Last updated: 2026-10-10

2018 Kia Sedona Reliability Report
The 2018 KIA Sedona has a good reliability standing, well above other 2018 SUVs, but engine shutdowns tied to oil loss are the main risk.
Recalls
3
Complaints
44
Complaint Rate
N/A
Est. Repair Cost
$495
Annual Fuel Cost
$2,850–$3,150
Detailed Score Breakdown
Component-weighted complaints normalized by sales volume
Independent repair cost ratings
Recall count weighted by severity
Breadth of reported problem categories
The Verdict
Weakest of the four scored Sedona years, though still good, with engine failures from oil loss and airbag warning lights as its main complaints.
Top Issues to Watch
- ENGINE (16)
- ELECTRICAL SYSTEM (10)
- AIR BAGS (4)
Should You Buy the 2018 Kia Sedona?
Good, but the weakest of the four scored Sedona years. Against other 2018 SUVs it stands well above average, and independent repair-cost data puts model-wide upkeep at about $495 a year, against $647 for its class. The 2019 rates excellent, about the same, with fewer complaints and one fewer recall.
The engine is the concern. Owners report sudden shutdowns at highway speed, often with no warning light, sometimes after a knock and lost power. The stall also takes away power steering. Several engines seized after running low on oil, and failures cluster between 90,000 and 108,000 miles. Two owners describe engine-compartment fires. Power sliding doors are the other weak spot: one obstruction sensor failed and trapped a person. An airbag warning light that keeps returning after repairs shows up too.
Ask for service records showing oil level checks and any engine work. Run the sliding doors and confirm the airbag light goes out. Look up the three federal recalls, covering structure, electrical system and air bags, and confirm each was completed. The 2019 is worth pricing alongside this one.
Compared to the 2019 Kia Sedona, which scored 2 points higher.
Pros
- +Acceptable reliability score
- +$152 cheaper to maintain than avg minivans
- +Infrequent unscheduled repairs
- +Low major repair risk (10%)
Cons
- −Moderate recall count
- −ENGINE: Sudden shutdowns at highway speed, often with no warning light, are the main... (16 complaints)
- −ELECTRICAL SYSTEM: Power sliding doors are the most common electrical fault (10 complaints)
Compare 2018 Kia Sedona With
Common Problem Categories
Safety
LOW RISK- 3 manufacturer recalls issued
Other
HIGH RISK- ENGINE (16)
- ELECTRICAL SYSTEM (10)
Recall Overview
3
recalls on record
A moderate 3 recalls are on file for the 2018 Kia Sedona. Each one points to a specific safety or compliance issue identified by the manufacturer or NHTSA — check the list below before buying.
NHTSA.gov →Complaint Breakdown
44
complaintsSafety Incidents
1
Crashes
4
Fires
1
Injuries
0
Deaths
NHTSA 5/5 Stars
Data sourced from NHTSA complaint filings and manufacturer recall notices. Complaint narratives are owner-reported.
2018 Kia Sedona Recall Details
3 recalls have been issued for the 2018 Kia Sedona. All recall repairs are performed free of charge at authorized dealerships.
STRUCTURE, ELECTRICAL SYSTEM
Kia Motors America (Kia) is recalling certain 2015-2018 Kia Sedona vehicles equipped with a power sliding door (PSD). The PSD may not auto-reverse when its closing is obstructed.
Consequence
If the door closes on an occupant, there is an increased risk of an injury.
Remedy
Kia will notify owners, and dealers will reprogram the PSD module software, free of charge. The recall began on June 18, 2018. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC164.
AIR BAGS
Kia Motors America (Kia) is recalling certain 2017-2019 Sedona, Soul, Soul EV, 2017-2018 Forte, and 2017 Forte Koup vehicles. The Air Bag Control Unit (ACU) cover may contact a memory chip on the printed circuit board and damage the electrical circuit. Circuit damage may result in deactivated air bags that will not deploy in a crash.
Consequence
Air bags that do not deploy as intended can increase the risk of injury in a crash.
Remedy
Dealers will inspect the ACU, and either update the software or replace the unit, as necessary. Repairs will be performed free of charge. Owner notification letters were mailed March 21, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC226.
