Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2021 Kia Telluride owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2021 Kia Telluride. The contact stated while driving approximately 65 MPH there was a loud rattling sound that came from under the vehicle. There were no warning lights illuminated. The contact then pulled over safety. The contact stated there were parts of the vehicle that fell onto the highway. When the contact was on the side of the vehicle they checked under the hood, and located smoke and fire from the engine. The contact exhausted the flames with liquid from a nearby driver. The CHP and fire arrived on the scene; however, the fire was extinguished by the time of their arrival. There was no CHP report filed that the contact was aware of. There were no injuries or medical treatments needed. The vehicle was towed to the local dealer and diagnosed two pistons came from the engine, and it was a catalytic failure. The vehicle currently was being repaired. …
The contact owns a 2021 Kia Telluride. The contact stated that while the vehicle was parked and turned off, there was smoke coming from the vehicle. The contact stated that the engine located on the rear driver's side had caught on fire. The vehicle was extinguished by the Fire Department. A fire report was filed, and a fire report number was not provided. The cause of the failure was not yet been determined. A Police report was not filed. There were no occupants at the time of the failure. The dealer was not contacted. The vehicle was not diagnosed or repaired. The vehicle was towed to an impound lot. The manufacturer was made aware of the failure. The failure mileage was approximately 90,000.
The contact owns a 2021 Kia Telluride. The contact stated that while driving at an undisclosed speed, the contact noticed a trail of fluid leaking. No warning lights were illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with a warped oil filter. The contact was informed that the warped oil filter needed to be replaced. The vehicle was repaired. The contact later received a warranty extension notification detailing a similar failure description. The manufacturer was made aware of the failure, a case was filed, and a reimbursement claim remained pending. The failure mileage was approximately 93,157.
The contact owns a 2021 Kia Telluride. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The contact stated that the check engine warning light had previously illuminated; however, the warning light then turned off independently. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 63,000.
Driving on the highway when all the lights on the dashboard came on and heard a loud sound. Pulled over and noticed flames coming out. The front part of the car 911 was called. An incident report was made. The flames were out quickly. The car was towed and is at the dealership.
First there are holes in the block from a rod bearing coming off. It was leaking oil and started on fire. There are many recalls and law suits regarding this matter and we shouldn't be on the hook for putting a new engine in.
My wife had placed our two children in the car in their car seats. She attempted to start the vehicle by pressing the brake and the starter button. Though all the dome lights and other normal electrical items were on at the time, as soon as she attempted to start the car, it instantly went dead. There was no power to anything, and all the interior dome lights did not work. No matter how often she attempted, she could not start the vehicle, even with accessory mode. It was almost as if the battery had been suddenly removed from the vehicle. At no point was the car moved outside of park. My wife removed our two kids from the vehicle, and shortly after, they were secured in our other vehicle; without my wife being in the Telluride, the car turned on itself. All interior lights were on, and the car was functional. She found that while the radio was on, the HVAC that had been on was now off. …
Since November 2023, the car's engine has been burning oil. There are no leaks in the driveway. On January 8th (87,000 miles), I took the Kia Telluride for service at Mission Viejo Kia for a Check Engine light. They said the car had low oil and indicated that the cause was a leaking oil housing. They completed an oil change and added new oil. On February 19th (90,000 miles), the AC drain was clogged and water was entering the passenger side inside the vehicle. In addition to this fix, Mission Viejo Kia noted that the oil level was down to 1/2 quart. This was only 3000 miles since the last oil change. On April 6th (95,000) completed another oil change at Ramona Tire, where I was getting new brakes. They did note very low oil. June 24th (96,600 miles), the Telluride started rattling and stalling at lights. Upon inspection, Mission Viejo Kia determined it was due to low oil again. …
1. The engine consumed oil to where it soaked up all the oil in the engine likely as part of a piston ring failure. We have had it at the shop for the last 9 weeks, and cost to replace engine is $10,500 and because extended warranty explicitly wrote this out of the contract as this is a known issue and Kia has stated as such, but not a recall yet so nothing they will do to help. It is available for inspection, but we need the car back so likely not going to drag on much longer. 2. Yes, as no warning lights on the car came on, nothing out of the ordinary other than it just started acting weird and I took it in to get looked at, and was told there was no oil in the engine at all and this is known issue and engine is blown and we have to pay out of pocket to fix. …
On 12/24/25 the vehicle experienced the very same issue, on the highway, with my family in the car, coming from Christmas Eve festivities. The car decelerated and NO cel (check engine light) ever came on. when transporting to dealer, the car began rough idling like it wanted to die, but still no CEL. At this time, I am told there is a need for a new engine but no supporting documents or other diagnostic documentation has been shared with me and KIA at this time is refusing to resolve the issue under the powertrain warranty and the car is still under 80k miles (powertrain is until 100k) Additional Info: on Aug 5, 2025, the vehicle, with no warning lights or CEL present, the vehicle decelerated on the highway, putting me and my family in imminent danger (large truck behind us who narrowly missed hitting us) and after about 10 min the CEL came on. the vehicle would not drive above 45mph. …
Engine complaints in other Telluride years
Frequently asked questions
How common are engine problems on the 2021 Kia Telluride?
NHTSA has 70 complaints about the engine & cooling of the 2021 Kia Telluride, 19% of the model year's 373 complaints. The component named most often is exhaust system › emission control › catalytic convertor (1 mentions).
Is there a recall for 2021 Kia Telluride engine problems?
No. NHTSA lists no engine & cooling recall for the 2021 Kia Telluride, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2021 Kia Telluride engine problems start?
Half of the complaints with a recorded mileage happened before about 63,000 miles, and 40% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 4 fires and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.