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EnginePart report

2018 Kia RIO Engine Problems

Complaints
15about this part
Share
54%of 28 total for the year
Median mileage
102,316miles
Trend
RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.

NHTSA recorded 15 complaints about the engine of the 2018 Kia RIO, 54% of the 28 complaints for this model year. Where a mileage was given, the median is 102,316 miles. 1 of these say a crash was involved and 1 a fire, according to the filers.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“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. …”

NHTSA complaint #11700932, filed 2025-11

“The first problem part is the airbag. The clockspring was fixed twice under warranty. Then the dealership said they wont keep doing it and blamed me wrongly. I had a private mechanic repair the same part twice due to the code it was giving but it turns out thats not what's wrong with it. The entire airbag and electrical components are bad, that is why the two repairs the dealership as well as the private mechanic made did not work. We also have some engine problems they wont continue to fix because my warranty is now surpassed. …”

NHTSA complaint #11727159, filed 2026-03

“I've been having issues with the engine for a while I'm constantly getting oil changes and after getting the oil change I would still have to add oil in every 2-3 weeks. 2/14/2024 My Oil light came on back on after putting oil in 2 weeks prior. That day my Car stalled on the HWY all my dash lights( battery, engine and oil light flashed. Ive been to multiple mechanics shop such as Express oil and Midas and both have told me there is a recall on engine such as mines, I called Kia multiple times and they told me it wasn't. …”

NHTSA complaint #11589405, filed 2024-05

“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.”

NHTSA complaint #11559237, filed 2023-12

“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. …”

NHTSA complaint #11593284, filed 2024-06

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2023325%
202218%
2021213%
2020519%
2019627%
20181554%
20171135%
20163949%
20152344%
20142446%
20135335%
20122444%
2011729%
2010415%
2009718%
200837%
200712%
200623%
2005514%
200311%
200211%
200110%

Other parts of the 2018 Kia RIO

Air bags
5 complaints
Electrical system
5 complaints
Other or unknown
5 complaints
Exterior lighting
2 complaints
Fuel system
2 complaints
Latches, locks and linkages
2 complaints
Brakes
1 complaints
Engine cooling
1 complaints
Seats
1 complaints
Steering
1 complaints
Body and structure
1 complaints
Transmission and drivetrain
1 complaints

← All problems reported for the 2018 Kia RIO

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology