2016 Kia Optima

My rear passenger side window would not go up or down & the motor would run when the button was pressed. That was in January 2026. Now April 2026, my driver's side rear window will not go up or down.

The contact owns a 2016 Kia Optima. The contact stated that while driving approximately 45 MPH, there was loud banging sound coming from the vehicle and there were shards of glass on the right elbow of the contact. No warning light was illuminated. Upon further inspection, the contact stated that the sunroof glass panel had shattered outward. The local dealer was contacted. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,500.

Car is not holding oil it acts like it's gonna cut off while driving and it jerking was diagnosed with colitic converter p0604

Engine oil light doesn’t work. Oil light flashed a couple of times in separate instances. Checking oil dip stick which smells like burning oil and dip stick hardly showed any oil left.

The Kias have been recalled for a failure to adhere the shark fin antenna. This has been recalled in some models. My 2016 has fallen off and is not on the recall list. Please include.

engine light start blinking out of no where and speed started to reduce while on the highway. my fix finder gave me code P1326

2016 Kia Optima engine locked up, vehicle stalled on interstate,heard a rod bearing sound, left me in limp mode trying to get out the way of 18 wheelers traveling behind me. Towed into Kia dealership which confirmed the engine locked up which has a recall #PI1802B KSDS, but denied to cover it because I didn't have this recall done. I also called Kia Customer Service, they denied me too and just gave me a case #[XXX]. I explained to them that I never received notice of this recall. So how could I prepare for something like this to happen while traveling from Texas to Louisiana to visit my grand kids. The dealership gave me a Quote of $9735 for parts and labor, which I don't have, I am still making payments on this vehicle. Now I am stuck in Louisiana with my vehicle, also it's going to cost me even more to have it towed back to Texas. Please help me understand why the dealership won't stand behind a safety recall or what one person I spoke with called a campaign recall, which ever! That I never received notice about this recall. I hope the "President" or the "President of the Company" will step up and help, after all we as Citizens don't have a problem spending our hard working money on purchasing these vehicles from the dealerships, to have things like this to happen out of our control. Thanks for at least Listening. GOD BLESS...INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2016 Kia Optima. The contact stated that while driving at 60 MPH, the vehicle stalled with the check engine light illuminated. The brake pedal was depressed, and the steering wheel seized. The contact was able to pull over to the side of the highway and contacted the Highway Patrol for assistance. The contact associated NHTSA Campaign Number: 18V907000 (FUEL SYSTEM, GASOLINE, ENGINE); with the failure; however, the VIN was not included in the recall. The vehicle was towed to the residence. The dealer was not notified. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 105,000.

The contact owns a 2016 Kia Optima. The contact stated that while driving at an undisclosed speed, the vehicle shuddered. No warning lights were illuminated. The vehicle was taken to a dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and stated that the knock sensor needed to be installed prior to the failure for the engine replacement to be covered under warranty. The failure mileage was approximately 143,000.

In order to repair the recalled equipment on the vehicle the dealerships and Kia want us to pay for them to open the trunk ($280/hour service fee to remove the back seat to gain access to the trunk and then return the back seat once completed). If the trunk latch was NOT broken to begin with they would not have to remove and replace the back seat of the car at $280/hour you would be able to push the button and open it. I don’t feel it is the car owner responsibility to pay for that access to the trunk.

For a second time, the window goes off the runner and will not operate. This happened to the drivers side window and the rear drivers side window. The only option is to return to the dealership and have the part replaced to allow the window to move up and down, This is a safety hazard and fails state inspection if the windows will not move up and down. This is a safety recall.

These cars have a known issue for burning oil the motor thats in my car was recalled for same issue but they are not trying fix my car under that recall of the bad motor that they did recall

The engine is a problem and all I’m ever told us “ this vehicle is know to have engine problems. This is dangerous to have in the road. Kia is aware of this. Why sale the vehicle knowing this and not disclosing this info to the consumer upon purchase. There is no truth in lending. It’s plain sight robbery. What if I’m far from home and stranded because vehicle set fire or broke down in hazardous condition weather. I constantly needing oil changes because of this engine. The dealership is aware. They tell me to trade it in or get rid of it because it’s going to go for a fact. I’ve never missed oil changes. I put oil every time the oil indicator light comes on. Now for the 3rd time the check engine light is on. 2 times for misfire code. The vehicle engine holds sludge no matter how much you get oil changes. The mechanic told me this year make and model is known for this very fact. I want my money back. Kelly blue book don’t give enough. I was scammed into this car but I managed to pay it off. A car the sales person scammed me and wouldn’t take the vehicle back. I complained to the general manager. They always act like he wasn’t available. They kept claiming new ones started. After almost a year of those games I had to move and the case never got solved. But even when I complained their maintenance person stole my rims. They told me prove it. Just all bad experience. I just want my money. Even if they gave me another engine. It’s still going to be the same problem. A bad engine. 2016 Kia optima’s should not have been continuously sold with them knowing it has bad engines. Even the headlights don’t work. Very dim. Car smells like burning fumes when driving. Please please help. This isn’t fair lending practice. People trust them and they are dishonest sellers.

