Hyundai Accent misfire problems

Filed Mar 4, 2026 · Airbags, Engine · TN

I have had this vehicle for 5 years and even replaced the engine in this vehicle for it to end up with the same issue. I take very good care of it and get its maintenance done. But the car is slow to get up to speed and misfires really bad. I replaced the spark plugs in it and they were coated in oil. The airbag sensor will come on indicating it’s not operating properly. Overall a very unreliable vehicle that has multiple issues. It has ended in catastrophic engine failure twice now

Filed Dec 8, 2025 · Engine · OH

Driver: My [XXX] daughter (I was not in the vehicle), I am the owner. Mileage at incident: Approximately 89,000 miles (see Tire Discounters record, page 13). 2019 Hyundai Docs What happened: While driving on the highway, the vehicle suddenly lost power and stalled, requiring my daughter to pull over to the shoulder for safety. After the stall, the vehicle could not accelerate or operate normally. Earlier documented warning: On 9/23/24—only two days after purchase—Firestone documented “metallic glitter in the engine oil – possible internal engine wear,” indicating a possible internal defect (page 2). Hyundai service recommended and provided contact on 2 separate occasions to request Goodwill coverage. First attempt (no claim filed 10/2024), second attempt (claim mishandled by (2) Hyundai Motor America 2019 Hyundai Docs Post-stall findings: After the highway stall on 10/23/25, Tire Discounters documented misfire symptoms and recommended further evaluation (page 13). 2019 Hyundai Docs The vehicle was then towed to Columbia Hyundai, where a diagnostic on 11/12/25 confirmed: 0 PSI compression in Cylinder #3 100% leak-down Piston and cylinder-wall damage Valve/head involvement Recommendation for complete long-block engine replacement (See Columbia Hyundai diagnostic report, page 1.) 2019 Hyundai Docs Safety concern: The vehicle experienced a complete loss of power at highway speed, which created a potentially dangerous situation for the driver. Manufacturer response: Hyundai Motor America denied goodwill assistance and termed as warranty assistance and has not addressed the early-documented internal defect or the safety risk created by the highway stall. Can provide any other documentation needed for your review. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Nov 30, 2023 · Engine · AL

Like many of the other complaints, in 2 years I have now replaced 3 catalytic converters. Everything will be fine and then BAM car stops working. No one can find any other issues. The car is in the shop again after the engine misfire light came on. Let’s see what it is this time. I am guessing it is an engine problem but no matter how many times I look, there are no recalls. Not sure what else I can do

Filed Jun 12, 2023 · Engine · WA

On 02/18/2023 at approximately 5pm, my family was driving on the highway, when unexpectedly, my check engine starts flashing and there is a noticeable decrease in acceleration and my vehicle feels rough/jerking as I head to the nearest exit. My spouse checks the vehicle and believes it is a spark plug/coil issue and we head to the nearest auto parts. The store rep is able to confirm engine misfire on all 4 cylinders, which does seem to indicate that spark plugs/coils should be replaced. We replace the plugs and coils, yet the replacement does not correct the problem. On 02/21/2023, I am able to have a certified mechanic diagnose my vehicle and he performs a compression test and confirms that 3 cylinders are at slightly lower PSI, and the 4th is at 0 PSI. Unknown to me, this means my engine needs to be replaced. The mechanic provides additional information that there are known issues with Hyundai engines and recommends I contact dealer, as he has also had a number of Hyundai owners with the same issue. I did further research and I discovered that my specific vehicle is not included in any current recalls. Yet I also discovered that there is an open Class Action lawsuit to expand the recall, which appears to include the engine in my vehicle. I did contact the Hyundai consumer affairs on 02/21/2023 and I am directed to contact my nearest Hyundai service center. I contacted the Hyundai dealership in Auburn, WA yet after my initial contact the representative fails to return my messages or follow-up. As this appears to be an ongoing issue with certain Hyundai vehicles, I want to make sure that there is a record of this incident for your review. The one ongoing issue I can confirm is that my vehicle appeared to burn oil. Although, it was inconvenient, I was able to get top offs at Jiffy Lube.

Filed Jul 22, 2022 · Electrical, Engine · CA

The vehicle is giving jerks while driving and can't move. I had reported to hyuandai,stockton -they inspected and said no issues. After I got and travlled for another 200-500 miles, the car having same issues and stop on the free way,when iwas with my family and kids. The car was towed to hyuandai stockon and they said the cylinders and power plugs were misfirmed. Thye kep the car for one week and they replaced the parts. Thye requested me to take the car and drive, but I was not comfortable/feeling safe to drive that car- as they were not guarantee me that it will happen again and also they were not giving answers why it was not deducted in there inspection, when I nrought to their notice. They were not giving the reasons/root cause of why it happened and they were not assuring that it will not happen agaian. I reported to hyuandai customer relations, they were saying me to take the car and drive and see if any issues arrives. But I need assurance from them, that it will not happen again and I don't want to keep my life in risk driving faulty car. Please help us.

Filed Jul 2, 2022 · Brakes, Engine · NY

Car turns off while driving continuesly misfires even after replacing coils and spark plugs check engine light on and flashes car charger port keeps blowing fuses

Filed Feb 17, 2019 · 77,900 miles · PA

My car misfired and after that started to sputtering when I idol, slow down or speed up. I got new plugs put in and put some dry gas in tank.still sputters when in idle or slowing down. Check engine light blinks and then stays on.

Filed Aug 3, 2016 · Engine · 64,426 miles · PA

Tl* the contact owns a 2010 hyundai accent. While driving 5 MPH, the check engine warning light illuminated. In addition, while driving on an incline, the engine misfired and the vehicle stalled. The vehicle was not diagnosed nor repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 64,426.

Filed Sep 26, 2014 · Electrical · 77,000 miles · GA

I have had to replace the coil packs on my 2011 hyundai accent 3 times so far and yesterday they went out again. My check engine light came on, car started running rough and would not accelerate properly. I went to the auto repair center and they advised that the coils were bad again and the vehicle is having a misfire. This will now be the 4th time I will have to replace all of the coil packs. I spoke with hyundai and they stated that there is not a recall for this problem and were no help on this issue.

Filed Sep 20, 2014 · Electrical · 45,000 miles · VA

I bought my sedan almost 2 yrs ago and I have replaced all four coils randomly since then. Yesterday my engine light came on again as I was stuck in traffic and coil 2 was misfiring again. Now that I am out of warranty I am having to argue with hyundai corporation on this matter that should be labeled a recall. Not to mention I just recently sold our 2011 hyundai accent hatchback that only had 30000 miles on it, after having it's first coil malfunction.