Hyundai Tucson fuel pump 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 13, 2026 · Acceleration, Engine · LA

While driving at highway speeds, my 2019 Hyundai Tucson SE suddenly loses acceleration and drops into a 30 mph 'limp mode' while the engine overheats. This creates an immediate highway safety hazard with an imminent risk of a rear-end collision. The vehicle also suffers from excessive oil consumption, requiring manual top-offs twice a week. The servicing dealership diagnosed a fuel system failure, quoting $5,847 to replace the fuel pump, fuel injectors, and oil gasket. Hyundai Corporate (Case #43358088) officially denied warranty coverage on October 12, 2026, falsely claiming wear and tear despite active TXXM 150,000-mile extended warranty framework protections. Furthermore, there is a data discrepancy: the dealership pulled diagnostic trouble code P0172, but corporate claims the vehicle threw code P0173 and is withholding the physical diagnostic printout behind a fee paywall.

Filed Jul 19, 2026 · Engine, Fuel system · CO

The Core Symptoms: "The high-pressure fuel pump is leaking internally. Raw gasoline is flooding into the engine oil crankcase, causing severe fuel dilution. The engine air filter is physically soaked in raw fuel and smells strongly of gasoline." My engine is always extremely hot after I have only went 15 mins away from home. Sometimes takes over two hours to cool down. The Safety Risk: "When attempting to accelerate, the vehicle experiences severe fuel starvation, causing the engine to bog down and act like it is going to stall in the middle of traffic, creating a severe crash hazard. Additionally, there is a loud 'popping' sound/mini-backfire upon turning the vehicle off due to unburnt fuel vapors, presenting a high risk of an underhood engine fire. I have only 83,000 miles on my car.

Filed Apr 7, 2026 · Engine, Fuel system · ME · fire

Approximately one month ago I had a high pressure fuel pump installed in my 2018 Hyundai Tucson. While driving on the highway, about ten minutes from home, my car suddenly burst into flames. There were no warning lights in the cockpit. There was no smoke in the cabin. Another motorist flagged me down. I got out of the vehicle just in time for it to become fully engulfed in flame. It burned down on the highway. Police and fire responded. Insurance is investigating. If I was inside the vehicle, I would have certainly died.

Filed Jan 23, 2026 · Fuel system · CO

I have had numerous issues with fuel Injectors failing. The first incident was about 30,000 miles. This was fixed by the manufacturer not even 10,000 miles later, I once again had to return the vehicle, to be inspected by the dealership. Instead of replacing all of the fuel injectors at the same time they chose to only replace one. As soon as my car went over the 80,000 mile warranty limit, my fuel injectors went out once more. My mechanic son, has also changed several as well. I had to tow it, 100 miles to the Hyundai dealership, as I live in a rural area. I was told by a young lady, at the dealership, that it was be covered under the engine warranty, which is 100,000 miles. They weren’t even able to look at the car for a week charged me $250 for a diagnosis… After a week 1/2 dealership finally told me it would be over $3000 to repair.. NO! I had to pay to tow it back. I’ve been without a vehicle for five months. When the fuel injectors went out, it also damaged the high-pressure fuel rail, the high pressure fuel pump, and various sensors. This is dangerous, I live in a very rural area. It stopped operating out of the blue. It chugged/bumped a few times, and it was dead. This is inconvenient, and It’s dangerous, especially during the winter time where temperatures reach -20 regularly and no cell phone signals. I believe Hyundai is well aware, of the problem. In fact the service manager had mentioned that the parts were on backorder because apparently they are in quite high demand. No fuel injector should be going out in 15,000 or 20,000 miles, causing systemic failure. Hundai has made no effort to redesign failed parts. It’s quite disheartening, to replace/repair with a new defective part. That is going to go bad, in just a few thousand miles!! Im retired, on a fixed income. I bought new, so I wouldn’t have issues. Paying new prices, to drive junk. I’d just drop it off @ dealers, and walk away.. But the loan, is so upside down that isn’t even possible.

Filed Aug 7, 2025 · Engine, Transmission · WI

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.

