Apr 25, 2026Transmission & drivetrainSpeed controlFuel system
WHILE DRIVING ON I-81 UP A STEEP GRADE, TRUCK SUFFERED A SUDDEN POWER LOSS, WITH SPEED DROPPING TO 35 MPH FROM 65 MPH. ATTEMPTS TO REGAIN SPEED FAILED AND IT FELT LIKE TRUCK DOWNSHIFTED TO A LOWER GEAR. 35 MPH CONTINUED UNTIL I DECIDED TO USE TRUCK CRUISE CONTROL TO ATTEMPT TO GAIN SPEED. I WAS WORRIED ABOUT TRACTOR TRAILERS HITTING ME DUE TO LOW SPEED. FINALLY GOT VEHICLE TO 65 MPH BUT WOULD NOT GO ABOVE 65 MPH. RODE THAT WAY FOR 100 MILES ( TRIP HOME WAS ~ 200 MILES) FINALLY IN LIGHTER TRAFFIC WHEN I HAD TO BRAKE, I TRIED TO USE GAS PEDAL TO MAINTAIN SPEED.AND IT WORKED. RODE THE LAST 100 MILES NORMALLY. I WAS AT GREAT RISK WHEN TRUCK WENT FROM 65 MPH TO 35 MPH. THIS IS THE SECOND INCIDENT VEHICLE SUFFERED IN THE LAST 2 MONTHS.. DEALER WAS NOT ABLE TO DIAGNOISE PROBLEM. VEHICLE HAD NO WARNING LAMPS TO WARN ME IN BOTH INSTANCES.
NHTSA ODI 11733735
Jan 20, 2026Fuel system
Very strong fuel smell coming from parked vehicle after filling the Gas Tank. After driving 40 miles to remove approximately 1/4 of a the Tank, fumes are gone. 1/06/2026: Took Truck to closest Dealership. Burlington Hyundai Nj and they had it for 3 days. (The Tank was not Full) and they didn't find anything wrong. They still have not given me any documents on what the checked. They said I would get it by E-Mail. I purchased the vehicle from Hyundai of Trenton Nj and they are not getting back to me on when I can bring it in. I can not park in or even near my garage.
NHTSA ODI 11712036
Mar 17, 2025Fuel system
On [XXX] my car would not run with a half a tank of gas and 776 miles ,I allied Hyundai towing and had it towed to the nearest dealer in Springfield pa and it sat down a week or more before they looked at it ,after that they finally called and stated there was sugar in my tank ,I explained that was impossible because I have a 175 foot private drive and a dog that barks at anything I explained the gehivle has a anti theft gas cap and if the vehicle is unlocked I get texted to remind me it’s unlocked ,they told me the fuel system had to be replaced from the filter to the injectors ,that vehicle has a safe guard in the fuel tank to clog up when contaminated, I had to wait six weeks for me car and had to use my auto insurance to pay for it with 450.00 coming out of my pocket ,then again after another 800 miles it started again and this time I took it to another dealer who stated there was sugar fuel pump was bad again and that it would cost me another 1500 dollars ,I fought with them and told them about my previous problems and he repair it under warranty INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI 11648667
Sep 10, 2024EngineFuel system
My truck lost power climbing a pass. My speed dropped from 60 mph to 20 mph while on a state highway outside Yellowstone NP where traffic can be heavy. My error codes have indicated that it is a problem in the fuel injection system. I have had electrical harness on that system replaced 4 times in 6 weeks, 2 of the times took place at the dealership during repair. My truck is still not operable.
NHTSA ODI 11613896