23
Complaints Reported

Complaints by Component

ENGINE
8 complaints
My 2018 Kia Rio is burning 2 quarts of oil every 800 miles, confirmed by a Kia dealership through an official oil consumption test. The issue first started around 110,000 miles and has progressively gotten worse. I have owned the vehicle since it had 40,000 miles, and I have always had the oil changed on time and maintained the car properly. Despite proper maintenance, the engine gives off a strong burning-oil odor, and smoke enters the cabin while driving. This happens consistently, not occasionally. Because the engine loses oil so quickly, it can run dangerously low without warning, creating a risk of sudden engine failure while driving. I regularly transport my [XXX] child, and the fumes entering the cabin are unsafe to breathe. Kia Customer Care denied goodwill assistance due to the number of previous owners and the mileage, even though the dealership confirmed abnormal oil consumption and noted this is a known issue with these engines. Kia has refused to assist repairing or replacing the engine, leaving me driving a vehicle that is unsafe and at risk of failure. The excessive oil consumption, smoke entering the cabin, and the potential for engine failure create a serious safety hazard for occupants and other drivers. I am requesting NHTSA to investigate this issue, as it appears to be a recurring safety-related problem with these engines. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Nov 22, 2025
2018 Kia Rio – severe oil consumption leading to low compression (30 PSI on Cylinder 2) and engine failure. Dealership installed incorrect non-OEM spark plugs prior to failure. Kia denies warranty coverage although this matches known engine defects in other Kia models
Oct 12, 2025
My 2018 Kia Rio S (VIN [XXX] ) suffered sudden engine failure at approximately 84 000 miles. I pulled over immediately when the oil light came on, but the engine began rattling and was later diagnosed by the dealer as a bearing/seizure failure requiring full engine replacement (estimate ≈ $15 865). This vehicle uses the 1.6 L Gamma II GDI engine, which is the same engine family already included in Kia’s “Engine Litigation II” settlement and KSDS (Knock Sensor Detection System) program for Forte, Soul, and other models. However, Kia claims the 2018 Rio is not covered by the extended warranty even though the failure mode is identical (rod-bearing wear and oil starvation). I never received any recall or settlement notice. The lack of notification and exclusion of the Rio model leave owners unprotected against a known safety-related defect that can cause stalling or fire. I request NHTSA investigate inclusion of 2018 Kia Rio vehicles in the existing Gamma engine recall/settlement. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Oct 06, 2025
The contact owns a 2018 Kia Rio. The contact stated that while driving at an undisclosed speed, the vehicle stalled with the check engine warning light illuminated. The vehicle was restarted. The vehicle was taken to an independent mechanic, where it was diagnosed with a cylinder #1 misfire. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The dealer was contacted but the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 102,316.
Mar 05, 2025
MY CAR IS CONSUMING OIL
Nov 10, 2024
+ 3 more complaints for this component
UNKNOWN OR OTHER
3 complaints
My vehicle was stolen while parked with a club on the steering wheel then damaged and abandoned. I was without a vehicle for a month during repairs. It has been reported on the news that Kias are easily stolen due to the type of ignition system. A recall to fix this is need immediately!
Dec 23, 2022
Crash: 1
I received notice on 2/10/22 that there was a remedy part for my 2018 Kia Rio. The letter said it was a recall part involving a latch that opens my trunk from the inside. I tried repeatedly since then to make an appointment at Glendale, CA or Alhambra, CA Kia dealerships thru the Kia website but the website malfunctions every time I make an attempt. I tried at least 3 times to call, and the service department did not answer. On 7.20.22, I sent a request through the website chatbox, asking for an appointment and so far, no response.
Jul 21, 2022
My vehicle was recalled for a "interior trunk release" issue. My trunk will not open at all anymore. Kia's website does not allow me to schedule an appointment due to glitches on website. I also tried calling Kia and got no answer.
Mar 01, 2022
LATCHES/LOCKS/LINKAGES
2 complaints
The contact owns a 2018 Kia Rio. The contact received notification of NHTSA Campaign Number: 21V622000 (Latches/Locks/Linkages) however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not available. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.
Dec 06, 2021
The contact owns a 2018 Kia Rio. The contact stated while attempting to open the rear trunk a clicking noise was heard coming from the trunk as the trunk failed to open. The contact attempted multiple times to open the trunk but it would not open. The contact took their vehicle to a local dealer who inspected the vehicle and diagnosed the failure as the latch for the trunk was broken and that the only way to repair the failure was to break the latch from the inside of the trunk. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 17,570.
Jun 22, 2021
STRUCTURE
1 complaint
Paint is peeling
Sep 09, 2025
ENGINE AND ENGINE COOLING
1 complaint
