Owner-reported issues — NHTSA
995 complaints filed with the National Highway Traffic Safety Administration for the S203 across model years 2001–2007. Federal public records, updated weekly.
| ELECTRICAL SYSTEM | 53 reports |
| ENGINE | 49 reports |
| AIR BAGS | 46 reports |
| FUEL/PROPULSION SYSTEM | 40 reports |
| UNKNOWN OR OTHER | 25 reports |
| POWER TRAIN | 22 reports |
| VISIBILITY | 19 reports |
| SEATS | 13 reports |
Selected owner reports
2001 · ENGINE AND ENGINE COOLING
I) WHEN I WAS DRIVING ALONG AND NOTICED THAT THERE WAS NO PICK UP OF POWER AT ALL AT THE INTERMIATE.THE MAXIMUM SPEED IS ABOUT 100KM/H, AND IT TOOK AN AGE TO ACCELERATE, MAXIMUM RPM DO NOT MORE THAN 2500RPM. I DROPPED IT FROM D TO 3, AND THE REVOLUTIONS PER MINUTE(RPM) INCREASED, BUT THE POWER OUTPUT DIDN'T. II) I STOPPED, PUT IT IN NEUTRAL AND FLOORED THE ACCELERATOR, AND THE ENGINE REVOLUTIONS PER MINUTE HAVE NO ISSUE TO INCREASE MORE THAN 3000RPM. III) I TURNED THE CAR OFF AND BACK ON AGAIN, AND IT APPEARED TO BE OK, JUST A BIT LESS POWER THAT I AM USED TO. *TR
2001 · SEAT BELTS
SEAT BELT LATCH INOPERATIVE. DEALER HAS BEEN UNABLE TO REPLACE IN TWO WEEKS, SAYS PART IS ON "BACK ORDER." PREVIOUSLY HAD DIFFICULTY OBTAINING WARRANTY SERVICE FOR REPLACEMENT OF TURN SIGNAL WIRING HARNESS, TOOK TWO AND A HALF MONTHS WHILE THEY "ORDERED THE PART."
2002 · SEATS
SEAT CONTROL MODULES ARE STAYING POWERED WITH THE KEY REMOVED FROM THE IGNITION IN 2001-2003 MERCEDES BENZ C320'S. IN REVIEWING OTHER OWNER COMPLAINTS ON BENZWORLD.ORG, THIS IS A COMMON PROBLEM CAUSING THE BATTERY TO DIE AND THE DRIVER TO BE STRANDED (AND POTENTIALLY WORSE PROBLEMS). MERCEDES CALABASAS CHARGED ME APPROXIMATELY $1200 TO REPLACE BOTH THE PASSENGER AND DRIVER'S SEAT CONTROL MODULE AND APPROXIMATELY $175 TO REPLACE THE BATTERY. *TR
2003 · POWER TRAIN
1) MANUFACTURE DEFECT IN POWERTRAIN SYSTEM. 2) POSSIBLE FAILURE DURING DRIVING AND POSSIBLE OVERHEAT OR UNKNOWN PROBLEM DOWN THE ROAD. 3) HAVE GIVING TO DEALER MORE THEN 5 TIMES TO FIX THE VIBRATION PROBLEM. SINCE VISIT(WITH IN WARRANTY PERIOD), DEALER HAD REPLACED LEAKING RADIATOR, ENGINE MOUNT, DRIVE SHAFT, FLASH TOURQE CONVERTER AND NEW TRANSMISSION. THE PROBLEM STILL EXIST AND EVEN THE SHOP FOREMAN SAID THIS IS NOT RIGHT....
