2017 Hyundai Tucson transmission problems

Filed Oct 30, 2026 · Fuel system, Steering · CA

The issues is the engine shuts off at idle or in motion. Sometimes hard to start but it cranks over well. Then when it restarts after a shut down, three lights stay on some traction control, the steering and a picture of a car downhill with a clock or engine RPM light. No check engine light on. Then recently the tachometer doesn’t work after a shutdown then restart. But when you turn off the engine with ignition, then restart the third time. The lights all go off then the RPM gauge works. But the whole time the engine runs great. When I check ECM all is good no Fault codes, I monitor fuel pressure the low psi is 40 the high side is 999 psi. Is this a common issue with these cars?

Filed Oct 23, 2026 · Transmission · 133,000 miles · PA

The contact owns a 2017 Hyundai Tucson. The contact stated that while stopped at a stop light, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. The contact stated that the accelerator pedal was depressed to the floorboard, and the vehicle jumped forward and then stopped. The contact stated that the vehicle was stuck in the middle of a busy highway. The vehicle was coasted to the shoulder of the roadway. The vehicle was taken to the dealer, where it was diagnosed with a dual clutch failure. The contact was informed that the dual clutch needed to be replaced. The contact stated that the failure was a known failure with the vehicle. The manufacturer was made aware of the failure, and a case was filed. The contact was informed that the repair was not covered under a special coverage program. The failure mileage was approximately 133,000.

Filed Oct 21, 2026 · Electrical, Engine · FL

On [XXX], I purchased a 2017 Hyundai Tucson from DriveTime, located at 6400 Pensacola Boulevard, Pensacola, FL 32505. Within approximately nine days of purchase, the vehicle began experiencing serious mechanical problems, raising significant concerns about its safety and roadworthiness. On [XXX], the vehicle suffered a severe loss of acceleration and was unable to exceed approximately 30 mph. This sudden reduction in engine performance created a dangerous situation while driving, particularly when attempting to maintain normal traffic speeds. Following these issues, mechanical inspections revealed water inside the spark plug wells, a severely rusted ignition coil, and a failing catalytic converter. Firestone estimated the catalytic converter repair at approximately $5,000. The presence of water and corrosion raised concerns about possible pre-existing damage and whether the vehicle had been properly inspected before being sold. The vehicle remained in repair-related custody for approximately 29 days. Despite repeated communications with DriveTime, the mechanical problems were not satisfactorily resolved. DriveTime representatives informed me that a replacement vehicle had been approved. On [XXX], I returned to the dealership expecting a replacement but was informed that no suitable vehicle was available. I was left without transportation, and the dealership failed to provide a satisfactory resolution. As of October 21, 2026, I remain without a vehicle. I am requesting that the federal safety agency investigate the sudden loss of engine power, possible electrical or ignition system damage caused by moisture intrusion, and any similar safety complaints involving the 2017 Hyundai Tucson. My primary concern is that these mechanical failures could cause another driver to experience a dangerous loss of power while operating the vehicle, potentially resulting in a serious collision. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 14, 2026 · Engine, Transmission · 90,502 miles · LA

The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at 65 MPH, the vehicle unexpectedly stalled and was unable to exceed 30 MPH. The contact pulled the vehicle over to the shoulder of the road, and the vehicle failed to restart. The vehicle was towed to the dealer, where it was diagnosed that the transmission failed and oil contaminated the catalytic converter, causing the catalytic converter to fail and require replacement. The transmission was repaired by the dealer, and the catalytic converter was replaced by an independent repair facility. The contact subsequently observed continued oil loss following the repairs. The vehicle was returned to the dealer, where it was diagnosed that the exhaust manifold headers failed and required replacement. The vehicle was not repaired. The contact requested and received a complete diagnostic report from the dealer. The failure mileage was approximately 90,502.

