Hyundai Santa Fe fuel pump problems

Filed Nov 1, 2026 · Driver assistance, Fuel system · FL

My 2021 Hyundai Santa Fe SE (VIN: [XXX]), with approximately 93,000 miles, has repeatedly experienced a dangerous loss of acceleration while driving at highway speeds of approximately 60 mph. When I press the gas pedal, the vehicle fails to accelerate, making it difficult to merge, pass, or respond safely to traffic. The vehicle does not suddenly slow down, but it will not increase speed when needed. This creates a serious safety risk to me and other motorists. The problem occurs without a check-engine light or advance warning. I have noticed abnormal behavior involving the Idle Stop & Go “A” indicator, which changes between orange and white. Coconut Creek Hyundai, an authorized Hyundai dealership, has inspected the vehicle multiple times. The dealership initially replaced the battery, then diagnosed and replaced the high-pressure fuel pump. The pump was replaced a second time due to a reported issue with the replacement. Software updates or resets were also performed. Despite these repairs, the original acceleration problem continued. The dealership has now diagnosed all four fuel injectors as severely clogged or defective and recommends replacing them. The service advisor stated in writing that the high-pressure fuel pump failure caused the injectors to fail. However, the dealership has not explained why this damage was not identified during earlier repairs or provided assurance that replacing the injectors will resolve the acceleration problem. Hyundai Motor America has been contacted regarding the repairs. The vehicle and dealership service records are available for inspection upon request. Availability of previously removed parts must be confirmed with the dealership. I request that the federal safety agency investigate this recurring highway acceleration failure as a potential vehicle safety defect. Multiple repair attempts have failed to resolve a condition that could result in a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 1, 2026 · Engine, Fuel system · NJ

For approximately the past year, my 2021 Hyundai Santa Fe, currently with about 23,000 miles, has experienced intermittent engine and fuel-system problems. During start-up, the vehicle sometimes makes an abnormal rattling/cranking noise, followed by noticeable engine and vehicle vibration. Warning lights may appear, and on some occasions the engine does not start successfully on the first attempt. When it does start, it may initially run rough. The vehicle has also stalled intermittently and has had repeated incidents where pressing the accelerator produced little to no engine response or acceleration. This creates a serious safety concern because the vehicle may unexpectedly stall, lose power, or fail to accelerate when needed while driving. The vehicle has been at an authorized Hyundai dealership for more than one month. The dealership has been working with Hyundai Tech Line and has replaced or evaluated the low-pressure fuel pump, high-pressure fuel injector, high-pressure fuel pump, MPI/port fuel injector, and valve cover. The latest recommendation is to drain, clean, and refill the fuel tank. Despite these repair attempts, the root cause has not been clearly identified or permanently resolved. I am concerned that the repair process has become trial and error, with additional components being replaced while the underlying safety-related issue remains unresolved. I am also being asked to pay out-of-pocket for some of these unsuccessful repair attempts. The vehicle is currently at the Hyundai dealership and is available for inspection if needed.

Filed Oct 9, 2026 · Fuel system · CA

THERE IS A RECALL FOR THE SAME ISSUE ON THIS MODEL … I HAVE A CLAIM INTO HYUNDAI TO ALLOW MY VEHICLE TO BE REPAIRED UNDER THE SAME RECALL. This is a very dangerously problem and wish it to be investigated for the 2.0 Turbo as well. X Hyundai issued two main fuel-related recalls for the 2021 Santa Fe equipped with 2.5-liter turbocharged engines due to risks of fuel leaks and fires: & • Campaign 206 (the federal safety agency Recall 21V308000 / May 2021): The fuel pipe connecting the high-pressure fuel pump to the fuel rail may not have been tightened to the proper torque during manufacturing. Dealers inspected and retightened the connection for free. • Campaign 207 (the federal safety agency Recall 21V524000 / July 2021): Covering select 2021-2022 Santa Fe and Sonata models with 2.5L turbo engines, this recall addressed fuel pipes from a specific production run installed with insufficient torque or improper concentricity. Dealers inspected and either retightened or replaced the fuel pipe at no charge.

