2022 Hyundai Tucson HybridRecalls, problems, MPG & safety

“My wife was driving her 2022 Hyundai Tucson Hybrid, when she suddenly heard a bang and then the vehicle had very little engine power and would not accelerate properly. This turned out to be because the gas engine would not turn on and only the small hybrid motor was functioning. She was able to safely pull into a parking lot. The vehicle was tow to a Hyundai dealership where they diagnosed the issue as a broken/snapped Hybrid Starter Generator (HSG) drive belt tensioner spring. Because this spring failed, the accessory drive belt lost complete tension, and so the HSG could not start the gas engine. This made the vehicle unsafe to drive due to sever lack of power. The dealership replaced the entire HSG tensioner assembly under warranty. Researching this online shows that others have had the same issue and the replacement part appears to have a different and more robust spring. I have a second Tuscon PHEV and now worried the spring in that one will fail suddently. They do not sell just the spring, the whole tensioner has to be replaced which is very expensive. I think this is a safety hazard, as a sudden failure of the HSG tensioner spring while actively driving…”

“While driving my 2022 Hyundai Tucson Hybrid, the vehicle suddenly lost power, began shaking, and all warning lights illuminated at once. The car would not accelerate properly and became unsafe to operate in traffic. After pulling over and restarting the vehicle, the warnings cleared, but the issue has occurred more than once. It first occurred 3/25/26. The dealer was not able to reproduce the issue but found numerous faults and reset them. This is a serious safety concern because the vehicle can unexpectedly lose motor power while driving, creating a risk of collision. The problem is intermittent and unpredictable.”

“System/Component Failed & Inspection: The vehicle suffers from recurring failures across the engine, powertrain, electronic throttle control, and exhaust gas recirculation (EGR) control systems (DTCs P0524, P0642, P2118, P022100). The vehicle is fully available for inspection upon request. Safety Risk: While driving, the vehicle suffered a complete, sudden loss of motive power on an active highway entrance ramp. The engine stalled in moving traffic with zero throttle response, creating an immediate collision hazard before requiring a tow. Confirmation by Dealer: Technicians formally confirmed these defect patterns. In May 2026, diagnostics logged major engine and emission/EGR control codes, but corporate refused goodwill repair. In August 2026, the highway stall recurred. Diagnostics confirmed active low oil pressure and throttle failure codes, which the dealer resolved by applying 4 factory ECU software updates under TSB 25-01-010H. Service personnel explicitly confirmed these engine control issues are manufacturing defects, not wear-and-tear or mileage-related. Inspections: Inspected, diagnosed, and serviced by authorized dealership service department…”