Filed Sep 18, 2026 · Steering, Transmission · NY

The contact owns a 2017 Hyundai Tucson. The vehicle was taken to the dealer for an engine replacement due to a separate issue; however, during the service, the dealer discovered that the front axle was leaking and noted that the steering was becoming stiff. The contact had not experienced any issues prior to the vehicle being taken to the dealer. The contact stated that the dealer had damaged the vehicle during the engine replacement. The manufacturer was notified of the failure and stated that the dealer would be contacted about a courtesy repair for the axle. The dealer confirmed the failure.

Filed Jul 27, 2026 · Transmission · CA

What component or system failed or malfunctioned, and is it available for inspection upon request? **Transmission How was your safety or the safety of others put at risk? **Car stalled, no warming. Has the problem been reproduced or confirmed by a dealer or independent service center? **Yes, J&M Transmission in Tracy, Ca Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? **Yes, car was taken in for repair where input shaft speed sensors were replaced. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? **No warning lights appeared at time of malfunction/ stall. J&M later reported check engine light was on when running tests.

Filed Jul 19, 2026 · Engine, Fuel system · CO

The Core Symptoms: "The high-pressure fuel pump is leaking internally. Raw gasoline is flooding into the engine oil crankcase, causing severe fuel dilution. The engine air filter is physically soaked in raw fuel and smells strongly of gasoline." My engine is always extremely hot after I have only went 15 mins away from home. Sometimes takes over two hours to cool down. The Safety Risk: "When attempting to accelerate, the vehicle experiences severe fuel starvation, causing the engine to bog down and act like it is going to stall in the middle of traffic, creating a severe crash hazard. Additionally, there is a loud 'popping' sound/mini-backfire upon turning the vehicle off due to unburnt fuel vapors, presenting a high risk of an underhood engine fire. I have only 83,000 miles on my car.

Filed May 12, 2026 · Acceleration, Transmission · GA

The vehicle has experienced life-threatening safety defects during operation; shaking, hesitation, and stalling in high-speed traffic. The vehicle unexpectedly stalled/lost power while driving, putting myself and others in direct risk of collision. The Hyundai dealership claimed it needed an Actuator Gasket replacement, Throttle Body replacement, and ECM/TCM update. The vehicle had NO warning lights until after it stalled, then warning lights illuminated briefly. The Hyundai dealership claimed repairs were "completed" 5/8/26; within 72 hours of "completion" the vehicle's symptoms reappeared. The Hyundai Executive Case Manager has made NO efforts to resolve this LIFE-THREATENING SAFETY issue. This has put myself and children in danger and is legally unsafe to drive.

Filed Mar 7, 2026 · Engine, Fuel system · SC

While driving on the interstate at highway speed, my 2017 Hyundai Tucson lost power without any warning lights or prior symptoms. The vehicle experienced an immediate loss of propulsion while I was traveling in traffic, creating a dangerous situation because surrounding vehicles were also moving at highway speed & I had to quicky maneuver the vehicle to the shoulder with no power. The vehicle had approximately 73,861 miles at the time of the failure. After the incident, the vehicle was taken to a Hyundai dealership and diagnosed with a burned exhaust valve requiring replacement of the cylinder head & valve. The estimated cost of repair provided by the dealership was approximately 7550. The vehicle had no prior warning lights or symptoms before the sudden loss of power. A sudden engine failure resulting in loss of propulsion at highway speed presents a serious safety risk to both the driver and surrounding traffic. This was an extremely dangerous failure.

Filed Feb 6, 2026 · Engine, Fuel system · IN

Car engine seized and lost ALL power going 60mph down the highway at night with my child in the back seat. I have poured quarts and quarts of oil in this vehicle because it burns oil at an alarming rate until it eventually runs dry and the engine seizes. This is extremely dangerous and luckily my child and I were able to drift to the side of the road without harm and injury. Very discouraging that there are thousands of these cars and engines on the road that can literally seize up at any minute. Maintenance was performed and kept up with. The Oil pressure light had been flashing when the vehicle turned but was flashing even when oil had just been changed. These engines are dangerous and have people in a financial hard spot. I still owe $16k on a car I can no longer drive and that Hyundai is saying due to owner maintenance will not get an engine replacement. The Facebook group Hyundai Oil Consumption test has thousands of people dealing with the same exact issue on these cars and engines.