2017 Hyundai Tucson Fuel system Problems

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.

NHTSA ID

11751381

Incident

May 10, 2021

#1. This vehicle uses a lot of oil !!! It burns through it like crazy I have to check the oil every other day. #2. When I come to a stop while driving and give it gas to take off IT WONT GO !!!!! It hesitates and when it does go it LUNGES FORWARD!! This is a huge manufacturer problem not a buyer problem. The engine is junk.! 3. I’ve called numerous places to get help. This car needs to be recalled. This is a huge safety violation. It doesn’t wanna go when you give it gas and when it does, it lunges forward that can cause a huge accident on the highways. This car was made in China. It is junk. I’ve called to get help with this issue and no one wants to help. Nobody returns my calls and I’ll Hyundai wants to do is it even more money out of me when this isn’t my fault the car is junk. For safety concerns I would like someone to call me at [XXX]. This car needs to be recalled and my daughter has one. It’s doing the same thing except hers is a lot worse. Hers is further advance where it’s actually stalling in the middle of the road while driving huge safety violation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11746594

Incident

Jan 1, 2026

My 2017 Hyundai Tucson is experiencing dangerous, sudden engine stalling, which are symptoms directly matching Service Campaign T1B. These critical safety issues surfaced following a total engine replacement in June 2025. Despite the vehicle being within the 12-month/12,000 mile workmanship warranty, the dealership is refusing to honor this coverage or offer goodwill assistance. My claim is based on a documented pattern of physical and technical negligence: - Failure to Update Software: The dealership failed to perform the mandatory ECM/TCM software integration (Campaign T1B) during engine swap, which is required to prevent the exact stalling I am now experiencing. - Dismissal of Warning Lights (Code P0456): One day after the engine replacement was “completed,” I returned to the dealership because the Check Engine Light illuminated with Code P0456. This was dismissed by the service provider without a proper diagnostic resolution, despite being a direct indicator of improper vacuum line reconnection during the engine installation. - Mechanical Negligence (Coolant Leak): Post-engine swap, the vehicle developed a coolant leak, which was a direct result of improper reassembly. Additional proof of the lack of due diligence during the repair. The lack of follow-through, combined with the dismissal of a life-safety defect and poor physical workmanship, suggests a total failure in the case management process. I am urgently requesting assistance to resolve this hazardous situation.

NHTSA ID

11735576

Incident

Apr 20, 2026

The contact owns a 2017 Hyundai Tucson. The contact stated that the vehicle was consuming an excessive amount of engine oil. There was an abnormal knocking sound coming from the vehicle. There was no warning light illuminated. Due to the failure, the vehicle was towed to a dealer, and the excessive oil consumption was confirmed. The contact was informed that the vehicle was included in NHTSA Campaign Number: 21V727000 (Engine), and the engine was replaced. The vehicle was repaired, and a family member retrieved the vehicle and drove it to the residence without failure. Several days later, the family member started the vehicle, and fuel started pouring out from underneath the vehicle. Due to the failure, the vehicle was towed back to the dealer and was diagnosed the vehicle with an O-ring failure inside the fuel injectors. The dealer repaired the O-ring, and the contact picked up the vehicle from the dealer. Soon after retrieving the vehicle, fuel started pouring out from under the vehicle at start-up. The vehicle was towed back to the dealer and remained with the dealer. The manufacturer was notified of the failure, and a claim was filed. The vehicle was not repaired. The failure mileage was approximately 68,000.

NHTSA ID

11727984

Incident

Feb 27, 2026

Mileage

68,000 mi

This car has major oil consumption that affects the engine and catalytic converter. This can cause engine damage and stalls in driving that affect safety on the roads because the car doesn't accelerate properly. There were no warning signals to indicate this being a problem with the car, especially at purchase. This car will get an oil change and in less than a week, the oil is gone and bone dry.

NHTSA ID

11725184

Incident

Mar 4, 2026

While driving on the interstate at highway speed, my 2017 Hyundai Tucson lost power without any warning lights or prior symptoms. The vehicle experienced an immediate loss of propulsion while I was traveling in traffic, creating a dangerous situation because surrounding vehicles were also moving at highway speed & I had to quicky maneuver the vehicle to the shoulder with no power. The vehicle had approximately 73,861 miles at the time of the failure. After the incident, the vehicle was taken to a Hyundai dealership and diagnosed with a burned exhaust valve requiring replacement of the cylinder head & valve. The estimated cost of repair provided by the dealership was approximately 7550. The vehicle had no prior warning lights or symptoms before the sudden loss of power. A sudden engine failure resulting in loss of propulsion at highway speed presents a serious safety risk to both the driver and surrounding traffic. This was an extremely dangerous failure.

