 |
| SUSPENSION | 1 |
| FUEL SYSTEM, GASOLINE | 1 |
| SEAT BELTS | 1 |
IN JUNE 2012 THE CAR DID NOT PASS INSPECTION AND WE WERE TOLD WE NEEDED A NEW GAS CAP. WE GOT A GAS CAP AND IT PASSED INSPECTION. SINCE THEN WE HAVE HAD A STRONG FUEL SMELL WHEN THE GAS TANK IS FILLED COMPLETELY. IF WE ONLY FILL THE GAS TANK ABOUT 3/4 OR LESS, THERE IS NO GAS SMELL. WE RECENTLY HAD THE CAR SERVICED AND THE MECHANIC TOLD US THE GAS CAP NEEDED TO BE REPLACED AND A SEAL/CAP IN AN OVERFILL TANK UNDER THE REAR SEAT WAS LOOSE. WE REPLACED THE GAS CAP AGAIN AND THE CAP TO THE OVERFILL TANK WAS TIGHTENED. WE FILLED THE TANK FULL AND HAVE A VERY STRONG SMELL OF GAS SO THOSE REPAIRS DID NOT FIX THE PROBLEM. IN A REVIEW OF SOME INTERNET RESEARCH, WE SAW THAT NHTSA AND MERCEDES-BENZ WERE JOINTLY INVESTIGATING A FUEL LEAKAGE IN THE UPPER PART OF THE GAS TANK FOR E-CLASS MERCEDES PRODUCED BETWEEN 2003 - 2008. WE THINK WE HAVE ONE OF THOSE FUEL LEAKS. WE WANT TO SELL THE CAR BECAUSE WE HAVE PURCHASED ANOTHER VEHICLE BUT DO NOT WANT TO SELL IT UNTIL WE HAVE FIXED THIS FUEL
Mileage: 66,000
THE FRONT PASSENGER SEAT BELT DOES NOT EXTEND OUT AND DOES NOT WORK PROPERLY DURING HOT WEATHER. *TR
Mileage: 75,000
WAS GOING DOWN ROAD AND FRONT STRUT BOTTOMED OUT BECAUSE OF AIR BELLOW FAILURE IN AIR LEVELING SYSTEM .MANY PEOPLE HAVE HAD SAME PROBLEM! *TR
Mileage: 10,000
BROUGHT CAR IN FOR SERVICE AND ANNUAL STATE INSPECTION STICKER, WAS TOLD THAT THE GAS TANK NEEDED TO BE REPLACED DUE TO MALFUNCTION THAT ALLOWED GAS VAPORS TO ESCAPE FROM TANK. WAS TOLD THAT IT WAS NO FAULT OF MY OWN BUT TANK HAD TO BE REPLACED TO PASS INSPECTION!!! THE CAR WAS NOT MISUSED OR DRIVEN OFF ROAD OR ABUSED, OBVIOUSLY THIS WAS A DEFECTIVE PART MERCEDES PUT IN THEIR CARS AND THEY CHOSE NOT TO STAND BEHIND THEIR PRODUCT. CHARGED $1,400 FOR REPAIRS. *TR
Mileage: 116,322
I WAS DRIVING MY 2003 MERCEDES E500 DOWN A HILL WHEN THE BRAKES COMPLETELY FAILED. THIS OCCURRED SUDDENLY AND SIMULTANEOUSLY BY DASHBOARD LIT UP WITH WARNINGS AND ADMONISHING TO PULL OVER AND NOT DRIVE. I WAS AMAZED TO FIND OUT THAT MERCEDES HAS A 'PROGRAM' FOR THIS FAILURE BUT DOES NOT TELL CAR OWNERS ABOUT IT UNTIL IT OCCURS. I WAS ABLE TO STOP THE CAR WITH THE EMERGENCY BRAKE BUT I HAD NO OTHER BRAKING CAPABILITY. *TR
Mileage: 88,000
WHILE PARKED THE BATTERY DIED. AS A RESULT, THE VEHICLE WOULD NOT UNLOCK. *AK THE VEHICLE HAD MULTIPLE ELECTRICAL SYSTEM PROBLEMS. *NM
Mileage: 24,000
WHEN APPLYING THE BRAKES VEHICLE STALLED INADVERTENTLY. CONSUMER CONTACTED THE MANUFACTURER, WHO TOLD CONSUMER THAT THIS VEHICLE HAD RECALL REPAIRS DONE. CURRENTLY, STALLING PROBLEMS RECURRED. *AK
Mileage: 12
WHILE DRIVING THE LOWER BALL JOINTS ON THE PASSENGER SIDE SNAPPED IN HALF, CAUSING A COLLISION. CONSUMER COMPLAINED TO THE DEALER THAT THE FRONT END FELT LOOSE WHILE DRIVING. VEHICLE WAS TAKEN TO THE DEALERSHIP THREE TIMES. THERE WERE NO INJURIES.*AK
Mileage: 12,895
ON 2/13/04 MY WIFE WHO IS 8 MONTHS PREGNANT WAS GOING HOME AFTER A DOCTORS APPOINTMENT WHEN SHE EXPERIENCED A FLAT TIRE IN HER 2003 MERCEDES C240 ON I 75 GOING SOUTH NEAR ARVIDA PARKWAY EXIT, SHE IMMEDIATELY PULLED OFF TO THE SIDE OF THE RODE AND PROCEDED TO CALL ROADSIDE ASSISTANCE FROM MERCEDES, THEY ADVISED HER NOT TO MOVE THE CAR ANY FURTHER AND THEY WOULD DISPATCH SOMEONE IN ABOUT AN HOUR. BEING A HEAVILY TRAVELED ROAD SHE WAS CONCERNED DUE TO THE AMOUNT OF TRAFFIC AND HER BEING RIGHT ON THE SHOULDER, SHE THEN CONTACTED ME AS I WAS ON MY WAY TO WORK LEAVING THE SAME DOCTORS APPT, I PROCEDED TO HEAD TO HER ASSISTRANCE AND ADVISED HER TO PULL FURTHER OFF THE SHOULDER INTO THE GRASS WHICH SHE DID, I ARRIVED TO HER LOCATION APPROXIMATLY 45 MIN LATER AND THERE WAS STILL NO ASSISTANCE THERE, ABOUT 30 MIN AFTER I ARRIVED ONE OF THE I75 ROAD RANGERS ARRIVED AND HELPED CHANGE THE TIRE WHICH WAS A MICHELEN MXV4 PLUS RADIAL XSE4, AFTER THE TIRE WAS REPLACED WE WERE PROCEDING TO THE MERCEDES
Mileage: 19,500
CONSUMER COMPLAINED ABOUT AN AIR SUSPENSION PUMP PROBLEM. THIS DEFECT CAUSED THE VEHICLE TO DROP DOWN, CUTTING ALL FOUR TIRES. CONSUMER TOOK THE VEHICLE TO THE DEALER. HOWEVER, THEY WERE NOT PROVIDING MUCH INFORMATION. *AK
Mileage: 1,500
SERIOUS FUEL TANK LEAK RESULTING FROM POSSIBLE DESIGN/MANUFACTURER DEFECT OR DAMAGE IN SHIPPING REQUIRING REPLACEMENT OF TANK. MERCEDES WILL NOT ALLOW MY INVESTIGATOR TO INSPECT TANK. MR
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.