Hyundai Santa Fe Sport stalling problems

Filed Oct 27, 2026 · Engine · PA

This vehicle has been suffering from substantial engine oil consumption, burning oil at an alarming and unsafe rate. I have repeatedly brought the vehicle to Washington Hyundai to address this under the engine class-action lawsuit terms, but the dealership continues to run repetitive tests without a resolution. This is a critical safety issue. Excessive oil consumption poses a severe risk of sudden, catastrophic engine seizure or stalling while operating at high speeds on the highway.

Filed Sep 17, 2026 · Engine · FL

My 2017 Hyundai Santa Fe was brought to a local Hyundai dealership for routine maintenance on July 1, 2026. The 9C2 software update was installed, without my knowledge or consent, during this service. Immediately after getting my car back, I noticed a problem starting the car (though no warning lights or alerts populated). The car seems to stall and then jerk during the first few minutes of driving, particularly after a cold start (car has been sitting for a few hours before starting). This has been a KNOWN issue by Hyundai for several months, yet this update continues to be installed. There is currently no fix, and Hyundai simply suggests letting the car "warm up" for 3-5 minutes before ever driving it. I have reported this to Hyundai corporate and have no other resolutions or timeline on a fix. Many other individuals are affected. This is particularly dangerous due to drivers not always having the ability to wait 3-5 minutes to let their car warm up, and the car is quite difficult to control with all the initial jerking and stalling. I live in a residential neighborhood and continue to be nervous about lack of control over the car when leaving my home. I firmly believe Hyundai should be held responsible for fixing this issue urgently.

Filed Sep 15, 2026 · Engine · NE

My 2018 Hyundai Santa Fe Sport (2.4L Theta II GDI, VIN [XXX], approx. 110,000 miles) has suffered a chain of engine and emissions-system failures that create a loss-of-power safety hazard. At about 80,000 miles, Hyundai replaced the original engine under warranty for excessive oil consumption, a defect Hyundai has acknowledged across the Theta II engine family. After only about 20,000 miles on that replacement engine, the catalytic converter failed and set a P0420 code. The vehicle now bogs down, hesitates, and loses power under acceleration. This is dangerous when merging or accelerating into traffic, where a sudden loss of power raises the risk of a collision. A restricted or failing catalytic converter causes exhaust backpressure and abrupt power loss, and the underlying oil consumption also risks low-oil engine damage and stalling. A catalytic converter should last far longer. This premature failure is consistent with the well-documented Theta II pattern in which engine oil consumption contaminates and destroys the converter substrate. It indicates the replacement engine Hyundai installed is itself consuming oil and damaging downstream exhaust and emissions components. I reported this to the dealer and to Hyundai. Hyundai declined to cover the catalytic converter, treating it as unrelated, even though its own warranty engine replacement is the direct cause. I am filing so this safety-related failure is documented. No crash, fire, or injury has occurred. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 10, 2026 · Engine · 136,434 miles · MI

The contact owns a 2013 Hyundai Santa Fe Sport. The contact stated that after a routine oil change, while driving back to the residence, the vehicle stalled. The vehicle was towed to the dealer to be diagnosed. The contact was informed that there were metal shavings inside the engine. The vehicle was diagnosed with engine failure. The vehicle was not repaired. The manufacturer was made aware of the failure and stated that the vehicle was not eligible for a recall repair because the engine software update was not performed. The failure mileage was approximately 136,434.

Filed Jul 30, 2026 · GA · fire

While driving a 2013 Hyundai Santa Fe Sport on a city street, the vehicle unexpectedly stalled and shut off while idling at a red light. The vehicle completely failed to restart. No dashboard warning lights, check engine lights, or fault messages illuminated prior to or during the stalling event. Immediately following the engine shutdown, a fire erupted under the engine hood. The fire rapidly escalated and completely engulfed the entire vehicle, resulting in a total loss. The local fire department responded to the scene to extinguish the blaze