The contact owned a 2018 Kia Rio. The contact stated that while driving on the highway at 85 MPH, the engine emitted abnormal noise with no warning lights illuminated. The contact proceeded to exit the highway and enter a gas station parking lot, and upon exiting the vehicle, it was apparent that the engine had begun to catch on fire. The location of the fire was the front engine compartment. The fire was extinguished by bystanders using fire extinguishers. A fire department report was not filed. A police report was filed. The vehicle was destroyed. No injuries were reported. The local dealer was contacted however, the vehicle was not diagnosed as the vehicle was reported a total loss. The manufacturer was notified of the failure. The approximate failure mileage was 110,000.
Apr 04, 2025
Fire: 1
SERVICE BRAKES,ENGINE,FUEL/PROPULSION SYSTEM
1 complaint
My 2018 Kia Rio actually lit up on fire as I was driving down the highway on way to work. As I drove down the highway, I noticed that I had trouble using the brakes. It seemed as if they were working one second and then not working the next. At that time, I noticed fire coming from underneath the car and I was able to get the vehicle to the side of the road. As I was exiting the vehicle, the flames were coming up on either side of the driver and passenger doors. Within the next couple minutes the car exploded. Fire rescue put out the fire and the interstate was closed to all traffic. Since the incident, my family and I have done research and found several incidents with very similar stories with regard to what happened to the vehicle. I believe it is well documented that there is a problem with certain Kia models that involves some kind of deficiency in the brake line that can cause the puncture/severing of fuel line. The end result can include "loss of braking ability" and "potential fire hazard". Reading these other incident reports from other families was exactly the way the vehicle reacted in my own incident. I could've lost my life in this incident and I wholeheartedly believe that liability lays with the manufacturer. My vehicle was very well maintained. Regular maintenance included inspections, tires, oil changes and more. There is NO reason why this should've occurred. I have tried to contact the Kia dealership where I purchased the car, the service manager, and other Kia dealerships in the area (Mufreesboro, TN) and have been told there is absolutely nothing I can do and I find that unacceptable. Understand that there are witnesses, photos, new coverage photos etc. I sincerely hope to get a response on how to pursue damages and to ensure this doesn't happen to anyone else.
Jun 09, 2024
Fire: 1
UNKNOWN OR OTHER,ENGINE
1 complaint
For the past year and few months I’ve been having to do an oil change every two weeks because of how fast the engine is burning the oil. Several times I arrive to the shop to find the oil pan is completely empty causing issues with my engine beginning to make strange noises that are concerning. The dash light does not come on to notify me that there is no oil. I’m sure the damage is severe because I have had the check engine light come on a couple times and having to fix it because of this. Other Kia drivers have had this issue with other models, including this one.
Dec 08, 2023
UNKNOWN OR OTHER,ELECTRICAL SYSTEM
1 complaint
Auto theft alarm listed as standard. There is NO THEFT DETECTION AT ALL. There is only a bogus flashing led that does nothing when parked. This is fraud.
Jan 11, 2023
EXTERIOR LIGHTING,ENGINE
1 complaint
Excessive oil consumption 1 quart every 1000 miles. The brake light socket overheats causing fast bulb burn outs.
Dec 15, 2022
POWER TRAIN,ENGINE,FUEL/PROPULSION SYSTEM
1 complaint
On 10/02/2021 - Was at a stop, put car in drive press the peddle car accelerated at high speed, miss another car and hit tree. Accident cause by acceleration issue with KIA Rio. Need advice on how to get KIA to replace total vehicle. Auto Insurance is just calling it a accident.
Oct 14, 2021
Crash: 1
Injuries: 1
AIR BAGS
1 complaint
I HIT A DEER HEAD ON GOING 74 MPH ON THE PENNSYLVANIA TURNPIKE. SEVERE FRONT END DAMAGE. AIRBAGS DID NOT DEPLOY
Dec 27, 2020
Crash: 1
STEERING
1 complaint
OUR 2018 KIA RIO WAS BOUGHT NEW. I WAS TRAINING MY WIFE TO PARALLEL PARK WHEN IT HAD ONLY 100 MILES ON IT. AS SHE KEPT REPEATING THE PROCEDURE OF PARALLEL PARKING, THE STEERING WHEEL LOCKED UP AND WOULD NOT ALLOW MOVEMENT UNTIL THE ELECTRICAL CONTROL COOLED DOWN. WE THEN TOOK THE CAR TO THE DEALER, BOB UTTER IN SHERMAN, TEXAS WHERE WE HAD PURCHASED THE CAR TO HAVE THEM DETERMINE THE PROBLEM AND FIX IT. THEY DID NOTHING TO ADDRESS THE PROBLEM AND TOLD US THAT THERE WAS NOTHING WRONG WITH THE CAR! TERRIBLE DEALERSHIP! SO NOW, AFTER THE CAR IS NEARLY THREE YEARS OLD AND WITH LESS THAN 300 MILES OF USE, WE ARE HALF-WAY AFRAID TO USE THE CAR AND KEEP IT IN OUR GARAGE ONLY TO USE IT TO GO CHECK ON OUR MAIL. IT STILL HAS ITS ORIGINAL HALF-TANK OF GAS IN IT AND HAS NOT YET HAD AN OLD CHANGE. PLEASE ADVISE.
Nov 27, 2020
ELECTRICAL SYSTEM,EXTERIOR LIGHTING
1 complaint
ON TWO OCCASIONS MY VEHICLE (IN MOTION) HAS GOTTEN SMOKE, I SMELLED BURNT, AND IT WAS ELECTRIC SHOCK WHEN I TOUCHED THE BOARD, I HAVE ALREADY REPORTED IT TO THE AGENCY THAT CORRESPONDS TO ME, HOWEVER THEY HAVE NOT SOLVED MY PROBLEM, I AM AFRAID THAT IT COULD BURN MY VEHICLE, MY PHONE NUMBER IS [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
Apr 02, 2019
4.9/5.0
68 reviews

Frequently Asked Questions

How many problems does the 2018 KIA Rio have?

The 2018 KIA Rio currently has 23 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2018 KIA Rio?

The most common problems reported for the 2018 KIA Rio are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2018 KIA Rio problem data come from?

All problem and complaint data for the 2018 KIA Rio comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.

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