Filed Jul 21, 2025 · Fuel system · CA

I purchased a brand new fuel pump on 2-28-24 after car died on freeway. Mission Hills Hyundai diagnosed as pump not turning on, so recommended replacing fuel pump assembly. On [XXX] car wouldn’t start, so took vehicle in and the next day it was determined as faulty starter. Car was picked up 7-3-25 after buying a new starter, but car would not start again the next day. The car was actually misdiagnosed and the ruling was tank fuel pump had an intermittent short circuit. I’ve driven on the fuel pump I purchased on 2-28-24 for about a year in a half. It only lasted 40,000 miles. Fuel pumps last 100,000 to 200,000 miles. I’ve driven other vehicles going over 100,000 miles on the same fuel pump. How did this fuel pump go out so quick? Was it installed right? Was it bad wiring? Was it a defective part? Thankfully the fuel pump went out when I wasn’t driving. This is a major safety issue and Lithia, who is the parent company of Mission Hills Hyundai, should be looked into. Also the misdiagnosis from the technician should be in question to. Integrity is also an issue here, so how can I feel safe if I want to to continue getting my car serviced here. Yes they gave me a new fuel pump with no charge, but still had to pay for a starter I didn’t need. Basically I spent $3000 for a part that went out on my vehicle in over a year. Just like how Ford has a recent recall of fuel pumps, Hyundai should be checked into this issue also. I will attach invoices including a service for my fuel system cleaning. I thought all this work I got done would prevent a major failure on a vital vehicle component. Thank you, Hope to hear from you INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 2, 2025 · Engine, Transmission · NY

I took my vehicle to my mechanic for inspection check up. My mechanic told me and supplied paperwork from their scans that the P0420 sensor in the cat converter was shot again (3x in 5 years) and needed to be replaced. The engine light had come on 3 weeks beforehand and I had it read and knew what it was. They sent me to Hyundai dealer as it was under warranty with documentation. I get to Hyundai dealer tell them it needs the sensor for inspection and an investigation for oil leaking from back of the engine. I also told them I was adding 2-3 quarts of oil between oil changes. They told me my mechanic over filled oil by .5 quarts and that's why the engine leaked. They investigated after I disputed by saying an oil change had been performed the day I brought it to them and found a bad head gasket, fuel pump seal, and oil pan seal. They charged my extended warranty for those repairs, shut off engine light for cat converter sensor without replacing it, and made me do an oil consumption test of 1000 miles. Car was still not inspected at this point. After 35 miles check engine light comes back on. Cat converter sensor P0420. I take it back in. They tell me they won't replace it until the oil consumption test is done because they need to know if oil is coming through the exhaust pipes (it was). I complete the test and go in. They tell me engine is burning .5 quarts of oil/1000 miles which is acceptable and as long as I complete oil changes every 5000 miles I will be fine. They then tell me if I want sensor replaced I'm 800 miles over warranty so I have to pay $2400 to replace. Called corporate they're only willing to cover half the repair as "good will" for the cat converter and was quoted $1300 by the dealer in question. Almost a month and still not fixed and still can't get car inspected because the check engine light is tripped by the P0420 sensor in the cat converter. It's the only vehicle my family has. I'm forced to pay to have transportation.

Filed Dec 27, 2024 · Engine · 105,000 miles · MI

The contact owns a 2019 Hyundai Tucson. The contact stated that while driving on the highway at 70 MPH when the vehicle acceleration speed was reduced to 40 MPH independently. The check engine warning light had illuminated. The vehicle was taken to a local dealer where it was diagnosed that the gasket fuel pump, camshaft, timing chain, timing chain sensor, and intake cam were faulty and would need to be replaced. The vehicle was repaired, however, the failure persisted. The manufacturer was not notified of the failure. The approximate failure mileage was 105,000

Filed Nov 29, 2024 · Fuel system · IL

Over the last 5-6 years, the 2016 Tucson has experienced an acceleration issue. When making a turn after a stop, the car will not accelerate above 30 mph. The RPMs will go up to 3000-4000, but the car will not go above 30 miles per hour. This has happened 5 times. I have had my mechanic look at the car, but because it was intermittent, they could not determine the cause. The fuel pump as well as the purge solenoid have been replaced on the car. If I turn the car off and let it sit for a few minutes, the issue seems to resolve. Only once has the check engine light gone on. Because the car will not accelerate this is causing a safety issue.