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What 253 owners told NHTSA about the 2012 Hyundai Tucson Fuel Cell

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (253)Crash / fire / injury (28)Engine (158)Brakes (35)Transmission & drivetrain (26)Electrical system (17)Engine & cooling (10)Body & structure (9)Speed control (9)Airbags (6)Steering (6)Wheels (5)

Newest first · 253 complaints · page 11 of 11

Dec 21, 2011Engine & coolingTransmission & drivetrainElectrical system

BRAND NEW CAR- A FEW DAYS AFTER PURCHASING AND DRIVING THE CAR, NOTICED CAR WAS NOT DRIVING RIGHT. SEVERAL SYMPTOMS BECAME NOTICEABLE. CAR WOULD JERK WHEN ACCELERATING AND BRAKING. CARS PICK UP WAS DELAYED AND HAD A VERY UNCOMFORTABLE VIBRATION, WHILE IN IDLE AND WHILE DRIVING, TO THE POINT OF GETTING NAUSEOUS WHILE DRIVING IN THE CAR. TOOK CAR TO HYUNDAI SERVICE AND TOLD THEM OF SYMPTOMS AND MY CONCERNS OF SOMETHING NOT RIGHT WITH THE CAR. THE MECHANICS FELT THE PROBLEMS I EXPLAINED ABOVE AND SAID SOMETHING WAS WRONG, NOW HAD TO FIGURE OUT WHAT EXACTLY. SEVERAL TESTS WERE DONE ON THE CAR BUT NOTHING SHOWED UP ON ELECTRICAL GRID. SERVICE HAD TO CALL A HIGHER TECH OUT IN CALIFORNIA TO SEE WHAT TO DO NEXT. CALIFORNIA TECH MADE THEM RUN SEVERAL TESTS, ALL THIS TOOK MORE THEN 2 WEEKS UNTIL THEY FINALLY FIGURED OUT THAT THE ENGINES THROTTLE ASSY WAS DEFECTIVE AND NOT FUNCTIONING PROPERLY. THEY SAID THAT THIS ALSO CAUSED THE SENSOR TO MALFUNCTION. THEY REPLACED THE THROTTLE ASSY AND CLAIM THE CAR IS REPAIRED. NO LONGER TRUST CAR IS SAFE TO DRIVE DUE TO THE ELECTRICAL AND ENGINE DEFECTS THAT WHERE FOUND AFTER THE ORIGINAL INSPECTIONS BY THE MANUFACTURE AND THE DEALERSHIP FAILED TO FIND THESE DEFECTS WITH THE CAR AND SOLD IT. *TR

NHTSA ODI 10440922

Dec 6, 2011Transmission & drivetrainCrash

TL* THE CONTACT OWNS A 2012 HYUNDAI TUCSON. THE CONTACT STATED THAT AFTER PLACING HER VEHICLE IN PARK AND EXITING THE VEHICLE, IT ROLLED BACKWARD AND CRASHED INTO A BUS. NO POLICE WERE CONTACTED. THE VEHICLE WAS TAKEN TO THE DEALER WHERE THEY ADVISED HER THAT THEY WERE UNABLE TO DIAGNOSE THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND THEY OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS APPROXIMATELY 1,000.

NHTSA ODI 10438750

Sep 6, 2011Engine & cooling

TL* THE CONTACT OWNS A 2012 HYUNDAI TUCSON. THE CONTACT STATED THAT THE VEHICLE WOULD NOT START, EVEN AFTER THE FUEL TANK WAS FILLED TO CAPACITY. SHE HAD TO APPLY PRESSURE TO THE BRAKE AND ACCELERATOR PEDALS IN ORDER TO START THE VEHICLE. THE DEALER MADE THREE ATTEMPTS TO DUPLICATE THE FAILURE. THE MANUFACTURER HAD NOT BEEN NOTIFIED NOR WAS THE VEHICLE REPAIRED. THE CURRENT MILEAGE WAS 1,304. THE APPROXIMATE FAILURE WAS 1,000.

NHTSA ODI 10423888

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Working with the data? Download all 253 complaints as CSV · fetched from NHTSA July 25, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2012 Hyundai Tucson Fuel Cell verdict →