2023 Hyundai Tucson fuel system problems

Filed Nov 8, 2026 · Acceleration, Fuel system · GA

I am the original owner of a 2023 Hyundai Tucson with approximately 56,000 miles. I am reporting a recurring safety issue involving sudden loss of engine power and acceleration while driving. I previously experienced a similar incident at approximately 50 mph, when the vehicle struggled to accelerate. Hyundai of Cumming inspected the vehicle and, on XXX, at 44,199 miles, replaced the high-pressure fuel pump and fuel pipe (Repair Order XXX). Despite this repair, the same issue occurred again on XXX. The engine struggled to gain RPM, and the vehicle would not accelerate properly. There were five occupants, including my [XXX] daughter and her [XXX] friend. Fortunately, I avoided an accident, but this could have resulted in a serious collision. I regularly use this vehicle for family transportation, including school and daily activities, and my commute involves approximately 25 miles of driving each way, including highways. Unexpected loss of acceleration is extremely dangerous, particularly when merging or keeping up with highway traffic. The vehicle is currently parked because I no longer consider it safe to drive. I am requesting an investigation into this recurring loss-of-acceleration issue in 2023 Hyundai Tucson vehicles, including whether a defect involving the fuel delivery system, high-pressure fuel pump, fuel pipe, or related components could cause sudden loss of engine power while driving. This problem poses a serious risk to the driver, passengers, and other road users. I am also attaching the hyundai repair invoice from last year for your reference. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 1, 2026 · Fuel system · MA

2023 Hyundai Tucson Limited, 2.5L GDI, Alabama-built (VIN 5NMXXXXXXXXXXXXXX), built [XXX]. On [XXX], at about 37,550 miles, the check engine light came on flashing and the engine ran rough while I was traveling in Canada. My scan tool showed P0300, P0302 and P0304 (misfires on cylinders 2 and 4). On July 6, 2026, Experience Hyundai in Charlottetown, PE (service order 92XXX) replaced one ignition coil under warranty. No fuel injector leak test was performed. The misfires returned. On [XXX], at 39,409 miles, my scan showed P0302 active and P0304 pending. The car also had extended cranking after sitting and the check engine light was on. I was told I could keep driving the car unless it started to jerk or engine light started to flash, then immediately stop driving it and have it towed. On September 25, 2026, the car was towed to McGovern Hyundai Route 2, Leominster, MA (invoice 148XXX). The dealer found all 4 fuel injectors leaking and replaced them under warranty with injector service kit 35399-2S133QQH. My vehicle is outside the production range of Hyundai TSBs 23-FL-002H-1 and 26-FL-001H, which cover this injector failure only for Alabama-built Tucsons produced through July 11, 2022. Yet it failed in the same way. I am concerned the defect extends beyond the bulletin dates and that a sudden misfire could cause loss of power in traffic. There is no recall for this condition. The dealer found all 4 fuel injectors leaking, even though only cylinders 2 and 4 had set misfire codes and replaced them under warranty with injector service kit 35399-2S133QQH. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 9, 2026 · Fuel system · UT

The car was working perfectly fine I drive it for work all the time and one day it started shaking weirdly. A couple days later the check engine light turned on. It was throwing the code that was pointing to "misfiring in the 3rd cylinder" We changed all the spark plugs, 3rd cylinder coil pack, and switch the coil pack to see if it would say a misfiring in a different cylinder. We then took it to a mechanic saying that it is the high pressure fuel injectors and that he has seen this problem with other Hyundai Tucson around the same year as us and that there was a bulletin on it.

Filed Jul 23, 2026 · Fuel system · 76,000 miles · NY

The contact owns a 2023 Hyundai Tucson. The contact stated that the fuel filler door failed to open as needed. The vehicle was taken to the dealer but was not yet diagnosed or repaired. The manufacturer was notified of the failure, and a case was filed. The failure mileage was approximately 76,000.

Filed Jul 8, 2026 · Acceleration, Engine · NC

I was on the highway on the way to work when my car started stalling. Every time I pressed the gas to give it some power, it would not go anyway where. after getting it towed to get looked at some of the fuel injectors failed and were misfiring. The warning message about ‘check engine’ popped up 2 minutes before it happened. this is the third time now in less than 6 months.

Filed Apr 29, 2026 · Engine, Fuel system · NY

Sitting at a red light the vehicle seemed to almost stalled then lunged forward about eight feet almost colliding with the vehicle in front of me. To my knowledge the vehicle has not been inspected by the manufacturer nor has the problem been reproduced by a dealer or independent service center. To my knowledge there were no warning lights, messages or symptoms. I am somewhat unfamiliar with this vehicle since I've only owned it for 5 days. I picked it up on 4-25-26.

Filed Jan 28, 2026 · Engine, Fuel system · ME

All four cylinders misfired in my car while driving causing the catalytic converter and all four fuel injectors to need to be replaced. My car suddenly stopped driving in a rural area with only a few minutes of warning when the engine light came on. I was not even able to drive to a nearby shoulder. I was stranded on the side of the road in 5 degree weather until a tow truck could come.

Filed Sep 16, 2025 · Acceleration, Engine · FL

My 2023 Hyundai Tuscon has 36000 miles. Started running rough with a slight noise. First noticed on Wed [XXX]. On Thursday [XXX] I went to start my car and it stalled. Finally after letting it sit a few minutes it started but only to have the SGI light flash yellow and stay yellow for the remainder of the drive. That day I made an appt at my local Hyundai Dealership in Brandon Florida. They kept my car. Fast forward, Monday September 15th I was notified that the car had lost a significant amount of oil. Car was inspected and free of any leaks. Tech stated because of the low oil & oil pressure the battery life was significantly impacted. I would need an oil change & new battery. Upon arriving back I came across an article stating that excessive oil consumption is common among these vehicles and the dealer wasn't even going to notify me of this issue. They were not honest and I want to file a formal complaint knowing that this is well known issue. I feel unsafe driving my children around and am upset that a recall has not been issued to fix this. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 3, 2025 · Brakes, Engine · IN

Engine misfiring, causing low power on interstate 70 also losing brake control.

Filed May 5, 2025 · Fuel system · TX

Driving on the highway when my car stopped accelerating when pressing down on the gas pedal. It was very risky to be driving on the highway without the ability to accelerate so we put our hazard lights on while we got out the highway ay the nearest exit and parked the car in a nearby parking lot. We were stranded about 100 miles away from home and had to have the car towed back home. Dealership confirmed that it was the fuel injector that was the issue and has been a known common issue for this type of vehicle.