NHTSA ID

11722719

Incident

Nov 21, 2025

Car engine seized and lost ALL power going 60mph down the highway at night with my child in the back seat. I have poured quarts and quarts of oil in this vehicle because it burns oil at an alarming rate until it eventually runs dry and the engine seizes. This is extremely dangerous and luckily my child and I were able to drift to the side of the road without harm and injury. Very discouraging that there are thousands of these cars and engines on the road that can literally seize up at any minute. Maintenance was performed and kept up with. The Oil pressure light had been flashing when the vehicle turned but was flashing even when oil had just been changed. These engines are dangerous and have people in a financial hard spot. I still owe $16k on a car I can no longer drive and that Hyundai is saying due to owner maintenance will not get an engine replacement. The Facebook group Hyundai Oil Consumption test has thousands of people dealing with the same exact issue on these cars and engines.

NHTSA ID

11716105

Incident

Dec 18, 2025

I know there is a re-call for my vehicles engine and year with model. I am having serious issues with my vehicle related to the recalls for the same year and model. I feel unsafe driving my vehicle and now I do not know what to do.

NHTSA ID

11698719

Incident

Nov 7, 2025

I've taken the vehicle to several mechanics for engine-idling when turning, going up-hill. I've purchased new plugs, lines, engine cleaners, no-one can figure it out. The oil now has engine shavings even though the oil was recently changed. The car broke down today

NHTSA ID

11695914

Incident

Oct 27, 2025

Engine was replaced but car kept sputtering only to find out the fuel injectors needing replacement

NHTSA ID

11693743

Incident

Oct 2, 2025

My 2017 Hyundai Tucson Limited 1.6L Turbo (with 7-speed EcoShift DCT) has ongoing transmission problems. The vehicle hesitates, jolts, and sometimes fails to accelerate from a stop, which creates a serious safety risk when entering traffic or crossing intersections. The problem has been reproduced and confirmed by the Hyundai dealership in Fairfield, CT. They diagnosed the transmission and recommended a complete replacement at a cost of over $7,000. This issue matches the defect described in NHTSA Recall 16V628000 and Hyundai Service Campaign T1B, which involved the same 7-speed EcoShift DCT in 2016–2017 Tucson models. However, my VIN was not included even though I am experiencing the exact same safety defect. No warning lamps appeared before the hesitation/judder began. The safety risk is significant because the vehicle can fail to accelerate as expected in traffic, increasing the chance of a crash.

NHTSA ID

11688532

Incident

Sep 15, 2025

Car cuts off when driving the speed drops down automatically stops the dash lights go out and can’t start it right away

NHTSA ID

11665649

Incident

Jun 7, 2025

My car has been burning oil for over a year. there is no leak. I have been putting three quarts in every 4 to 6 weeks. I have now replaced two coil packs and the spark plugs. my engine light is on because it said 3 and 4 was misfiring so i recently replaced those coil packs and now it said spark plug and i replaced it again as well. so the engine light coming on and what it says the problem is is wrong. now when i push the gas it is knocking or missing. not sure how to describe it. no one has looked at it other than a friend that is a mechanic and he says its probably the engine because this kind of car has these problems.

NHTSA ID

11646478

Incident

Mar 5, 2025

1. After driving the car and turning it off, I get a loud bang coming from a gas tank. 2. Sometimes when making a hard right or left turn steering wheel vibrates, and the warning light for all wheel drive system comes on. When I turn the car off and restart it, it goes away. 3. After software installs due to recalls, when I accelerate my radio occasionally shuts off on its own, and then we’ll come back on on its own. 4. After turning the car off when I restart it occasionally the clock in calendar revert to 00:00 for the time and the date resets to 1/1/20.

NHTSA ID

11638923

Incident

Jan 27, 2025

Greetings, I have had issues with the Hyundai Tucson 2017 I own for many months. Issues include among others an abnormal knocking noise from the engine, reduced engine power and/or hesitation, burning smell, oil leaking, and smoke coming out of the engine, misfires, and other issues. It happened many times on the highway and almost caused accidents and the last time it happened, the vehicle was towed, and recently the smoke coming from the engine forced me to pull over. I reported the issue to the dealer but they didn't recall or address the issue. The car has been maintained properly over time and now I fear for my life. It is totally unfair that about 100k of this brand have been recalled for the same issue, in my case it is just after I finished to pay in full the vehicle. I seek your support to have it addressed for safety

NHTSA ID

11635446

Incident

Nov 11, 2024

In June of 2023 at around 79,000 miles. I was driving on the highway and had a sudden loss in acceleration and would not go above 65 mph. During the inspection, the dealership ran the vehicle through 3 tests of oil consumption and it failed 2 out of 3 which did not result in a replacement of the oil pan system. My car continues to burn through oil at an increased rate (every 3000 miles). I know because the dip stick is completely dry when checking it. In July of 2024 at around 84,000 miles, while driving on the interstate, I experienced a loss in acceleration again. My Tucson would not accelerate over 65mph. I took it into the dealership and they found that my catalytic converter needed to be replaced. The replacement was estimated to cost around $5000. For each incident, there were no warning lamps that illuminated on the dash. The oil light did not come on nor did the engine light come on.

