NHTSA Complaint #11447218 — 2015 HYUNDAI TUCSON

Our 2015 Tucson has the G4NC DOHC GDI engine, which unfortunately isn’t listed in any current engine settlement as of the writing of this complaint. Our engine started to rev at considerably high rpms while driving up hill, followed by a subsequent loss of power and speed. We managed to make it to the top of the hill and pull over, traversing over multiple lanes in front of on-coming semi trucks and other fast moving traffic with our hazards on. Upon pulling over, our engine died. There were no red or amber warning/caution lights on the dash, nor did the check engine light illuminate during the incident. After a few attempts at restarting the engine, we finally got it started and drove it home and brought it to the dealer the next day. They diagnosed it as a “clogged catalytic converter.” Although seemingly a secondary issue, and no further information as to what actually caused the clog in the vehicle inspection report, we reluctantly dished out the $3,200 for the repair of the vehicle we so desperately needed for work. They also installed a “knock-sensor” update. A couple months later… When driving the vehicle to work, the check engine light illuminates and flashes on and off continually. After pulling the vehicle over to a stop and consulting a Hyundai mechanic, I had the vehicle towed to a Hyundai dealership for diagnostics. Turns out the knock sensor update is what caused the engine light to illuminate to “prevent severe engine damage,” and I’m left with a large bill for engine repairs. Will the G4NC engine be investigated by the NHTSA? Will Hyundai honor my drive train warranty? Will Hyundai Corporate ever call me back? Tune in next week…