NHTSA lists 1 safety recall and 28 owner complaints for the 2018 Kia Rio. Most complaints involve engine (15) and electrical system (5). The EPA rates it 32 mpg combined.
Kia Motors America (Kia) is recalling certain 2016-2018 Forte 4-door, Forte Koup 2-door, and 2018-2019 Rio 4-door vehicles. The trunk latch may become damaged, preventing the opening of the trunk from the inside. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 401, "Internal Trunk Release."
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Rio model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 2001 | 224 |
| 2002 | 152 |
| 2003 | 84 |
| 2004 | 50 |
| 2005 | 37 |
| 2006 | 74 |
| 2007 | 46 |
| 2008 | 49 |
| 2009 | 41 |
| 2010 | 26 |
| 2011 | 24 |
| 2012 | 54 |
| 2013 | 153 |
| 2014 | 52 |
| 2015 | 52 |
| 2016 | 79 |
| 2017 | 31 |
| 2018 | 28 |
| 2019 | 22 |
| 2020 | 27 |
| 2021 | 15 |
| 2022 | 12 |
| 2023 | 12 |
“The Components that have malfunctioned are the airbags, exaust system, electrical systems, sensors, gaskets, and a few other things. We had 5 failed clockspring repairs. The first (3?) under warranty, we paid for another when they said it was our fault, then that mechanic said that it needed to go back to a dealership because it was defective. I advocated for months for it to be evaluated. No one at kia helped me despite this being a repeat warranty issue. I finally found a shop that would waive a diagnostic and he confirmed the issues atleast with the airbags- however in order to fully diagnose the engine they also needed to replace parts in order to perform an oil consumption test. While the represenative did approve the repairs for the airbag, they have not given the dealership an answear about ANYTHING engine related- we need an answear if we should be waiting or having it towed out of there. They have had it for a month. We repeatedly try to get ahold of them but they ignore when we call or email them. The represenative also made sexist comments about "being a woman" and its clear our safety concerns are not being handled serioursly. Just like with the…”
“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. The car burns through 20 quarts of oil in between changes, it has no leaks. It has so much carbon buildup. They replaced a gasket and thats another part that has continually needed replaced but they did not fix the issue that has caused it to go bad. When the small mechanics hear about the issue they are confused because the type of motor I have was recalled in other cars for the same issues. My car just recently surpassed the warranty, I should not be having to still fight the dealership to have a car in working condition for the same problems they kept putting bandaid on during warranty repairs.”
“Took my car in as the airbag light on the dashboard kept turning on and off— with or without a passenger in the seat. The dealership ran a diagnostic inspection and turns out that the passenger side OCS Mat and ECU are faulty and need to be replaced (DTC codes B176700 and B17672F). I have not been in a crash and there are no obvious signs of damage to the seat that might have caused this. There’s no active recall for this but it does seem that one other person has reported issues with the passenger airbag system and I know other Kia models have had recalls in the past. The car had about 90,000 miles on it when this issue started and it’s up to date on all maintenance but I was quoted over $3000 to fix this which is essentially the value of my car now, totaling the vehicle even though it has no other issues. This is a major safety issue, when you buy a car you expect that the airbags and corresponding electrical equipment last you for the life of the car or until there is an accident.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Rio Auto (S6), 4 cyl, 1.6 L · Front-Wheel Drive | 28 | 37 | 32 | $2,000 | 280 |
| Rio Man 6-spd, 4 cyl, 1.6 L · Front-Wheel Drive | 29 | 37 | 32 | $2,000 | 277 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
1 safety recall as of Oct 28, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 28 complaints with NHTSA. The most-cited components are engine (15), electrical system (5), air bags (5). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2018 Kia Rio at 32 mpg combined, depending on engine and drivetrain (2 versions rated).