The engine stalled without warning while I was pulling out of my driveway into the street, creating an unsafe condition due to sudden loss of power. After waiting briefly, the vehicle restarted and was moved back into the driveway. It was towed the following day due to loss of confidence in safe operation. The vehicle was diagnosed with engine failure consistent with known defects affecting Kia Optima vehicles equipped with Theta II engines. Kia denied coverage under the extended engine warranty / class action settlement solely because the KSDS (PI1802 ECU update) had not been installed prior to the failure. As the second owner, I was never notified of this update before the incident and had no opportunity to complete it. This failure was sudden, unanticipated, and safety-related. I am submitting this complaint to document an engine stall and loss of power condition posing a safety risk.

The car starts and drives with other keys in ignition

My vehicle’s engine was previously approved for replacement under the lifetime engine warranty associated with the settlement, confirming that my vehicle falls within the covered class. However, I am now experiencing significant difficulty obtaining assistance regarding secondary damage that directly resulted from the engine failure, specifically the failure of the starter and related operability issues. Despite multiple attempts to resolve this matter through the dealership and warranty channels, I have been repeatedly redirected without meaningful assistance or clear resolution. I have also encountered discrepancies within the online settlement VIN verification tool, which appears inconsistent with Kia’s prior acknowledgment of my vehicle’s settlement-related coverage.

While driving my 2016 Kia Optima, the vehicle experienced a sudden and complete loss of engine power and stalled without warning. At the time, I was Door Dashing for income. The engine seized and the vehicle came to an immediate stop in the middle of 4925 Wolf Creek Dr SW, Atlanta, GA, a narrow two-lane road with limited street lighting. I was forced to remain stopped in the roadway in darkness for over an hour while multiple oncoming vehicles passed by, creating a serious safety risk. The vehicle could not be restarted and had to be left on the roadside overnight. The following day, the vehicle would only start briefly when jump-started, ran for approximately 15 seconds, and shut off again. It could not move and was towed to an authorized Kia dealership. At the dealership, technicians jump-started the vehicle, performed diagnostics, added engine oil, cleared codes, reset adaptive values, and conducted a test drive. During that test drive, the engine seized again, and the vehicle had to be towed back. Kia approved a full engine replacement under its extended engine warranty, acknowledging engine failure consistent with known defects. However, after the engine replacement, the vehicle would not start at all. Kia stated oil intrusion from the failed engine damaged electronic components, leaving the vehicle non-operational. Kia denied coverage for the resulting damage and issued an estimated $6,000 repair bill for engine harness, injector sub-harness, and ECU replacement. The vehicle remains inoperable following an approved warranty repair. This incident involved sudden loss of propulsion while driving, occurred without warning, resulted in repeated engine seizure, and left the vehicle disabled in traffic at night. This appears consistent with known Kia engine defects and presents a serious safety concern that warrants investigation.

The contact owns a 2016 Kia Optima. The contact stated that while driving approximately 40 MPH, a knocking sound coming from the engine compartment was heard, and the check engine warning light illuminated. The contact further stated that while driving at approximately 80 MPH, with the cruise control mode engaged, the vehicle started to stall and failed to exceed 30 MPH. The contact stated that the cruise control became inoperable, and the check engine warning was flashing. The vehicle was restarted; however, the vehicle continued to hesitate and failed to exceed 30 MPH while driving. The dealer was contacted, but the vehicle was not diagnosed or repaired. The contact was referred to the NHTSA hotline for further assistance. The manufacturer was not made aware of the failure. The approximate failure mileage was 70,000.

Car is burning a lot of oil, took to dealer went through several tests and they claim burning 1.5 quarts was within limit for 1000 miles. Then started getting misfire codes and car went into limp mode a couple of times. They said to replace spark plugs because they were fouled and clean injection. Performed those requested actions, then 45k later getting misfire codes again, took to another dealer they said plugs are fould and clean injection again. Asked them to provide a permanent fix for the issue so the car does not keep fouling out the plugs and they said the only way to fix was to replace the motor. I asked, since you have no guaranteed fix why don't you replace the defective motor under warranty. They said because it is not locked up or throwing a specific code detecting a knock in the motor. So I said the motor will have to completely fail before a replacement would be approved they said yes (basically suggesting I somehow blow up the motor). This is wrong, a product under warranty from manufaturer and cannot be fixed without replacing the part should be covered. I do not know what my options are at this point, the milage warranty has run out and they will not do anything to fix it, just bandaids until it dies. the dealers would not put it in writing only verbally telling me.

The engine lost cylinder 3, piston came loose and broke the spark plug. This happened because the rod bearing came loose which has been a known issue with Kia. There’s already been a class action law suit, and recall with warranty. Now the Kia dealership in Lynchburg has refused to honor this warranty. Stating they can’t do the required rod bearing clearance test because the engine doesn’t have compression. The engine has no compression because the rod bearings came loose and shoved the piston into the head.