Is the 2018 Kia RIO reliable?

The 2018 Kia RIO has 39 complaints filed with NHTSA (1.0x the segment average). Our reliability verdict: average. Most common issue: ENGINE problems.

What are common problems with the 2018 Kia RIO?

Top problems: ENGINE (15 complaints, avg repair $500); OTHER (5 complaints, avg repair $500); ELECTRICAL (4 complaints, avg repair $500). Issues typically appear around 50K miles.

Are there any recalls on the 2018 Kia RIO?

Yes, there are 1 recall(s): LATCHES/LOCKS/LINKAGES:TRUNK LID:LATCH. Contact any Kia dealer to verify if recalls have been completed on your specific vehicle.

How much does it cost to fuel a 2018 Kia RIO?

The 2018 Kia RIO gets 32 MPG combined. At current US average gas prices, driving 12,000 miles per year costs roughly $1500. See the interactive fuel cost calculator on this page for state-specific pricing.

How much does it cost to insure a 2018 Kia RIO?

Estimated US average full-coverage insurance for the 2018 Kia RIO is approximately $1,607/year (sedan-midsize class). Actual quotes vary heavily by state, driver age, driving record, and credit — see the interactive insurance estimator on this page for state-specific pricing.

2018 Kia RIO

Problems, Recalls & Reliability Report

Average

Quick Summary

The 2018 Kia RIO has 39 owner complaints filed with NHTSA — that's 1.0x the segment average of 38. The most common issue is engine problems (38% of all complaints), specifically: 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.. There is 1 recall issued for this model year. ⚠️ 3 fire reports filed.

3 fire reports 4 crash reports 2 injuries

Total Complaints

Recalls Issued

—/5

Safety Stars

1.0x

vs Segment Avg

Known Problems(top 5 of 8)

ENGINE

15 complaints

38%

• 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.
• Excessive oil consumption 1 quart every 1000 miles. The brake light socket overheats causing fast bulb burn outs.
• Excessive engine oil consumption which has caused car to enter limp mode

Typical onset: 50K miles Est. repair: $500🔥 2 fire reports💥 1 crashes

“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.”

— NHTSA complaint filing

Recalls (1)

LATCHES/LOCKS/LINKAGES:TRUNK LID:LATCH09/08/2021

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."

Risk: A person inside the trunk compartment may become trapped, increasing their risk of injury.

Fix: Dealers will replace the trunk latch assembly, free of charge. Owner notification letters were mailed on February 10, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC216.

Fuel Cost Calculator for 2018 Kia RIO

Live EIA prices

Annual miles driven: 12,000

Your state (affects local gasoline price)

Per year

$1,500

Per month

$125

Per mile

12.5¢

MPG

City driving (worst-case MPG)

$1,715/yr

Highway driving (best-case MPG)

$1,298/yr

Based on EPA fuel-economy ratings and EIA weekly retail prices (2026-07-20). Real-world cost varies with driving style, trim/engine, terrain, and traffic.

5-Year Gas Price History

EIA weekly retail data · 2021 → today

Show:

Current

$4.00

5-year low

$2.78

5-year high

$5.01

Since 2021

+27%

Source: US Energy Information Administration weekly retail gasoline prices.

Estimated Insurance Cost for 2018 Kia RIO

Estimate only, not a quote. Modeled from NAIC + HLDI averages for a hypothetical 35-year-old driver with clean record + full coverage. Your actual quote depends heavily on your age, driving history, credit, ZIP code, and insurer.

Your state (affects local premium average)

Full coverage / year

$1,607

Full coverage / month

$134

Liability only / year

$611

vs US avg

-4%

How this estimate is calculated

US base full-coverage premium$1674

× state (US)1.00x

× vehicle class (sedan-midsize)0.96x

× theft risk1.00x

× safety rating1.00x

× vehicle age1.00x

= Full coverage estimate$1607

Coverage assumed: 100/300/100 liability + comprehensive/collision, $500 deductibles. Data sources: NAIC 2024 + HLDI loss studies.

Maintenance & Warranty

Recommended Kia RIO Service Intervals

Oil change

8K mi / 12 mo

Tire rotation

8K mi

Brake fluid

24 months

Transmission fluid

60K mi

Engine coolant

60K mi

Spark plugs

90K mi

Cabin air filter

15K mi

Engine air filter

30K mi

Differential (AWD/4WD)

60K mi

Turbo engines (Optima 2.0T, Sorento 2.5T) may benefit from more frequent oil changes.

"Severe service" conditions (heavy towing, extreme temps, city stop-and-go) typically halve these intervals. Always consult your vehicle's owner's manual for the authoritative schedule.

Kia New-Vehicle Warranty Coverage

Bumper-to-bumper (basic)

5 yr / 60K mi

Powertrain

10 yr / 100K mi

Hybrid/EV battery

10 yr / 100K mi

Corrosion (rust perforation)

5 yr / 100K mi

Roadside assistance

5 yr / 60K mi

10 year powertrain not transferable to subsequent owners

These are the terms for a new Kia. If you're buying a used 2018 RIO, remaining coverage is usually pro-rated from the vehicle's original in-service date. Not all coverage transfers between owners — check with a Kia dealer for VIN-specific remaining warranty.

Estimated Repair Costs

ENGINE(~50K mi)

$500

OTHER(~50K mi)

$500

ELECTRICAL(~50K mi)

$500

AIR BAGS(~50K mi)

$500

LIGHTING(~50K mi)

$500

Estimates based on average reported repair costs. Actual costs vary by location, shop, and severity.

🔍 Pre-Purchase Inspection Checklist

Based on 39 owner complaints for this specific year, here's what to check or ask about:

☐
ENGINE: 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.
Typically appears around 50K miles. Repair cost ~$500
☐
OTHER: 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.
Typically appears around 50K miles. Repair cost ~$500
☐
ELECTRICAL: 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]
Typically appears around 50K miles. Repair cost ~$500
☐
AIR BAGS: I HIT A DEER HEAD ON GOING 74 MPH ON THE PENNSYLVANIA TURNPIKE. SEVERE FRONT END DAMAGE. AIRBAGS DID NOT DEPLOY
Typically appears around 50K miles. Repair cost ~$500
☐
RECALLS: Verify all 1 recall have been completed — free at any Kia dealer
☐
General: Get a pre-purchase inspection from an independent mechanic ($100-$200)