What 383 owners told NHTSA about the 2018 Hyundai Tucson Hybrid Hev

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power. The vehicle was pulled over to the shoulder lane, engine oil was added, and the contact waited for several minutes for the vehicle to return to normal operation. There was no warning light illuminated. The vehicle was taken to be diagnosed; however, the dealer was unable to determine the cause of the failure. The dealer suggested that the contact occasionally add oil to the vehicle. The vehicle was not repaired. The contact stated that while the accelerator pedal was depressed, there was an abnormal sound coming from the engine compartment. The vehicle was taken back to the dealer, where it was diagnosed, and it was determined that the catalytic converter needed to be replaced. The vehicle was not repaired. The vehicle was taken to an independent mechanic, where it was diagnosed, and it was determined that the catalytic converter needed to be replaced and that an oil change was needed. The vehicle was repaired; however, the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 99,400.

NHTSA ODI 11717223

The contact's sister owns a 2018 Hyundai Tucson. The contact stated that while his sister was driving at an undisclosed speed, the vehicle briefly jerked and jolted, prompting her to pull over to the shoulder of the roadway to turn off the vehicle. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed failures with all four fuel injectors and the injector assembly. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the independent mechanic, who then diagnosed a failure with the catalytic converter. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 78,563.

NHTSA ODI 11695439

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving approximately 15 MPH, and slowing down to make a right turn, the vehicle almost stalled and lost power. The contact stated that the check oil warning light was flashing on and off. The contact depressed the accelerator pedal, and the vehicle failed to respond. The contact was able to pull over and shift into park(P). The contact had not turned the vehicle off. The contact called her father. The father arrived, and the vehicle was turned off. The contact stated that her father checked the oil dipstick and saw that the oil level was extremely low. The contact stated that two quarts of oil were added. The contact drove the vehicle to a local dealer. The dealer diagnosed and determined that a gasket on the oil filler tube was not correctly seated, and the catalytic converter needed to be replaced. The contact stated that prior to the recent failure with the catalytic converter, the catalytic converter had been replaced approximately 1 year and 8 months prior. The dealer also recommended that the engine be replaced. The vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 102,000.

NHTSA ODI 11688209

The contact owns a 2018 Hyundai Tucson. The contact stated while driving 50 MPH, the check engine warning light illuminated. The contact stated that the floorboard was vibrating, and the vehicle was losing motive power. The contact was depressing the accelerator pedal; however, the vehicle was not responding as needed. The contact stated that the failure had been recurring for several years. The vehicle was towed to the local dealer. The contact stated that the dealer diagnosed the vehicle and stated that the engine control software needed to be updated. The vehicle was repaired; however, the failure reoccurred. In the most recent failure the contact was able to drive to the same dealer. The vehicle was not diagnosed and was not repaired. The manufacturer was informed of the failure. The failure mileage was 61,211.

NHTSA ODI 11621318

The contact owns a 2018 Hyundai Tucson. The vehicle was taken to an independent mechanic for an oil change where it was determined that the vehicle was almost out of oil and there was an oil consumption failure with the vehicle. The vehicle was not repaired. The vehicle was then towed to a dealer where it was diagnosed that an oil consumption test, engine combustion cleaning, and an oil change was needed to be completed. The vehicle was repaired but the failure persisted. The manufacturer was not notified of the failure. The failure mileage was approximately 59,000.

NHTSA ODI 11598229

The contact owns a 2018 Hyundai Tucson. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The vehicle was taken to the local dealer who diagnosed that an emissions leak was present causing the engine light to illuminate; however, the cause of the emissions leak was not yet identified. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 74,000.

NHTSA ODI 11578213

The contact owns a 2018 Hyundai Tucson. The contact stated that while driving at 65 MPH, the vehicle lost motive power, prompting him to pull to the side of the roadway, where the vehicle failed to restart. No warning lights were illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the catalytic converter. The vehicle was repaired, but the failure reoccurred. The vehicle was returned to the independent mechanic, who again diagnosed a failure with the catalytic converter. The vehicle was repaired a second time, but the failure reoccurred a third time. The manufacturer was notified of the failure but was unable to provide any assistance. The failure mileage was 85,000.

NHTSA ODI 11535618

The contact owns a 2018 Hyundai Tucson. The contact stated that on various occasions while driving at an undisclosed speed, the check engine warning light illuminated. The contact stated that after taking the vehicle to an independent mechanic for a routine oil change, she was made aware of an oil leak; however, the vehicle was not diagnosed or repaired. The contact stated that the vehicle was stalling while depressing the accelerator pedal while driving at various speeds, and while driving uphill. The vehicle was taken to another independent mechanic, where it was diagnosed that there was a misfire in cylinder #1 and that the engine needed to be replaced. The contact was advised to take the vehicle to a local dealer for repair. The contact stated that after she made a local dealer aware of the failure, she was informed that the engine was discontinued and advised to contact the manufacturer for further assistance. The vehicle was not repaired. The manufacturer was made aware of the failure, and the contact was made aware that the warranty had expired and that she was responsible for the costs of the repair. The approximate failure mileage was 80,000.

NHTSA ODI 11508810