2022 Hyundai Santa Fe fuel/propulsion system problems

“At approximately 67,000 miles, the vehicle experienced a sudden vibration when accelerate and decelerate. Engine light was on and vehicle had a hard time to maintain speed above 40mph. Cars were honking behind us due to the lack of speed on road. It happen all of a sudden and cause me and my wife panic at first. The car was took to the closest dealer ([XXX] Hyundai [XXX]) and they found the problem was due to an internally leaking fuel injector, requiring a complete out-of-pocket replacement. This is a known, widespread manufacturing defect directly addressed by Hyundai Technical Service Bulletin TSB #25-FL-001H (which supersedes 23-FL-002H-1). The bulletin explicitly states that 2021–2022 Hyundai Santa Fe 2.5L GDI engines suffer from premature internal fuel injector failure caused by internal filter breakage, forcing owners to pay out of pocket for a design flaw acknowledged internally by the manufacturer.”

“Symptoms are those described in Hyundai recall 236 (delayed shifting,hesitation, stalling). Vehicle has had multiple TSP services at Hyundai but symptoms persist intermittently. Software updates do not fix issue. Hyundai dealer has no other remedies.”

“Engine light for car read codes PO 304 303 420 prior to sale of car per code read out taken when engine light went off shortly after my purchase. Not addressed prior to sale. Codes read and called to dealership. Car taken for service. Reported fuel smell, exceleration issues, short stallings. Same codes. Stated car was " fine." Drivable. Asked for brakes/ rotors to be checked. No documented brake service given. Stated they were "fine." Taken to local brake place next day that confirmed brake rotors needed repair. Car returned after began sputtering. Reported as fuel injector failure. A known issue with this makr and model that shown codes point to that were given to, and read at service center by mechanic at dealership twice. They did not mention replacing catalytic converter, that is damaged from injectors and an emissions issue at time of call regarding repair report. No brake report or inspection requested multiple times to be checked. Did not follow correct protocol to ensure engine was clear of fuel sprayed by injectors into pistons, intake valves, ect. They placed my self at risk for engine fire, sudden car failure. Consistently mislead and failed to do…”

“This vehicle has experienced: • Multiple roadside breakdowns • Three fuel injector system failures • 2 complete transmission failures and replacements • Loss of propulsion • Fuel and chemical odor safety risks • A cumulative total of over 60 days out of service, currently at dealer since 4-15-26. SUMMARY OF SAFETY-RELATED FAILURES AND REPAIR HISTORY Incident #1 — May 20, 2022 (Mileage In: 4,899 | Mileage Out: 4,909) Vehicle broke down roadside in an unsafe, unlit area, requiring towing. Failure attributed to fuel injector defect. Vehicle remained in repair until May 24, 2022. Incident #2 — July 19, 2022 (Mileage In: 9,316 | Mileage Out: 9,321) Vehicle emitted strong gasoline odor, creating a potential fire and safety hazard. Vehicle was not drivable and required towing. Released July 26, 2022. During a recorded phone call, Hyundai Case Manager provided a verbal assurance that this failure would not recur. Incident #3 — September 9, 2025 (Mileage In/Out: 65,232) Vehicle exhibited engine shuddering, suspected fuel injector failure, and transmission shifting defects. Dealer released vehicle without resolving the defect on September 9, 2025. Incident #4 — January…”

“Fuel injector failed the entire engine on my 2022 Santa Fe had to be completely replaced. The dealership put in a new engine. Santa Fe is only four years old. That is highly unusual.”

“In November 2025, my 2022 Hyundai Santa Fe began to hesitate when accelerating and would almost "jerk" when I pressed the gas pedal. Soon after my check engine light came on and I made an appt to take it for the closest Hyundai dealership (as it's still under warranty 33k miles) Upon running a check the dealership notified me that Fuel Injector 1 has misfired and will be replaced. I receive my vehicle back and not even 100 miles later my check engine light in on again and the same issues are arising. Back to the dealership to see now Fuel Injector 3 has misfired and there is an open TSB showing all 4 Fuel Injectors need replaced. My vehicle was finally returned to me in January 2026. It is now February 16, 2026 and my check engine light in on YET AGAIN. I've been given the run around from Hyundai Corp about fixing this vehicle. Why is this acceptable treatment when a vehicle is under warranty ?”