There are 4 stored owner reports matching the speed control & cruise leading-label group for the 2003 Toyota Prius in our NHTSA-sourced dataset. These are unverified consumer reports and may not reflect confirmed defects.
This group counts stored reports whose component label starts with one of this site's matching prefixes, ignoring case. Each matching report counts once within the group. Components mentioned later in the label or only in the narrative are not searched. How component counts work
Loaded 4 of 4 matching reports.
Open the full vehicle complaint log (all categories)CUSTOMER STATES VEHICLE BEGAN RACING WILDLY, ACTING LIKE TRANSMISSION WAS NOT ENGAGED. DRIVER STATED AS NOT DEPRESSING THE ACCELERATOR DURING THE ALLEGED EVENT. CUSTOMER WAS DRIVING ON STEEP UPHILL GRADES AT APPROXIMATELY 45 MPH. VEHICLE WAS SHUT OFF AND RESTARTED. VEHICLE PROCEEDED TO OPERATE WITH 6-7 REOCCURRENCES THROUGHOUT 100 MILES OF DRIVING AT HIGHWAY SPEEDS. CUSTOMER STATES THAT THIS HAS NEVER HAPPENED BEFORE HOWEVER 6 MONTHS EARLIER THE VEHICLE WOULD NOT START AND WOULD STALL REPEATEDLY. CUSTOMER STATES VEHICLE AS RELATIVELY TROUBLE FREE WITH A HISTORY OF ROUTINE MAINTENANCE AS WELL AS REPLACEMENT OF THE REAR WHEEL BEARINGS. (NOTE: THIS RECORD WAS RECEIVED VIA TELPHONE BY AN ODI INVESTIGATOR RATHER THAN THROUGH OUR HOTLINE OR ONLINE FORM. IT HAS BEEN ADDED TO OUR COMPLAINT FILE IN RESPONSE TO A THIRD PARTY REQUEST.) UPDATED 05/03/12*LJ UPDATED 05/04/12
TL*THE CONTACT OWNS A 2003 TOYOTA PRIUS. WHILE DRIVING AT A LOW SPEED FOUR TIMES, THE VEHICLE ACCELERATED OVER THE SPEED LIMIT. TWICE THE VEHICLE ACCELERATED ON AN ICE COVERED ROAD. THE VEHICLE ALSO ACCELERATED TWICE WHILE DRIVING OVER A POT HOLE. THE VEHICLE WAS NEVER TAKEN TO THE DEALER FOR A DIAGNOSTIC TEST. ROUTINE MAINTENANCE WAS PERFORMED AND UP TO DATE PRIOR THE VEHICLE ACCELERATING. THE VIN WAS UNKNOWN. THE FAILURE MILEAGE WAS 40,000.
2003 TOYOTA PRIUS WITH ACCELERATION AND BRAKE PROBLEMS. CUSTOMER STATED WHEN SHE RELEASED HER FOOT FROM THE BRAKE PEDAL THE VEHICLE RACED FORWARD WHILE MAKING A LOUD NOISE. THE BRAKES WERE REAPPLIED BUT IT DID NOT STOP THE VEHICLE. *KB THE CONSUMER WAS ABLE TO VEER SLIGHTLY TO THE LEFT TO AVOID AN ACCIDENT. THE VEHICLE FINALLY STOPPED AFTER LURCHING ABOUT 30 TO 40 FEET WELL BEYOND THE STOP SIGN AND INTO THE INTERSECTION. THE DEALER WAS UNABLE TO DUPLICATE THE PROBLEM. *JB
CONSUMER WAS TRAVELING AT 70MPH ON HIGHWAY WITH CRUISE CONTROL ENGAGED. WHEN DEPRESSING BRAKE PEDAL TO DISENGAGE CRUISE CONTROL THE VEHICLE SPUN OUT AND STOPPED FACING THE ONCOMING TRAFFIC.*AK
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
NHTSA source checks for this vehicle year
Checks are recorded separately for each dataset, not for the whole page. Dates use UTC. A missing check date does not mean no records exist.
Vehicle import recorded: Apr 29, 2026. This is the stored import date, not confirmation that every source was successfully refreshed.