NHTSA ID

11605609

Incident

Jul 31, 2024

6 June 2024 - Sudden severe loss of engine power while driving, presenting potentially serious safety hazard in traffic situations. Check engine light illuminated during incident (not blinking). Driver was able to pull to side of road and shut off car, then after 2 attempts car re-cranked. Driver was able to crank and drive 5 miles home. Check engine code P1233 stored & retrieved by scanner, indicating fuel pump issue -- (potentially a low pressure fuel pump leak similar to Hyundai TSB 23-FL-004H?), which may present fire hazard from leaking fuel. Visual inspection of high pressure pump in engine bay - no noticed problems. Visual / olfactory inspection of area around gas tank - no noticed problems or smell of fuel, no indication of leaking. Briefly cranked engine, no noticeable leaks or sounds. No check engine light (though P1233 stored).

NHTSA ID

11592953

Incident

Jun 6, 2024

Four days while driving on streets and freeways in Oklahoma City My 2017 Hyundai Tucson turned off and stalled. Lots of lights came on. Luckily I was able to get out of traffic without getting rear ended. I took the suv to local Hyundai dealer and they couldn’t find the problem. The second time I took it to the dealer they replaced sensor crankshaft to clear lights that were coming on. Paid $209.27 for multi point inspection and paid $412.62 for second repair. I’m frustrated because I was without transportation for 4 days. Dealerships did not offer a car for me to drive.

NHTSA ID

11572426

Incident

Feb 7, 2024

Unknown the car just start malfunctioning

NHTSA ID

11570782

Incident

Feb 1, 2024

Car has 125,000 mi on it. This will be the 3rd catalytic converter in 2 years. Second one was March of 2022. I have excessive oil consumption (1QT every other week). Which I believe causes the exhaust system to clog. It’s an engine flaw design I believe. The issues isn’t the converter but the oil consumption contributing to the clogging. The vehicle actually had complete engine failure while I was driving on the interstate Dec 23, 2023 driving at 70 miles an hour! It was caused by the clogged converter! I could have died! Thank you.

NHTSA ID

11567427

Incident

Mar 1, 2022

When proceeding to move forward, the vehicle will sputter. Almost as if the vehicle is out of gas or not getting enough power to smoothly accelerate. This presents a very hazardous condition when leaving a red light or crossing an intersection. The vehicle jerks and sputters for about 2-4 seconds and then responds to the gas pedal and accelerates. Took it to the dealer and explained the problem and they said it's a known problem but there hasn't been a recommended fix and to drive the vehicle with the Turbo mode on. Even with Turbo mode on, the issue still persists.

NHTSA ID

11544665

Incident

Jun 1, 2023

Engine stalled in the middle of the highway. Could not get speed over 30mph to get out of the way of oncoming traffic even with the gas peddle pushed to the floor. Engine light flashing. Finally was able to get over to the side of the road with care bucking and jerking the whole way and stuttered to a stop.

NHTSA ID

11542459

Incident

Jul 19, 2023

Excessive oil consumption, vehicle hesitate and sputters when attempting to enter into traffic. Spark plugs expire early. We've been dealing with this worsening issue for 40k miles. My wife no longer feels safe driving this car. Dealership could not recreate the problem. They likely know what the problem is.

NHTSA ID

11538092

Incident

Aug 12, 2023

Vehicle stops changing gears, fuel pressure dropped while driving on highway. Vehicle does pickup speed over 40mph. No check engine light warnings. Vehicle can only change gears using manual mode and still does not pick up speed and fuel pressure is not sensed as pedal to the floor doesn’t make the engine move faster but makes the engine sound like a transmission issue is happening.

NHTSA ID

11532676

Incident

Jul 12, 2023

Hello, I'm contacting you re: the nationwide Hyundai Oil Consumption issue w/ certain makes & models. I own a 2017 Tuscon w/ just over 56K miles on it. Late last year, we drove my car from our home in Ky to Gatlinburg TN. While we were driving thru Cades Cove, my car acted up, so we found a local repair shop & they looked my car over & determined I needed 4 QUARTS OF OIL added! My car was almost BONE DRY!!! I recently finished my 3 trips to the dealership for the 'oil consumption tests' I'm not sure what was done to my car on each visit, EXCEPT I do know on visit #2, they cleaned my engine/pistons & changed the oil. After that, I drove it aprox 1582 miles & 'lost' 3/4 of a quart of oil. They Hyundai Co seems to think this is acceptable, however, I do NOT!!! NO vehicle should burn/leak/lose that much oil over a 1500 mile trip!!! I got NO resolution regarding this issue, except I was told by my service tech to "keep an eye on the oil & add as needed" ... are you kidding me?? My car runs HORRIBLY & uses alot of gas now ( who can afford THAT??? ) I've owned Hyundai cars since 2006 & ALWAYS LOVED them & the brand, BUT after this, I will NEVER buy another one!!!!

NHTSA ID

11526812

Incident

May 31, 2023