There are 7 owner-reported speed control & cruise complaints for the 2001 Hyundai Sonatain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
AS I WAS DRIVING DOWN THE ROAD AT APPRX 30 MPH. THE CAR WOULD DE CELERATE. I WOULD HAVE TO TAKE MY FOOT OFF THE GAS AND THEN PUT BACK ON TO GET THE CAR TO MOVE. ALSO AT THE SAME TIME THE CAR WOULD BANG INTO GEAR FROM PARK AND INTO REVERSE. I WAS TOLD IT NEEDED A NEW TRANSMISSION. THE CAR WAS PURCHASED NEW OUT OF THE SHOWROOM WITH 10 MILES ON IT AND 6 MONTHS LATER A NEW TRANSMISSION. ( WELL WE WERE TOLD AT THE TIME IT WAS BRAND NEW, I HAVE SINCE LEARNED THAT IT WAS A REBUILT) SHAME ON THE DEALER FOR LYING TO CUSTOMERS. THE CAR DID OK TILL ABOUT 3 MONTHS AGO. THE CAR WILL DECELERATE AND I HAVE TO DO WHAT I STATED ABOVE. THEN CANT GET OUT OF PARK AND THE TRACTION CONTROL LIGHT COMES ON. THIS HAS HAPPENED NUMEROUS TIMES. A NEW BRAKE SWITCH WAS PUT IN AND THE CAR WAS FINE FOR 7 FULL DAYS AND ON THE 8TH DAY SAME THING. SO BACK WE GO TO THE DEALERS AND THEY ARE REALLY RUDE AND NOT HAPPY TO SEE ME AT ALL . ( I DON'T' WANT TO SEE THEM EITHER) I WAS TOLD SAME PROBLEM AND ANOTHER SWITCH HAS BEEN PUT IN THIS IS THE THIRD ONE. THE OTHER ISSUE IS WE ARE NOT BEING NOTIFIED OF RECALLS. AND THE DEALERSHIP IS SO RUDE. WILL NEVER OWN ANOTHER ONE. *TR
TL*THE CONTACT OWNS A 2001 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 20 TO 25 MPH WHEN THE VEHICLE SUDDENLY ACCELERATED WITHOUT WARNING. EVEN AFTER APPLYING THE BRAKES IT CONTINUED TO ACCELERATE. THE DRIVER WAS ABLE TO STOP BY USING THE EMERGENCY BRAKE. THE VEHICLE WAS INSPECTED BY A INDEPENDENT MECHANIC WHO ADVISED THE CONTACT THAT HE WAS UNABLE TO DIAGNOSE THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 82,300. THE VIN WAS UNAVAILABLE.
WHILE DRIVING AT ANY SPEED VEHICLE WILL NOT ACCELERATE AND WILL SLOWDOWN RAPIDLY. CAUSE UNKNOWN. DEALER NOTIFIED.*AK
VEHICLE ACCELERATED SUDDENLY ,RESULTING IN A COLLISION, AND CAUSING MINOR INJURIES TO DRIVER. *AK CONSUMER STATES THIS ACCIDENT HAPPENED THE DAY THAT THE VEHICLE WAS GOING TO BE TAKEN TO THE DEALER FOR THIS SUDDEN ACCELERATION PROBLEM. *SLC
WHILE DRIVING RPMS GO UP HIGH, IDLE WILL NOT DROP. BEEN TO DEALER 5 TIMES FOR SAME PROBLEM. *AK
WHILE DRIVING RPMS GO UP HIGH, IDLE WILL NOT DROP. VEHICLE ACCELERATED SUDDENLY AND UNEXPECTEDLY WITHOUT WARNING. CAR DRIVES OVER 40 WITHOUT FOOT ON GAS. HARD TIME BRAKING BECAUSE ENGINE IS TOO HIGH. HAS BEEN GOING ON SINCE HAD CAR. DEALER ADJUSTED CABLE AND DIDN'T WORK. ALMOST WENT THRU DEALER WALL WHEN BRINGING IT IN FOR REPAIR. IS IN REPAIR SHOP AGAIN BECAUSE PROBLEM WAS NOT FIXED. CAR IS UNSAFE AND HAD NEAR COLLISIONS.*AK
WHEN DRIVING AND WITH NO PRIOR WARNING VEHICLE WILL START TO JERK, AND THEN IT WILL ACCELERATE. *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.
Data synced from NHTSA on Apr 25, 2026