NHTSA owner reports · September 18, 2026 snapshot.
What owners actually said
80 reports64,000 miles · Jul 28, 2014
Engine
TL* THE CONTACT OWNS A 2003 MERCEDES BENZ SL 500. THE CONTACT STATED THAT THE VEHICLE STALLED WHILE DRIVING OVER A WATER PUDDLE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO REPLACED THE OIL PAN, VALVE COVER, AND ENGINE. THE VIN WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 64,000.…
Read full complaint
TL* THE CONTACT OWNS A 2003 MERCEDES BENZ SL 500. THE CONTACT STATED THAT THE VEHICLE STALLED WHILE DRIVING OVER A WATER PUDDLE. THE VEHICLE WAS TAKEN TO A PRIVATE MECHANIC WHO REPLACED THE OIL PAN, VALVE COVER, AND ENGINE. THE VIN WAS NOT AVAILABLE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 64,000.
NHTSA ODI #10616776
Mileage unknown · Jun 25, 2014
Electrical SystemService Brakes, Hydraulic
2003 MERCEDES BENZ SL 500. CONSUMER WRITES IN REGARDS TO POSSIBLE FATAL FLAW IN VEHICLE. *SMD THE CONSUMER STATED, AS HE WAS BACKING OUT OF HIS DRIVEWAY, HE APPLIED THE BRAKE AND THEY FAILED. A RED LIGHT AND A SIGN INSTRUCTED HIM TO OBTAIN IMMEDIATE SERVICE. THE MECHANIC, KEPT THE VEHICLE FOR A WEEK, BUT WAS UNABLE TO ANYTHIN…
Read full complaint
2003 MERCEDES BENZ SL 500. CONSUMER WRITES IN REGARDS TO POSSIBLE FATAL FLAW IN VEHICLE. *SMD THE CONSUMER STATED, AS HE WAS BACKING OUT OF HIS DRIVEWAY, HE APPLIED THE BRAKE AND THEY FAILED. A RED LIGHT AND A SIGN INSTRUCTED HIM TO OBTAIN IMMEDIATE SERVICE. THE MECHANIC, KEPT THE VEHICLE FOR A WEEK, BUT WAS UNABLE TO ANYTHING WRONG WITH THE BRAKES. AT THE MECHANIC'S SUGGESTED, THE VEHICLE WAS TOWED TO THE DEALER. AFTER THE VEHICLE WAS THERE FOR A FEW DAYS, THE DEALERSHIP CALLED AND SAID THE PROBLEM WAS THE BATTERY HAD DIED. IT WAS A SECONDARY BATTERY WHICH SUPPLIED POWER TO EVERYTHING THAT CONSUMED ELECTRICITY, INCLUDING THE BRAKES IN HIS MODEL AND YEAR VEHICLE. SO, IF IT FAILED, SO WOULD THE BRAKES. *JB
NHTSA ODI #10604251
62,859 miles · May 27, 2014
Suspension
ABC ACTIVE BODY CONTROL SYSTEM FAILED RESULTING IN A DROP ON THE DRIVER SIDE. MERCEDES MECHANIC SAID THAT THIS HAS BEEN A DEFECT AND REGULAR ISSUE WITH 2003 SL500 WHERE THERE IS EITHER A LEAK IN ONE OR MORE STRUTS OR THE PUMP FAILURE; BUT YET MERCEDES IS NOT TAKING ACCOUNTABILITY FOR THIS DEFECT. AFTER RESEARCHING THIS ON THE IN…
Read full complaint
ABC ACTIVE BODY CONTROL SYSTEM FAILED RESULTING IN A DROP ON THE DRIVER SIDE. MERCEDES MECHANIC SAID THAT THIS HAS BEEN A DEFECT AND REGULAR ISSUE WITH 2003 SL500 WHERE THERE IS EITHER A LEAK IN ONE OR MORE STRUTS OR THE PUMP FAILURE; BUT YET MERCEDES IS NOT TAKING ACCOUNTABILITY FOR THIS DEFECT. AFTER RESEARCHING THIS ON THE INTERNET, IT IS CLEAR THAT THIS HAS BEEN AN ISSUE NOT ONLY IN US BUT AROUND THE WORLD AND MERCEDES HAS NOT ADDRESSED THIS ISSUE BECAUSE THEY ARE MAKING THOUSANDS OF DOLLARS REPAIRING THIS DEFECT PER VEHICLE. PLEASE LOOK IN TO THIS ISSUE. JUST GOOGLE 2003 MERCEDES BENZ SL500 ABC AND YOU WILL SEE FOR YOURSELF HOW MANY INDIVIDUALS HAVE HAD THE ABC ISSUE. *TR
NHTSA ODI #10594192
74,000 miles · May 16, 2014
Fuel System, GasolineStructure
I OWN A 2003 MERCEDES BENZ SL500. LIKE MOST OWNERS OF THIS VEHICLE, THE BAFFLE MOVES FREELY WITHIN THE GAS TANK WHICH CAUSES A NOISE AND IS POTENTIAL DANGEROUS IF A SPARK IS CREATED FROM THE BAFFLE HITTING THE INSIDE WALLS OF THE GAS TANK. FROM MY RESEARCH IT IS A MANUFACTURE ISSUE WITH THE WELDING OF THE BAFFLE TO THE INTERNAL …
