2020 Kia Niro: check engine light

Filed Aug 31, 2026 · Engine · 98,000 miles · CA

The contact owns a 2020 Kia Niro. The contact stated that while driving 79 MPH, the thermostat displayed that the engine was running hot and there was white smoke coming from the front of the vehicle, with the check engine warning light illuminated. Upon inspection, the contact became aware that a hose underneath the radiator was disconnected, and coolant was leaking from the hose, and the dipstick had dislodged into the engine. The contact stated that while accelerating from a complete stop or while decelerating, the vehicle jolted forward. The local dealer was contacted; however, the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 98,000.

Filed Apr 24, 2026 · Engine · NY

I had my oil changed in Dec. 2025. I drove 1000+ miles w/no issue. Engine suddenly seized w/no engine light warning. Oil dumped all at once. Kia refuses to cover under warranty. THIS HAPPENED TO MY CAR: NTSA announced it had launched an investigation into Hyundai Motor Company and Kia Motor Company for problems with their oil pans and oil drain plugs... consumers have filed complaints their engine’s oil drain plug falls out, causing all the oil to drain out of their engine while driving. In multiple tests the oil drain plug was tightened according to factory torque specifications and the tightening was well documented. Yet, testing shows in multiple cases that while driving, the oil drain plug falls within a few thousand miles after the service. In those cases, the crankcase drained completely. The Hyundai and Kia drain plug falls out due to inferior oil pan material and the drain plug gasket. The testing and investigations appear to show that the oil drain plans are made with THIN METAL AND THE DRAIN PLUG MOUNTING IS POORLY REINFORCED. In addition, the oil pan is coated with a thick paint coating the bonds the gasket to the pan, so the gasket does not come off when the drain plug is removed. That gasket issue alone is not why the oil drain plug falls out, but it is a factor in the chain of events. The oil pan is the biggest problem Apparently, the thin metal, along with engine vibrations and expansion/contraction tend to loosen the drain plug without any other intervention. the federal safety agency is investigating this as a factory defect ... The problem is two-fold. First, even if the repair shop properly torques the drain plug, the oil drain plug falls out on its own. The customer then blames the shop for shoddy workmanship. Second, Hyundai and Kia dealers are telling customers that servicing their vehicle at an aftermarket shop automatically voids their factory warranty. This is totally false & actually illegal under the terms of the Magnuson-Moss Warranty Act.

Filed Mar 25, 2024 · Transmission · 27,500 miles · MD

The contact owns a 2020 Kia Niro. The contact received notification of the federal safety agency Campaign Number: 23V534000 (Power Train) however, the part to do the recall repair was not yet available. The contact stated that the check engine warning light was illuminated. The vehicle was towed to the dealer, where it was diagnosed, and the dealer determined that the failure was related to the recall. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and confirmed that the part was not yet available. The failure mileage was approximately 27,500. Parts distribution disconnect.

Filed Nov 8, 2022 · NJ · fire

I first bought the car brand new from the car dealership and the first problem was a check engine light came on when I bought it. I took it to the car dealership and could not find the problem. I bought the car in December 2020. And off and on the check engine light comes and goes. And they could not find the error. Lastly about two weeks before the car caught on fire. It was service for oil change and a catalytic converter replacement. After that while I was driving on the parkway in New Jersey I heard a loud bang in the engine and I pulled over and I saw a fire starting underneath the engine. The whole car is consumed in fire. The fire department came and put it out.

Filed Sep 18, 2022 · Engine · PA

My Niro has been having issues with sputtering, jerking, chugging, and feeling like it’s about to stall. Sometimes it happens right when I start the car and sometimes it happens while I am driving. The check engine light just started coming on yesterday. I believe the transmission is faulty and have spoken to or taken it to the dealer with this same issue multiple times as it is covered under warranty. They keep telling me that’s just how the car drives but in the 8 cars I’ve owned in my life, I have never had a car that behaves this way before. An internet search of “Kia niro transmission problems” proves that this is a common and known issue with this car that Kia is doing nothing to resolve. I have a daily 20 mile commute to work and feel incredibly unsafe driving my car and letting my teenage daughter drive it.