NHTSA Owner Complaint Log
This page lists owner-reported complaints filed with NHTSA for the 2018 Hyundai Sonata. Complaints are unverified consumer reports submitted to NHTSA and do not by themselves prove a defect or defect rate.
Data synced from NHTSA on May 4, 2026
WAS DRIVING A BRAND NEW HYUNDAI SONATA 2018 VEHICLE FOR A WEEK WITH 300 MILES ON IT AND WAS ABOUT TO EXIT ON A FREEWAY RAMP, BUT SUDDENLY LOST CONTROL OF THE STEERING. THE VEHICLE HAD TO BE TOWED AND WHEN THE MECHANICS AT THE HYUNDAI DEALERSHIP TOOK A LOOK AT THE VEHICLE, THEY WERE UNSURE OF HOW THE LOWER ARM ASSEMBLY ON THE FRONT DRIVER'S SIDE (FRONT SUSPENSION CONTROL ARM) WITH THE BALL AND JOINT CONNECTION WAS DISCONNECTED, WITHOUT HAVING ANY SCUFFS/SCRATCHES ON THE ARM ASSEMBLY OR FRONT BUMPER IF SOMETHING WERE TO HAVE BEEN RUN OVER, BUT HYUNDAI REFUSES TO ADMIT ANY FAULT AND DISREGARDS ANY POSSIBILITIES OF PRODUCT ISSUES AND PUTS THE BLAME ON DRIVER. THE PICTURES TAKEN SHOW NO SCRATCHES OR SCUFF MARKS DIRECTLY TO THE CONTROL ARM, NOR THE BUMPER OF THE VEHICLE, WHICH DENIES THAT A COLLISION COULD HAVE RESULTED IN THE DAMAGE, YET HYUNDAI BELIEVES THAT THERE WAS A COLLISION PER THE DRIVER THAT CAUSED THE DAMAGE. THIS IS A SERIOUS ISSUE ESPECIALLY SINCE IT OCCURRED WHILE THE VEHICLE WAS IN MOTION. HAVE BEEN TRYING TO UNDERSTAND HOW THIS HAPPENED, BUT HYUNDAI ONLY PROVIDES VAGUE RESPONSES TO CLAIMS AND QUESTIONS AND FAILS TO PROVIDE ANY SOLID EXPLANATIONS REGARDING THE ACTUAL ISSUE OF THE LOWER CONTROL ARM ASSEMBLY AND SIMPLY DICTATED THE RESULTS OF THEIR INSPECTION AS "NO ISSUES WITH THE BRAKING OR STEERING SYSTEMS" WHEN I SPECIFICALLY HAD AN ISSUE WITH THE LOWER ARM ASSEMBLY PART. CURRENTLY HAVE AN ON-GOING CASE WITH HYUNDAI CONSUMER AFFAIRS (#10727408) WITH NO HELPFUL OR ACCURATE EXPLANATIONS OR ACKNOWLEDGMENT OF THE SAFETY ISSUE AT HAND FROM HYUNDAI.
THE HEADLIGHTS ON MY 2018 HYUNDAI SONATA LIMITED HAVE CONDENSATION IN THEM. IT HAS BEEN THERE FROM THE DAY I BOUGHT THE CAR ON 10/1/18. THAT DAY THE DEALERSHIP TOOK PICTURES TO SEND TO HYUNDAI AND 1 MONTH LATER REPLACED THE HEADLIGHTS. BUT THE NEW HEADLIGHTS WERE WORSE THAN THE ORIGINAL AND THE DAY AFTER THEY WERE INSTALLED I RETURNED TO THE DEALERSHIP WHERE THE PARTS MANAGER TOOK MORE PICTURES FOR HYUNDAI. I SPOKE WITH SOMEONE FROM HYUNDAI DIRECTLY WHO IS MY CONTACT REGARDING THIS PROBLEM. I WAS ADVISED HYUNDAI IS TRYING TO FIGURE OUT THE PROBLEM AND WHILE THEY DO I AM STILL WAITING FOR NEW HEADLIGHTS. I HAVE FOUND OTHER CARS IN MY AREA WITH THE SAME PROBLEM. AT NIGHT THE MOISTURE COVERS A GOOD PORTION OF THE GLASS GIVING A DISTORTION TO THE PROJECTED HEADLIGHT BEAM. I FEEL THIS IS A SAFETY ISSUE NOT JUST DURING GOOD WEATHER, BUT ESPECIALLY IN BAD WEATHER.
CAR WILL NOT START WHEN KEY TURNED IN IGNITION WITH NO SOUND WHEN THE WEATHER IS UNDER 30 DEGREES. HAD IT IN THE DEALER LAST WEEK AND THEY COULD NOT FIND THE PROBLEM. STILL HAPPENING SO ITS BACK IN THE DEALER FOR 3 CONSECUTIVE DAYS AND I CANNOT TALK WITH ANYONE IN THE SERVICE DEPARTMENT. PHONE JUST RINGS THEN CUTS OFF. HAVE DONE RESEARCH AND FOUND OTHER 2018 SONATA ES OWNERS WITH THE SAME PROBLEM AND THE SOLUTION HAS BEEN THE IGNITION STARTER AND SOLENOID. WHEN REPLACED THE STARTING PROBLEM WAS SOLVED. THREE DAYS NOW AND HAVE NOT HEARD FORM THE HYUNDAI REPAIR SHOP IN BOWIE, MD. STILL HAVE MY CAR. SUCH INEFFICIENTLY WITH MECHANICS NOW DAYS.