2017 Hyundai Tucson Fuel Cell engine problems

“This unresolved issue has created serious safety risks. On two separate occasions, my vehicle lost power while crossing the Leo Frigo Bridge in Green Bay—an extremely dangerous scenario for both my family and other drivers. Most recently, within just ~40 miles of picking up the vehicle from service, the issue recurred. The service department reported finding oil on the ignition coils—symptoms consistent with known and documented warranty concerns such as: Valve cover gasket leaks Spark plug tube seal failure High-pressure fuel pump gasket leaks The vehicle has been brought multiple times to a certified Hyundai dealership for recurring problems including power loss, poor engine performance, and excessive oil consumption. Despite these repeated service visits, the underlying issue has not been properly addressed. I have now been informed that I am responsible for diagnostic charges—even though the vehicle is covered under the TXXM Engine Warranty Extension / Powertrain Limited Warranty due to known oil consumption-related defects.”

“In April of 2023 while driving I heard a pop noise and my engine started smoking. A connecting rod had broke in half and went through my oil tank. My 2017 Hyundai Tucson had only 54k miles. I was denied warranty and my vehicle was branded maintenance neglect due to lack of proof of oil change but when I sent the dealership I purchased my vehicle from the all my oil change receipts in August 2023 I was still denied and my car is still branded today without explanation.”

“The turbocharger on my 2017 Hyundai Tucson 1.6T has failed three times within one year. Most recently, the dealership diagnosed the turbo’s wastegate actuator as being completely open, resulting in severe power loss and unsafe driving conditions. The replacement turbo from an authorized parts supplier is still under a 5-year warranty, and the dealership confirmed there were no oil feed or installation issues contributing to this repeated failure. Component/System Failed: Turbocharger (wastegate actuator stuck fully open). The failed turbocharger is available for inspection upon request. Safety Risk: The vehicle experienced severe loss of power while and also the dealer made me aware there is a valve stuck in the turbo itself and if i drive it it could blow the motor up, which made merging and accelerating unsafe and could have resulted in a collision. The lack of engine power when entering traffic or climbing steep grades put both myself and other drivers at risk. Dealer Confirmation: The issue has been confirmed and documented by a Hyundai dealership service center. This is the third turbocharger replacement within one year for the same vehicle, indicating a…”

“I own a 2017 Hyundai Tucson with the 1.6L turbocharged engine. My vehicle is experiencing serious and potentially dangerous engine issues, including knocking, loss of power while driving, sudden engine stalling, and low oil pressure. These problems have worsened over time and now occur regularly during normal operation. The vehicle has stalled in traffic on multiple occasions, creating a significant safety hazard for myself and other drivers. I am aware of an existing recall (21V-727) for 2017 Hyundai Tucson models with the 2.0L engine related to premature engine bearing wear, and the symptoms I’m experiencing appear to be identical — yet my 1.6L turbo model is not included. I strongly believe this issue may also affect the 1.6T engine variant and poses a serious safety risk. I am requesting that NHTSA investigate whether the 1.6L turbocharged engine used in this model year should also be subject to recall due to the same type of internal engine failure. I am currently pursuing diagnostics and have contacted Hyundai to request assistance, but the cost of repair and potential danger while driving remain urgent concerns. Please take this report into account as…”

“The vehicle suffered extreme oil consumption while under the 'famed' 100k mile warranty. Tests were performed at the dealership confirming excessive oil consumption. Hyundai USA refused to service the issue claiming my personal service records did not meet their standards of responsible maintenance. At 108k miles the engine failed while on the interstate in CO. Cylinder 2 had blown and the dealership noted the towed vehicle was low in oil. The engine failure is a direct result of excessive oil consumption, something that hyundai has been aware of and has chosen to fight against owners damaged vehicles, rather than remedy the issue. Hyundai has faced class action suits and settled on these, yet still has not admitted fault. This issue poses a safety hazard for owners who may suffer catastrophic engine failure while driving.”

“The engine blew. It had to be replaced at my costs because hyduadai does not warrant when a car changes hands. It has 81250 in miles. This is happening to lots of people. It’s a 1.6 L engine. The 2.0 has a recall. But the 1.6 needs to be recalled also. Something needs to be done.”