2012 Kia Optima: jerking or lurching

Filed Apr 30, 2026 · Engine, Transmission · KY

Sudden engine failure while driving with no warning. Vehicle began jerking, shaking, and losing power. RPMs dropped unexpectedly and the engine stalled intermittently. Multiple misfire codes were present (cylinders 1, 3, and 4), and the engine was found to have low or no compression in cylinder 1. The condition rapidly worsened to near complete engine failure. The vehicle was operating normally prior to this incident. This failure is consistent with known Kia engine defects involving internal engine damage, including rod bearing failure. This is a safety concern due to sudden loss of power while driving.

Filed Dec 13, 2025 · Transmission · FL

The failure involves the component covered under the active safety recall campaign. The affected part/system is still installed on the vehicle and is available for inspection upon request by the manufacturer, dealership, or the federal safety agency. Recall number : 23V6552 While driving in traffic, the vehicle suddenly began to slow down without warning, started jerking, and lost normal operation. I was forced to pull over to avoid a collision. This sudden loss of power and control placed me, my passengers, and surrounding drivers at risk of an accident. Yes. The issue was confirmed by an authorized dealership. The dealership acknowledged that the problem is directly related to the active safety recall but refused to perform the repair due to vehicle mileage exceeding 150,000 miles. The vehicle has been inspected by an authorized dealership representing the manufacturer. No inspection has been performed by police or insurance representatives at this time. No warning lights or messages appeared prior to the incident. I had not received the recall notification letter at the time I purchased the vehicle. The first occurrence happened suddenly on 12/10/2025, when the vehicle began slowing down and jerking in traffic. After I pulled over and parked, multiple warning lights and messages appeared, and the steering wheel stopped moving normally. This vehicle has an open the federal safety agency safety recall. Safety recalls do not expire based on mileage or ownership. The dealership acknowledged the issue is recall-related but refused to perform the repair due to mileage limits, which is inconsistent with federal safety recall requirements.

Filed Jul 18, 2025 · Engine · 160,000 miles · MO

The contact owned a 2012 Kia Optima. The contact stated that while driving 60 MPH, the vehicle jerked, with an abnormal hissing sound coming from the front of the vehicle. The contact stated that there was smoke coming from the rear of the vehicle and entering the cabin of the vehicle through the A/C vents. The contact stated that several warning lights were illuminated. The contact pulled over to the side of the road and the vehicle was towed to an independent mechanic. The contact was informed that there was a hole in the engine. The contact was informed that the engine needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was not notified of the failure. The contact notified the insurance company; however, no claim was filed. The failure mileage was approximately 160,000.

Filed Dec 3, 2023 · Engine · OK

On September 27, 2023 I was driving home at 50 mph on 41st & Lynn Lane in Tulsa, Broken Arrow, OK. The car just shut down right before I had to stop at a stop sign. Not being mechanical minded the only thing I could think of was to call a towing company (AAA). I was informed to also call 911 to have a police officer come and block traffic to keep me from getting hit. It was towed to the only garage there is close to my house as the Ferguson Dealership couldn't take it at the time. It was at a place called The Garage. They at the time told me they thought it was the fuel pump and replaced it. The work was done on October 2, 2023. On November 26, 2023 I was driving home on the Cimarron Turnpike when the car just lost power. I pulled over as best I could and did after a bit get it to start again. I called my brother to see if he would follow me home as the car jerked and would only do 60 mph. I put on my flashers and my brother did follow me home. I have researched the trouble and saw a recall #147 (Kia's # I believe. it is a recall for the engine and something to do with the KSDS. Kia Dealership ( Ferguson Kia) again couldn't take the car so I took it to The Garage again and received a call from the tech that I need another motor. I am calling Kia Corp to see if they will replace it.

Filed Jun 3, 2023 · Engine · TX

I tried to speak with Kia about a recall the engine on my making model I remember seeing it on your guises website this issue was never fixed and I’m currently having issues with my engine and they’re refusing to replace it. I’m trying to avoid a lawsuit and a serious accident because of the way my car is acting up. It is accumulating me a check engine, light, as well as a oil light I’ve brought the car in many times to vanguard kia and they could not figure out what was wrong with the car , and holding it for week the two times i brought it in and it seems as if you’re continuing to drive it is creating more issues because I had to pay $1300 out of my own pocket because my engine started overheating because it has a problem that kia could not find but is showing signs of the recall that was on this year make and model , VIN and everything the car currently will jerk whenever I’m going let’s say this speed limit 60 it will downshift all the way to 30 now this can cause a horrible, horrible accident