2001 · ELECTRICAL SYSTEM
BATTERY DRAIN, SEEMS TO COME FROM DEFECT IN SEAT CONTROLLER MODULE. SEE 19 PAGES OF FORUM: HTTP://WWW.BENZWORLD.ORG/FORUMS/W203-C-CLASS/1196568-MERCEDES-C320-BATTERY-DRAIN-11.HTML MERCEDES C240 2001, BUT MANY OTHER MODELS AND YEARS AFFECTED. *TR
2001 · VEHICLE SPEED CONTROL
2001 MERCEDES C240. MY WIFE WAS DRIVING UNDER NORMAL CONDITIONS AND THE ACCELERATOR FAILED. THE ENGINE WOULD GO FULL THROTTLE WHEN IN GEAR. SHE HAD TO CALL A TOW TRUCK TO HAVE IT TOWED TO MECHANIC. HE FOUND THE CAR COMPUTER HAD SAID THE ELECTRONIC ACCELERATOR WAS BAD. A NEW ACCELERATOR WAS PUT IN AND NO MORE PROBLEM. *TR
2001 · ELECTRICAL SYSTEM
MERCEDEZ BENZ C 240 YEAR 2001 HAS MANY DEFECTS THAT REQUIRED SEVERAL THOUSANDS OF DOLLARS . THE DEALERSHIP AND THE MANUFACTURER DID NOT PROVIDE ANY HELP.*CW
2001 · ENGINE AND ENGINE COOLING
TL*THE CONTACT OWNS A 2001 MERCEDES BENZ C240. THE CONTACT STATED THAT THE CHECK ENGINE INDICATOR ILLUMINATED ON THE INSTRUMENT PANEL. THE DEALER STATED THAT THE FAILURE WAS DUE TO A CRANKSHAFT CENTER AND THERMOSTAT ISSUE. THE CRANKSHAFT CENTER CAUSED THE VEHICLE TO OVERHEAT AND IT WOULD NOT START UNTIL THE ENGINE COOLED OFF. THE DEALER STATED THAT THE REPAIR WOULD COST $700. A DIAGNOSTIC WAS PERFORMED, WHICH SHOWED THAT ADDITIONAL REPAIRS WOULD ALSO BE NEEDED. THE MANUFACTURER STATED THAT THERE WAS NO WARRANTY; THEREFORE, THE CONTACT WOULD BE RESPONSIBLE FOR THE REPAIR COST. THE FAILUR
2001 · EQUIPMENT
THE AIR CONDITIONING SYSTEM FAILED IN THE C-240, 2006. I CALLED FOR AN APPOINTMENT FOR DIAGNOSIS, AND WAS GIVEN A DATE THAT PUT THE CAR JUST OUT OF EXTENDED WARRANTY COVERAGE. I DISCOVERED THIS AFTER THE FACT. I HAD ASSUMED THAT THE AIR CONDITIONER JUST NEEDED CHARGING AGAIN, AND WOULD NOT BE COVERED. IF I HAD ANY IDEA THAT IT WAS GOING TO BE A $3,000.00 FOR REPAIRS. I WOULD HAVE RUSHED BACK IN DECEMBER 2005 WHEN THE PROBLEM STARTED WITH FOGGED WINDOWS.*AK
2001 · UNKNOWN OR OTHER
2001 C240 CEILING FABRIC SAGS. *TS THE FABRIC IN THE CONSUEMR'S DAUGHTER IN LAWS 2002 C240 ALSO SAGS ANS IS ONLY BEING HELP UP BY THE INTERIOR LIGHT***NAR***
2001 · POWER TRAIN
VARIOUS PROBLEMS WITH 2001 MERCEDES C240. *MR THE KEYLESS ENTRY REMOTE FAILED INTERMITTENTLY. THE WINDSHIELD WASHER AIMED TOO HIGH. THE FM RADIO RECEPTION WAS POOR. THE CLUTCH WAS RUBBING. THE SRS LIGHT ILLUMINATED ON THE DASH.
2001 · ELECTRICAL SYSTEM
STEERING WHEEL LOOSE AND MAKING NOISE WHEN TURNING RIGHT OR LEFT, DEALER FOUND POWER STEERING PUMP LEAKING AND WAS REPLACED. NEXT DAY ENGINE LIGHT ON,ABS SYSTEM FAILS, ESP ELEC,STABILITY,PROGRAM FAILS, BAS BRAKE ASSIST SYSTEM FAILS, THE CAR DOES NOT CHANGE GEAR AND WOULD NOT PICK UP SPEED EVENTHOUGH I'M PRESSING HARD ON THE GAS PEDAL. DEALER ATTEMPTED FIXING THE PROBLEM 4X AND STILL THERE FOR THE 5TH TIME. EACH TIME THEY FIND DIFFERENT CAUSES LIKE CRACKED THRUST ARMS AND WAS REPLACED. THEN THEY SAID THERE'S AN OPEN CIRCUIT AT THE RIGHT SPEED CENSOR AND THEY REPLACED RIGHT REAR SPEED SENSOR.AN
Source: NHTSA consumer complaint database · synced 2026-09-21