Filed Sep 23, 2026 · Engine · NY

Codes P0172 and P016B. Oil has fuel in it due to high pressure fuel pump leaking. Possible premature engine failure or fire. This is a 2020 santa fe limited 2.0T.

Filed Sep 21, 2026 · Engine, Fuel system · HI

The vehicle experienced a sudden, intermittent engine stall while driving, specifically when slowing down or coasting to a stop in live traffic. When the engine dies, the vehicle immediately loses engine power, power steering, and power braking assist, creating an extreme safety hazard. After stalling, the vehicle refuses to restart for several minutes. An authorized Hyundai dealership previously replaced the high-pressure fuel pump under warranty to address this issue, but the dangerous stalling has persisted over the last 2,000 miles. The vehicle continues to randomly shut off without throwing a permanent check engine light or diagnostic trouble code, and the manufacturer has failed to correct this critical safety defect.

Filed Aug 13, 2026 · Acceleration, Fuel system · NV

Vehicle began running sluggish, gas smell noticed. Vehicle was due for oil change, took car in for oil change to AAA and mentioned gas smell. AAA identified gas leaking from fuel pump posing immediate safety issue that needed to be resolved.

Filed Aug 12, 2026 · Engine, Fuel system · TX

Complete unmitigated loss of acceleration and power while traveling at highway speeds, creating an immediate life-threatening road hazard. Following a warranty engine replacement and mandatory dealer software flash at Clay Cooley Hyundai (Sherman, TX), the vehicle began experiencing powertrain communication issues. While operating the vehicle at 65 MPH on the highway, the vehicle completely failed to accelerate and lost propulsion power, nearly resulting in a catastrophic rear-end collision with an oncoming 18-wheeler semi-truck. Dealership diagnostics claim "no trouble codes present," but live data telemetry confirms the High-Pressure Fuel Pump (HPFP) is actively commanding and delivering a dangerous 1,600 PSI to the fuel rail at hot idle. This abnormal fuel delivery is paired with a severe powertrain stutter in 3rd gear. Service personnel at multiple locations confirm a widespread, high volume of transmission failures and severe drivability issues specifically tied to this recent Hyundai software update. Corporate has denied repair coverage. The vehicle remains an active highway safety hazard and is completely undrivable.

Filed Mar 20, 2026 · Brakes, Electrical · CO

After performing regular oil changes, and even a new fuel pump sensor, I experienced an issue. Last oil change was within the past two weeks. Driving home from the mountains, I heard a knocking sound from the engine bay. I narrowed it down to all gears above 2500RPM, increasing knocking with RPM speed. I took it easy on the engine, mostly coasting down the mountain. Suddenly during acceleration on an uphill, a pop sounded, and copious white smoke started coming from the engine bay. I pulled over despite having no power brakes but I was fortunate to be near an off ramp in a rural area. Trying to troubleshoot roadside, i noticed fluid on the tie rod, but I wasnt able to determine what kind of fluid it was. When I try to start the car, there is one single click, the engine wont even attempt to turn over. Oil, battery and check engine lights are all on. After towing, I found that the fluid leaking from the vehicle is oil. The vehicle is currently at a transmission shop, but from my research, this isnt a transmission issue but a blown rod bearing the Hyundai engines are know for. I will be contacting a dealership to see if they will at least confirm my diagnosis.

Filed Feb 21, 2026 · Engine · MI

HI! Leaking valve cover gasket which damages spark plugs, ignition coils and fuel injector. Defective High Pressure Fuel Pump and fuel injector causing fuel to spray into engine and into engine oil. Large amount of fuel found in oil pan when oil changed. Complaint filed with Hyuandia, no response at this time. Thank you, [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Dec 26, 2025 · Fuel system · IL

I have a 2020 Hyundai Santa Fe, 2.0T. I recently experienced the following issues; gasoline fumes coming into the car at low speeds, difficulty starting the car when it is cold and hesitation when trying to accelerate quickly. The check engine light came on and the dealer diagnosed a faulty fuel pump and high pressure hoses......on a car with only 49100 miles! The repair cars are estimated at over $1800. This is totally unacceptable and there should be a manufacturer issued recall on the car where Hyundai covers the cost of the repairs.