2018 Hyundai Kona: jerking or lurching

Filed May 6, 2026 · Engine · 90,000 miles · OH

The contact owns a 2018 Hyundai Koa. The contact stated that while the daughter was driving the vehicle began to sputter and jerk before stalling. During the failure the oil warning light flashed off and on. The vehicle was towed to the local dealer who diagnosed that the engine had failed due to carbon buildup. The contact was advised that the engine needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure but no assistance was offered. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 21V301000(ENGINE) The contact indicated that the vehicle had experienced that same failure listed in the recall. The failure mileage was 90,000.

Filed Feb 16, 2026 · Engine · IN

The car was burning through oil every 14 -21days. Car has been jerking and taking a while to accelerate. Went to machine to see what’s going he suggested I go to the dealership because there’s no leaks visible. But added more oil so I wouldn’t go without oil there was nothing available for me to come in right away and before my appointment my car started to speed up out of nowhere then completely slowed down then jerked until I could find a safe space to pull over. Check engine came on and the code was reading a misfire. Got a tune up still reading as a misfire now just stuck at the dealership playing guessing games with what’s wrong with the vehicle.

Filed Nov 19, 2025 · Engine · MA

The component that failed was the connecting engine rod bearing. The engine is currently in the vehicle located at a hyundai dealership. The connecting engine rod bearing failure came after 1 or 2 engine miss-fires. The vehicle suffered poor performance, I was unable to start the car and properly accelerate the vehicle. The vehicle has exhibited poor acceleration/ jerk acceleration since purchase. However, this incident occurred immediately during initial startup in a parked position. The vehicle rode roughly upon initial observance of this engine miss fire which led us to deem the engine and car unsafe to use. The vehicle was initially towed to an independent service center where they identified the engine missfire code. The vehicle was then towed to our frequently used independent servicer where they said the problem related to low compression in the engine possibly something internal in the engine. Next we towed the vehicle to our preferred hyundai dealership. Hyundai confirmed the engine missfires and connecting rod bearing failure. A claim is in process with Hyundai to assess the vehicle further. The check engine light came on when the engine miss-fired initially. An earlier check engine light came on for a missfire earlier in the 2025 and earlier in 2022 and in 2023 which led to a catalytic converter replacement. While not certain, we think that low compression and poor engine performance has plagued the vehicle since purchase. The vehicle drive jerky(poor/delayed acceleration when pressing the gas) and had early catalytic converter issues prior to 50k miles.

Filed Aug 13, 2021 · GA · crash

I have owned the car for a little over a month, full warranty still on car. Two weeks into owning I noticed the steering wheel would effect the navigation, radio, camera...the console would go into a loop and keep restarting. Took in for service, the stated they would order a part. Saturday, August 7th, I was looking for a parking space in the Publix that is less than 1/2 mile from my home. As I was turning into the next lane at, approx 2 miles per hour if that ,to find a space, the steerring held tight to the right, I felt the car lurch forward and accelerated and a turbo speed. I tried the brakes, they failed, I was not able to turn the steering wheel. I accelerated at a high speed from 2mph to whatever impact was slamming into a parked car. Had anyone been putting their groceries in that car, or standing in the way of my out of control vehicle they would be dead. I have a witness statement. My car is totaled. My car, turned into a monster and would not stop nomatter what I did. Insurance inspected. I already stated the issue I took the car into prior to the accident, which was pending service. PLEASE PLEASE PLEASE do you the right thing and get these cars off the road. I contacted the manufacturer and filed a complaint, no response. I have researched this and HUNDREDS, THOUSANDS of complaints describing the same the same thing. I am 48, been driving since 16, zero accidents as an adult, clean driving record, purchased new cars and driven for at least 10 years... this this is the first used car I purchased, and from Hyundai that I have ever purchased. I owned this car a little over a month before the accident. I have reasearched this online, and see this is NOT an uncommon problem in Hyundai or other cars. WHY ARE YOU NOT GETTING THESE CARS OFF THE ROAD?????

Filed Feb 8, 2021 · Engine, Fuel system · 54,000 miles · PA

On 1/13/21, vehicle emitted a blue smoke and misfired when accelerating from complete stop from rural road onto state highway.. Vehicle was taken to ciocca hyundai of williamsport, where it had been serviced 2 days prior. They replaced 2 spark plugs and stated it was fine. Vehicle worked fine until the following morning. The vehicle was misfiring during an acceleration from complete stop and eventually quit on me. I was on a state highway at this point. The vehicle was towed to ciocca hyundai of williamsport. They serviced it until 1/18/21. Upon pick up, they stated that they believed it to be bad fuel that was causing the trouble. The fueling station I exclusively use has no reports of bad fuel besides mine. The following morning, 1/19/21, the vehicle's main display showed an error message that "a possible condition has been detected with the engine control system. Please take vehicle to nearest dealer." see attached for image of this message. Ciocca hyundai came and got the vehicle. They had it for two weeks. Upon receiving the vehicle back, they stated that it was just an "old code that wasn't cleared" and that the vehicle was not displaying any issues. 15 miles after leaving the dealership, that message reappeared. On 2/5/21, the vehicle felt like it was jerking slightly. I reported this to the dealer and they stated that the vehicle would be ok to operate in this condition. On 2/6/21, the vehicle emitted a blue smoke during acceleration from complete stop on side road. The vehicle then misfired to the point of almost quitting when pulling out onto a state highway from a complete stop. This could cause an accident. I reported this to the dealer who wants the vehicle to come in tonight for an appointment on 2/10/21. Hyundai consumer affairs has been notified of all of this but hasn't provided any course of action besides just investigation.

Filed Oct 11, 2020 · 32,000 miles · FL · crash

When going from gas to brake, even at low speed the car lurches forward, even after the brake is compressed. I have been in two crashes now with the same car tis has happened. I see that in australia, over 4000 of the same cars were recalled for this issue. Two years ago I crashed into a tree. This morning I crashed into my garage door and demolished it.