ELECTRICAL SYSTEM
Kia Motors America (Kia) is recalling certain 2015-2018 Sedona vehicles equipped with manually-adjusted front passenger seats. Over time, the Occupant Detection System (ODS) wiring harness located underneath the front passenger seat may break from the seat being occupied.
Consequence
If a child is in a child seat in the front seat, a broken ODS wiring harness will not prevent the front passenger air bag from deploying in the event of a crash, increasing the risk of injury to the child.
Remedy
Kia will notify owners, and dealers will remove the wire harness clip to prevent the wiring harness from breaking. If the harness is found damaged, the front passenger seat cushion will be replaced. These repairs will be performed free of charge. The recall began March 19, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC175.
Buying a used 2018 Kia Sedona? Check its history first
Engine problems lead owner complaints about the 2018 Kia Sedona, and 3 recalls were issued for it. A VIN check shows whether this car's recall work was done, plus accident, title, and odometer history.
- Accidents
- Open Recalls
- Title History
- Odometer Rollback
2018 Kia Sedona NHTSA Safety Ratings
Overall Safety Rating
Crash Test Results by Configuration (expand)
Gas Powertrain
Rollover risk: 13.0%
Safety Technologies
Kia SedonaRepair Costs & Maintenance
Maintenance Rating
4Maintenance rating: 4 out of 5Based on NHTSA complaint patterns, recall severity, and publicly available cost benchmarks.
Est. Annual Maintenance
$495
vs $647 avg for minivans
vs $652 avg for all vehicles
Repair Frequency
0.3
unscheduled repair visits per year
Severe Repair Probability
10%
chance of a major repair
Annual Cost Comparison
Category-level averages derived from publicly available industry reports (AAA, CarMD). Model-level estimates produced by Auto Reliability Index.
MPG & Annual Running Costs
Gas
19–21 MPG
Running cost: $3,350–$3,650/yr
Fuel + repair
17–18 city / 22–25 hwy MPG
Running cost includes EPA fuel-cost estimate and independent repair-cost data (repair cost estimated at model level). Excludes routine maintenance, depreciation, and insurance. Data as of 2018 EPA label cycle.
Gas trims
| Trim | Drive | Trans. | City | Hwy | Comb | Fuel Cost |
|---|---|---|---|---|---|---|
| Sedona SX 3.3L 6-cyl | Front-Wheel Drive | Automatic (S6) | 18 | 25 | 21 | $2,850 |
| Sedona 3.3L 6-cyl | Front-Wheel Drive | Automatic (S6) | 18 | 24 | 20 | $3,000 |
| Sedona SXL 3.3L 6-cyl | Front-Wheel Drive | Automatic (S6) | 17 | 22 | 19 | $3,150 |
Used Buying Checklist
Key things to inspect or verify before purchasing a 2018 Kia Sedona.
Pull the dipstick cold; low oil or sludge points to the engine oil-loss pattern.
Ask for oil change records and whether oil needed topping off between changes.
Listen for a knock at idle and under hard uphill acceleration on the test drive.
Check the coolant level and sniff for antifreeze, a reported head gasket warning sign.
Confirm the airbag warning light turns off after startup and stays off for the whole drive.
Cycle both power sliding doors repeatedly and test that the obstruction sensor stops and reverses them.
Ask whether the van has failed to start after sitting several days, and test the battery.
Inspect original Kumho Crugen tires for bulges and feel for shaking or pulling at highway speed.
2018 Kia Sedona Common Problems by Component
44 owner complaints grouped by vehicle system.
ENGINE
16 complaintsSafety-relatedSudden shutdowns at highway speed, often with no warning light, are the main pattern. Reports describe a knock or banging noise and lost power, then a stall that also takes away power steering. Several engines seized or broke after running low or dry on oil, and owners report heavy oil burning between changes. Failures cluster around 90k to 108,000 miles. Other reports cite a blown head gasket with a cracked block, or a fuel smell with white exhaust smoke. Two describe engine-compartment fires. Some owners say warranty claims were denied.
ELECTRICAL SYSTEM
10 complaintsSafety-relatedPower sliding doors are the most common electrical fault. The passenger door opens and closes on its own, and one obstruction sensor failed and trapped a person, then failed again after repair. Dealers often cannot reproduce the problem. Other reports describe intermittent no-crank starts, a dead battery after the van sits for 5-6 days, and a radio and rear camera that stop working. One report blames an airbag light on a damaged wiring harness. One engine-compartment fire and one crash with no airbag deployment are also filed here.