Filed Jul 22, 2026 · Engine, Fuel system · TX

We have a 2017 Hyundai Santa Fe Sport with a refurbished engine due to a past class act settlement, we were notified by Hyundai to bring in the vehicle for Service campaign 9C2 to update the Engine Control Module (ECM) Software for vehicles equipped with the (2.4 GDI) Theta II refurbished engine, which we have. The morning after we updated the 9C2 software, after starting our car cold for the first time in the am, our car went into limp mode, shaking very badly, it would not accelerate above 20 MPH, it had a lot of trouble shifting from 1st to 3rd gear and acted like it was going to stall out and then die in the middle of the road while I was in the car with my 2 children. The dealership we took it to was not able to duplicate the limp mode, but has documented that they did witness hesitation and sluggishness while test driving it. I cannot validate that it was test driven cold immediately as requested as all their test drives were done without me. Due to the vehicle not accelerating as it should normally, I feel the vehicle is very unsafe and unreliable as well. I’m willing to provide more documentation, and our car is available for further inspection. I did request the help of a Hyundai customer relations case manager who stated Hyundai is aware of all of the drive-ability issues I have stated and he said they are hoping to provide another software update, but that time frame is unknown. Dealership mechanic stated the same thing and believes our issue is related to the 9C2 update. The manufacture has not inspected the vehicle, but we would absolutely love them to if they would. There have been no check engine lights come on before or after this update, only misfire codes came up after the update which dealership has those, and since the dealership was unable to witness it going into limp mode while driving it, they could not gain the much needed data that pinpoints the exact problem. We were advised to warm up car and rev up the RPM to above 2,000 before driving.

Filed Jul 17, 2026 · Engine · TN

The Hyundai Theta engine is a bad design that has many recalls, a history of oil consumptions, and breakdowns that leave consumers in danger, on the roadside, and out of money. This engine has a design that causes worn engine components and high oil consumption causing reduced engine power, ruined spark plugs, and engine damage with no recourse as a owner. Recently, my family member had a hesitation that causes the car to run rough and display a check engine light. She was in traffic and the vehicle was stopping. Had this been on the interstate it could have been deadly. This IS NOT UNCOMMON for these vehicles. A quick Google search is nationwide proof of an issue with these vehicles and engines that the government needs to hold Hyundai accountable. This particular vehicle has been assessed by a Hyundai and confirmed it is consuming oil at a higher rate than normal, as many other owners have documented. With this most recent issue of stalling out, the mechanic indicated that excessive oil consumption entering the spark plug port has fouled the spark plugs as the design of the engine is flawed. The oil consumption was discovered at approximately 99,000 miles and several steps were completed to "fix" and confirm the issue. There is no "real fix" to the issue due to the inherent design of the motor. Again, this is not a new issue with these cars and there should be recourse that holds Hyundai accountable for bad and dangerous engines. The check engine light did come on as the vehicle began to stall and run rough in traffic.

Filed Jul 17, 2026 · Engine · TX

The engine on this vehicle suffers from a severe oil consumption defect that was first officially reported to the authorized dealership on February 3, 2025 at approximately 90,000 miles while under the factory powertrain warranty. The vehicle completely empties its engine oil supply in under 1,000 miles of normal driving. Running entirely out of oil within such a short interval poses an imminent, extreme risk of sudden engine seizure, catastrophic mechanical failure, and sudden stalling at highway speeds. The manufacturer and dealership have physically documented this rapid depletion of oil over a 17-month period but are refusing to replace the defective components, instead attempting to force this unsafe vehicle back onto public roads for repetitive driving tests.

Filed Jul 13, 2026 · Engine · TX

Vehicle is a 2013 Hyundai Santa Fe Sport with the 2.4L Theta II GDI engine. A Hyundai dealer documented excessive oil consumption in December 2025 (3 quarts consumed over 1,703 miles during a dealer-administered oil consumption test; repair orders on file and available for inspection). On April 19, 2026, at 160,913 miles, following a highway drive, the engine developed a pronounced knock and vibration at low RPM and began stalling within seconds of idling in Park, with check engine and charging warning lamps illuminated. An engine that stalls at idle presents a safety hazard in traffic due to loss of power braking and steering assist. The vehicle was removed from service the same day, has not been driven since, and remains available for inspection. Knock Sensor Detection System software (Campaign 953) was installed and did not prevent the failure. Manufacturer has been notified in writing and consumer affairs cases are on file.

Filed Jul 12, 2026 · Driver assistance, Engine · SC

Today while driving to church we started hearing a ping noise ever so often. This just started then . After leaving church to go home the pinging noise got louder than the engine stalled and wouldn't start again. I had to have my car towed to my house. That is where it is now. The tow truck driver said that it was a rod. He said that he was mostly sure that it was happened. He stated that he has towed similar ones like mine with the same problem.