NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2020 Hyundai Sonata. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
TL* THE CONTACT OWNS A 2020 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE DOORS OPENED INDEPENDENTLY WITHOUT THE UNLOCK BUTTON BEING DEPRESSED. THE VEHICLE WAS TAKEN TO WALLACE HYUNDAI LOCATED AT (3801 SE FEDERAL HWY A, STUART, FL 34997) HOWEVER, THE MECHANIC WAS UNABLE TO DETERMINE THE CAUSE OF FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 600.
I WAS DRIVING LONG-DISTANCE ON A HIGHWAY AT APPROX 55-60 MPH. THE WHOLE TRIP THROUGH THE ARIZONA DESERT WAS MARKED BY PERIODIC RAIN, AT TIMES VERY HEAVY. IN THE VERY HEAVY BURSTS OF RAIN, THE WINDSHIELD WIPERS DID A TERRIBLE JOB. I HAVE NEVER BEEN SHOCKED BY POORLY PERFORMING WINDSHIELD WIPERS. MY COMPANION EVEN COMMENTED ON HOW UNSAFE IT IS. THE PROBLEM MAY BE TWO-FOLD: (1) IT SEEMS LIKE THE WIPERS NEEDED ONE MORE SPEED SETTINGS, A FASTER ONE. (2) THE FACTORY BLADES MAY NOT BE EFFECTIVE. THIS IS A 2 MONTH OLD CAR. IT ALSO SEEMED TO BE A PROBLEM ANYTIME I HAD TO TURN THE WIPERS ON THEIR HIGHEST SETTING EVEN LATER ON URBAN FREEWAYS - I NEEDED A HIGHER ONE. I PLAN TO REPLACE THE BLADES AND HOPE THAT HELPS. I'VE NEVER BEEN DRIVING AND FEARED I WAS IN DANGER BECAUSE OF THE WIPERS. I DON'T HAVE ANY DOCUMENTATION. NOTHING IS VISIBLY BROKEN.
WHEN IT RAINS WATER GETS INSIDE THE DOORS WHILE PARKED. ESPECIALLY THE BACK DOORS. IF IT RAINS HARD A CUP FULL OF WATER WILL COME OUT THE DOOR UPON OPENING. I'VE BEEN TOLD IT'S A DESIGN FLAW. I'VE HAD IT LOOKED AT TWICE AND IT'S STILL NOT FIXED. CUSTOMER SERVICE CAN'T HAVE SOMEONE COME OUT AND LOOK AND IT BECAUSE OF THE VIRUS, SO THERE'S NOTHING THAT THEY CAN DO.
TL* THE CONTACT OWNS A 2020 HYUNDAI SONATA. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 55 MPH, THE VEHICLE SHIFTED INTO SAFE MODE AND LOST MOTIVE POWER. THE VEHICLE WAS TAKEN TO ST. CHARLES AUTOMOTIVE LOCATED AT 5601 VETERANS MEMORIAL PKWY, ST PETERS, MO 63376, (636)441-4481 BUT WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOT CONTACTED OR INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 1,500.
Data synced from NHTSA on May 4, 2026