Read full complaint
I OWN A 2003 MERCEDES BENZ SL500. LIKE MOST OWNERS OF THIS VEHICLE, THE BAFFLE MOVES FREELY WITHIN THE GAS TANK WHICH CAUSES A NOISE AND IS POTENTIAL DANGEROUS IF A SPARK IS CREATED FROM THE BAFFLE HITTING THE INSIDE WALLS OF THE GAS TANK. FROM MY RESEARCH IT IS A MANUFACTURE ISSUE WITH THE WELDING OF THE BAFFLE TO THE INTERNAL WALL OF THE GAS TANK. THERE IS A TREMENDOUS AMOUNT OF COMPLAINTS AND THREADS ON MERCEDES FORUMS. PLEASE FOLLOW LINK TO SEE ALL COMPLAINTS. IT IS POOR CUSTOMER SERVICE AND ACCOUNTABILITY FROM MERCEDES BENZ USA TO NOT RECALL THE ISSUE. THERE IS OVER 20 PAGES OF COMPLAINTS REGARDING THIS ISSUE AT THIS LINK: HTTP://WWW.BENZWORLD.ORG/FORUMS/R230-SL-CLASS/1295215-SL500-NOISE-REAR-INTERIOR-WALL-GAS.HTML. *TR
NHTSA ODI #10588940
224,679 miles · May 6, 2014
Service Brakes
TL* THE CONTACT OWNS A 2003 MERCEDES BENZ SL500. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, HE ATTEMPTED TO ENGAGE THE BRAKES BUT THE PEDAL SANK TO THE FLOORBOARD ABNORMALLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TECHNICIAN DIAGNOSED THAT THE BRAKE LINES NEEDED TO BE BLED AND THE BRAKE FLUID NEEDED TO BE REPLACED. ALS…
Read full complaint
TL* THE CONTACT OWNS A 2003 MERCEDES BENZ SL500. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, HE ATTEMPTED TO ENGAGE THE BRAKES BUT THE PEDAL SANK TO THE FLOORBOARD ABNORMALLY. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THE TECHNICIAN DIAGNOSED THAT THE BRAKE LINES NEEDED TO BE BLED AND THE BRAKE FLUID NEEDED TO BE REPLACED. ALSO, THEY ADVISED THAT THE BRAKE HYDRAULIC UNIT NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 224,679.
NHTSA ODI #10586788
96,935 miles · May 5, 2014
Service Brakes
WHILE DRIVING AT APPROX. 20-35MPH I PRESSED THE BRAKE AND ALMOST WENT TO THE FLOOR WITH NO RESISTANCE. DASHBOARD INDICATES RED WARNING "STOP" BRAKE DEFECTIVE, STOP VEHICLE WITH YELLOW ABS WARNING LIGHT. AFTER I PULLED OVER, PARKED THE CAR AND SHUTTING DOWN THE ENGINE... WARNING LIGHTS, RED EMERGENCY "BRAKE" ILLUMINATED. AS WELL …
Read full complaint
WHILE DRIVING AT APPROX. 20-35MPH I PRESSED THE BRAKE AND ALMOST WENT TO THE FLOOR WITH NO RESISTANCE. DASHBOARD INDICATES RED WARNING "STOP" BRAKE DEFECTIVE, STOP VEHICLE WITH YELLOW ABS WARNING LIGHT. AFTER I PULLED OVER, PARKED THE CAR AND SHUTTING DOWN THE ENGINE... WARNING LIGHTS, RED EMERGENCY "BRAKE" ILLUMINATED. AS WELL AS, REDUCED BRAKE EFFECT, START ENGINE AND FOLLOWED BY INCR BRAKING DISTANCE, START ENGINE. *TR
NHTSA ODI #10586487
47,000 miles · Jan 28, 2014
Electrical SystemService Brakes
WHILE DRIVING TO WORK, I WAS GOING ABOUT 35 MPH WHEN THE DASH LIGHTS UP RED SAYING "SERVICE BRAKES, STOP VEHICLE, ETC". MY MECHANIC LOOKED OVER EVERYTHING TO DO WITH BRAKES AND COULD NOT FIX IT. HE CALLED MERCEDES OF TALLAHASSEE AND WAS TOLD IT WAS AN ELECTRICAL ISSUE THAT WAS A COMMON PROBLEM WITH THIS VEHICLE. IT DID HAVE A…
Read full complaint
