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 2015 Kia Rio owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owned a 2015 Kia Rio. The contact stated that while the friend was driving approximately 70 MPH, the vehicle suddenly began to lose automotive power, and smoke was seen coming from under the hood. The vehicle was parked and the friend exited the vehicle and discovered flames coming from the engine compartment. The fire department was called to the scene and extinguished the flames. The vehicle was destroyed and later towed away to a nearby towing facility. A fire and police report was taken at the scene. The cause of the failure and fire was not determined. The manufacturer and local dealer were not contacted. The failure mileage was 118,000.
The contact owns a 2015 Kia Rio. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, and the contact was informed that parts were not yet available. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and informed the contact that reimbursement for a rental vehicle would be provided. The failure mileage was approximately 80,000. Parts distribution disconnect.
The contact owns a 2015 Kia Rio. The contact stated while driving 55 MPH, the vehicle started jerking and the contact smelled an oil burning odor coming from the vehicle. The vehicle lost motive power with the check engine warning light illuminated. The contact pulled over and the vehicle was towed to an independent mechanic to be diagnosed. The mechanic stated that the engine was misfiring, and that the engine needed to be replaced. The contact was referred to the dealer for assistance. The vehicle was towed to the dealer and the dealer confirmed the misfire and stated that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 139,287.
tHE ENTIRE CAR FAILED. cAUGHT ON FIRE FROM THE CONSOLE AND PASSENGER SEAT WHILE DRIVING ON 1-15 . 8.15.2025 . Car filled wit black moke and fire.l was driving blind. brakes failed, power failed, burning the entire time. I somehow got out of burning vehicle and ran about 100 yards and watched the car explode!! Had car tuned up at Findlay Honda whede it was bought, 4 months ago, and they said it was fine... fire and police both told me i should not be here. Since, my life is in shambles. No car, no ID for a motnh, no license for 3 weeks. I bought car in 2023--- car was recalled in 2020. But was it and if it was, why did this EXACT problem occur? Someone must be responsible. On anxiety pillxs
The contact owns a 2015 Kia Rio. The contact stated that while driving at an undisclosed speed, the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the catalytic converter. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 53,000.
My vehicle consumes oil according to my Midas repair shop. I was unaware that when I brought it in for regular servicing, the engine was almost empty of oil according to the mechanic. It had been rattling upon acceleration and lacking power set on ECO, but I ignored it. Now, I have to check and add 1/2 to 1 quart of oil every 7-10 days as the dipstick shows oil is low and also very dark. There is also an engine warning light on most of the time but it comes up as from the Catalytic Converter which I doubt. The electrical system also flashes on the dash where the a/c settings and circulation fan are on ocassion but is corrected when the temp guage is adjusted 1 click toward the warmer setting. I was notified of the lack of oil on my visit to Midas for an oli change back in April 2023. The mileage was 110,000 then. …
After an oil routine change last May, my mechanic informed me that the engine had almost no oil. I had been hearing a rattle when accelerating at times and noticed the vehicle seemed to be having trouble when increasing speeds were necessary (entering higher traffic areas/highway on ramps). I had always met the scheduled oil change requirements since I bought it in 2019 but this was the first time I had been told of this. The mechanic told me that it has been known that these vehicles have this problem. I usually went to the same reputable mechanic. Now, as requested by the mechanic, I check the oil each week and find that I have to add 1 quart every 10 days or less to keep the engine from failing outright. The engine light periodically comes on and goes off again, but I was told it was possibly related to the catalytic converter. …
The contact owns a 2015 Kia Rio. The contact received notification of NHTSA Campaign Number: 23V652000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The vehicle was taken to a certified mechanic who diagnosed and determined that the failure was caused by the catalytic converter failure. The vehicle was taken to the dealer who confirmed that parts were not yet available. The dealer had not diagnosed the vehicle. The manufacturer was made aware of the issue. The failure mileage was unknown. Parts distribution disconnect.
The contact owns a 2015 Kia Rio. The contact stated while driving at approximately 40 MPH, the brake pedal was depressed, the steering wheel began shaking and the vehicle failed to slow down as intended. Additionally, when the accelerator pedal was depressed, the speed of the vehicle increased dramatically. The vehicle then stalled and was towed to an independent dealer where it was diagnosed that the oxygen sensor and air fuel ration sensor needed to be replaced. The vehicle was repaired but the failure persisted. The manufacturer was not notified of the failure. The failure mileage was unknown.
My Kia had be under an unresolved recall that can cause a fire, not only putting myself and my family, but other drivers at risk. I have a toddler who rides with me and would be extremely hard to get out of a car seat if the car caught on fire, as such I have reduced driving with them to ensure safety, but this is an issue that cannot continue and I should not have to put myself and others at risk. I cannot afford to buy a new car and should not be forced to due to a manufacturing issue
NHTSA investigations
Engine Fires
On March 29, 2019, the Office of Defects Investigation (ODI) opened two Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) to broadly investigate incidents of non-crash fires (regardless of origin or operational status of the vehicle) on various model year Hyundai and Kia vehicles.
Engine complaints in other Rio years
Frequently asked questions
How common are engine problems on the 2015 Kia Rio?
NHTSA has 27 complaints about the engine & cooling of the 2015 Kia Rio, 52% of the model year's 52 complaints. The component named most often is exhaust system (1 mentions).
Is there a recall for 2015 Kia Rio engine problems?
No. NHTSA lists no engine & cooling recall for the 2015 Kia Rio, though it has 1 recall 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 2015 Kia Rio engine problems start?
Half of the complaints with a recorded mileage happened before about 80,000 miles, and 21% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 8 fires and 1 injury 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.