Filed Feb 14, 2022 · Engine · TX

My car was put down for a recall awhile back i took it to kia because i was recently have a problem with it so i thought it could be the recall, but it wasn’t i told them since my car has already been there 2 weeks can they just replace the recalled engine they said no they wouldn’t do it unless my car actually malfunctions so they put a knock sensor and updated my vehicle ever since then i’ve been having problems and my car sometimes on the high way will not accelerate and will stall and jerk badly which is EXTREMELY DANGEROUS also recently my car is malfunctioning error “ old codes “ which didn’t make sense to me or the repair service people at KIA

Filed Oct 15, 2021 · VA

While driving approximately 55 mph, the vehicle produced a grinding noise then lurched a few times every couple of minutes and then the engine shut down. Luckily I was able to safely coast to a stop while going downhill and stop the vehicle at the side of the road. Turned the engine off, waited one minute, then pushed ignition button. Hybrid system started but engine did not. Shifted to Drive, pressed accelerator, but vehicle would not proceed. Turned everything off and waited five minutes. Pushed ignition button and hybrid system and engine started and shifted to drive. Vehicle would drive at underpowered speed and was able to drive 2 miles home at 35 mph. As I drove into driveway, the engine shutdown again. This occurred just a few hours ago, so it has not been serviced by anyone.

Filed Sep 12, 2021 · WV

I was coming home from work doing around 75 mph on cruise control when all of the sudden the car jerked violently and lost all power, the car behind me would’ve rear ended me if they weren’t paying attention. I just hold the throttle down to get home, misfiring terribly, and the best way I can describe, it smelled hot if that makes sense. I had it looked at and was told it doesn’t have compression in one of the cylinders and that it wasn’t covered under warranty or recall. So now I’m paying for a car that I can’t drive.

Filed Feb 5, 2021 · Electrical, Engine · NY

My check engine light is blinking; faulty acceleration on highway and going upgrade (uphill), vehicle jerking on local roadways; auto zone says its a faulty knock sensor. It could possibly be an issue with the engine but I'm not sure.

Filed Dec 9, 2020 · Engine · WA

I was driving to pick my kids up when I slowed down to turn a corner the car started making a weird noise and kind of jerked some. I picked up 1 kid pulled out of the parking lot when the car jerked again and barely was moving, even though I was pressing on the gas. Then my display flashed hybrid system failure and I was able to drive another 200 yards to park safely and that was it. My husband went to pick it up later with a trailer and oil was pouring out of the under carriage although I didn't hit anything and there was no reason. This is the replacement motor in my car, in 2017 we had an engine failure as well due to some kind of bearings. I haven't taken it in yet, it's in my driveway waiting to see what the newest recall is. Seems to be a common failure with kia.

Filed Sep 29, 2020 · Electrical, Fuel system · 160,200 miles · AR

Kia replaced my engine after it failed while driving. Now it hesitates and sometimes jerks like it's about to run out of gas. The skid light comes on even when it's dry. The break light pops on even when the vehicle isn't in use. There is a recall for fuel pipe damage after engine replacement but they won't acknowledge it or even inspect my vehicle know it can cause a fire

Filed Sep 14, 2020 · Electrical, Engine · 107,000 miles · WA

Transmission issues: between 2nd and 3rd gear. Would lag then jerk the car with some torque once it caught 3rd gear. Had to get 2 replacement transmissions because of this issue. Also engine seizer issue, my engine started to seize when I was going 45 miles an hour with alot of traffic behind me. Then all of a sudden it started making loud thunking noices then a very loud grinding noise and then I was stuck on a road not being able to get above 22 miles and hour, there was no shoulder to pull over. And I was stuck trying to go uphill and all these cars behind me. I ended up having to stop the car and leave it in the middle of a 2 lane road on a hill with the emergancy break on. Kia knew it was another seized engine which I thought it was my transmission again which I had brought in because this 3rd transmission was having the skilling issues around 20-25miles and hour, but after they knew I wasnt going to buy another kia again they wouldnt fix my trans that should probably be recalled anyways. But they thought it was another optima seized engine, and even though all optimas are recalled for this exact same issue, they say that mine isnt covered becasue its a hybrid and has a motor in the car also so its different set up. But theres are others online with this kia optima 2011-2013 hybrid engine seizer just like all the other optimas. And I think the hybrids should be included in the recall. As we are having the same issues. This was a very dangerous issue