WHILE DRIVING TO WORK, I WAS GOING ABOUT 35 MPH WHEN THE DASH LIGHTS UP RED SAYING "SERVICE BRAKES, STOP VEHICLE, ETC". MY MECHANIC LOOKED OVER EVERYTHING TO DO WITH BRAKES AND COULD NOT FIX IT. HE CALLED MERCEDES OF TALLAHASSEE AND WAS TOLD IT WAS AN ELECTRICAL ISSUE THAT WAS A COMMON PROBLEM WITH THIS VEHICLE. IT DID HAVE A RECALL ON IT, BUT IT EXPIRED IN JULY LAST YEAR, JUST MY LUCK. SO I GOOGLED IT AND HAVE NOW FOUND TONS OF PEOPLE WITH THE SAME EXPERIENCE! HOW CAN THE VEHICLE SAFETY ADMINISTRATION LEGALLY ALLOW MERCEDES BENZ TO CONTINUE LETTING THIS HAPPEN TO PEOPLE? HOW MANY ACCIDENTS MUST TAKE PLACE, OR GOD FORBID DEATHS BEFORE SOMETHING IS DONE? I HAVE NO OPTION BUT TO PAY OUT OF POCKET TO HAVE THIS PIECE OF $100K JUNK FIXED AND PRAY IT NEVER HAPPENS AGAIN! MERCEDES BENZ AND THE VEHICLE SAFETY ADMINISTRATION BETTER PRAY THIS DOESN'T CAUSE AN ACCIDENT OR I WILL SUE THE [XXX] OUT OF BOTH! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
NHTSA ODI #10561822
59,000 miles · Nov 19, 2013
Seat Belts
TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SL500. THE CONTACT STATED THAT WHILE THE VEHICLE WAS BEING INSPECTED BY THE DEALER, IT WAS FOUND THAT THE SRS WAS NOT OPERATING PROPERLY AND NEEDED TO BE REPLACED. THE VEHICLE WAS BEING REPAIRED. THE MANUFACTURER WAS NOT CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY …
Read full complaint
TL* THE CONTACT OWNS A 2003 MERCEDES-BENZ SL500. THE CONTACT STATED THAT WHILE THE VEHICLE WAS BEING INSPECTED BY THE DEALER, IT WAS FOUND THAT THE SRS WAS NOT OPERATING PROPERLY AND NEEDED TO BE REPLACED. THE VEHICLE WAS BEING REPAIRED. THE MANUFACTURER WAS NOT CONTACTED ABOUT THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 59,000.
NHTSA ODI #10552966
22,500 miles · Nov 3, 2013
Suspension
MY 2003 SL 500 WITH 22,500 MILES IS DANGEROUSLY UNSTEADY AND PULLS TO THE RIGHT ALSO HAS A KNOCK IN THE RIGHT REAR. I TOOK IT TO THE LOCAL DEALER AND THEY REPLACED THE FLUID IN THE ABC SYSTEM FOR $300 +. IT DID NOT HELP. THEY SAY THAT THEY CAN BEGIN REPLACING PARTS IN EACH WHEEL AT $2000 PER WHEEL AND SEE IF IT WORKS, BUT NO GUA…
Read full complaint
MY 2003 SL 500 WITH 22,500 MILES IS DANGEROUSLY UNSTEADY AND PULLS TO THE RIGHT ALSO HAS A KNOCK IN THE RIGHT REAR. I TOOK IT TO THE LOCAL DEALER AND THEY REPLACED THE FLUID IN THE ABC SYSTEM FOR $300 +. IT DID NOT HELP. THEY SAY THAT THEY CAN BEGIN REPLACING PARTS IN EACH WHEEL AT $2000 PER WHEEL AND SEE IF IT WORKS, BUT NO GUARANTEE. IT APPEARS THAT THEY DON'T HAVE A CLUE. I HAVE CONTACTED MERCEDES HELP LINE BUT THEY JUST SAID TO TAKE IT TO THE DEALER. I BOUGHT THIS CAR NEW IN 2003 FOR MY WIFE AND EXPECTED IT TO LAST A LONG TIME AND SHE WILL NOT DRIVE IT ANYMORE. HERE I HAVE $100,000 CAR THAT IS LIKE NEW INSIDE AND OUT THAT IS NOT DRIVABLE. MERCEDES SHOULD BE ASHAMED OF THEMSELVES FOR NOT BACKING UP THEIR PRODUCT. I HAVE HAD 9 MERCEDES STARTING WITH A 1962 DIESEL SEDAN BUT I WILL NEVER, EVER BUY ANOTHER AND I SPREAD THE WORD TO EVERYONE I SEE INTERESTED IN BUYING AN EXPENSIVE CAR. *TR
NHTSA ODI #10550685
41,000 miles · Oct 24, 2013
Fuel System, Gasoline
THE BAFFLE INSIDE THE GAS TANK HAS COME LOOSE AND IS HITTING THE INSIDE OF THE TANK. THE ONLY TIME IT ISN'T NOISY IS WHEN THE TANK IS FULL. AFTER CONTACTING MERCEDES OF UTAH, THEY ADVISED THEY HAVEN'T HEARD OF THE PROBLEM. I DON'T KNOW IF THERE IS A SAFETY ISSUE WITH THE BAFFLE BEING LOOSE BUT IT IS A GREAT CONCERN TO ME. *TR
NHTSA ODI #10549378