AIR BAGS
4 complaintsAn airbag warning light comes on and will not stay off. Owners describe many dealer visits, software updates, and replaced parts without a lasting fix, with the light returning soon after each repair. Dealers sometimes conclude the passenger airbag unit needs replacing, and one owner was refused coverage after the warranty ran out. One report says the airbags did not deploy in a crash while the light was on. Reports range from very early ownership to about 73,000 miles.
STRUCTURE (2 complaints)
STRUCTURE
2 complaintsPeeling paint and a stuck driver-side door make up the only two reports here, and they are unrelated. The door complaint describes it jammed in the closed position after its electric motor stopped working. A door that will not open is more than a cosmetic issue, since it limits how people can get in and out. With so few filings, this category shows no clear pattern.
WHEELS (2 complaints)
WHEELS
2 complaintsOriginal Kumho Crugen tires develop tread separation or shifted steel belts at low mileage, roughly 18,870 to 21,000 miles. Symptoms include rattling, shaking, and a steady pull to one side at highway speed. One owner was told the pull came from alignment and was turned away by the dealer before a tire shop found the belt damage. Both reports involve the factory-fitted tires, so the original set deserves a close look on any van that still has it.
UNKNOWN OR OTHER (2 complaints)
UNKNOWN OR OTHER
2 complaintsFuel economy falls below the rated figures in one report, averaging about 17 mpg against a stated 18-24 mpg on a nearly new van. A separate report describes road debris passing through the open front grille and damaging the A/C condenser. The owner says the grille does not shield the condenser and radiator well enough. Neither complaint involves a crash, fire, or loss of control.
SEAT BELTS (1 complaints)
SEAT BELTS
1 complaintMy [XXX] son pulled the seatbelt so tight it got wrapped around his neck. When I pulled over to unbuckle it, it was stuck. I turned the car off and on again to try and loosen it, but it didn't work. In the emergency, I had to cut the seatbelt with scissors. It's the passenger seatbelt in the second row, next to the window. I reported the incident to Kia in Puerto Rico by phone. They never called me back. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
SUSPENSION (1 complaints)
SUSPENSION
1 complaintSafety-relatedThere was a fire under my minivan as my husband was driving it, creating smoke and flames. He lost power to the van and had to coast to the right side of the highway where he came to a stop with the flames occurring. This is the family vehicle and I have small children. We had no warning lights or any indication that there would be a fire in my vehicle as the van had been running smoothly, and I had kept up with all recommended maintenance (see Carfax report). On July 31st, I was told by Kia America that there was a fire in the engine compartment and that it was inconclusive and they could not determine what started the fire. On August 15th, my father and husband went to Castrucci Kia (where the car was) and were shown that there were holes in the engine block, and the service representative Brandon stated that the engine failure had probably thrown some of the rods causing the holes in the lower engine block sparking a fire when the leaking oil hit the catalytic converter. My insurance was involved, but I was not able to obtain a settlement from them, but I kept up on all maintenance and adherence to Kia guidelines and my engine unexpectedly failed and caught on fire. I was told I would need a new engine at an approximate cost ranging from 12,000 to 15,000 dollars. I believe that my 2018 Kia Sedona's 3.3 L gasoline direct injection engine was manufactured defectively resulting in catastrophic engine failure, APPARENTLY puncturing the engine block, causing engine oil to leak and ignite a fire. Our attempts to address this critical issue with Kia have been met with significant resistance and delays. It appears that Kia refuses to take responsibility. There has been an escalating number of safety complaints and instances directly linked to the 3.3 L Kia V6 Lambda II engine. I appreciate your assistance in resolving this issue with KIA AMERICA and the local KIA service center where my vehicle is located
EXTERIOR LIGHTING (1 complaints)
EXTERIOR LIGHTING
1 complaintThe headlights are auto leveling based on load. Although there is no load in my vehicle the headlights do not shine out very far in front of the vehicle. There is a very distinct cut off line on the road. There is no way of adjusting them. This is very dangerous because you cannot see whats ahead of the vehicle in the dark. The attached photo is the headlights shining on my garage door.
STEERING (1 complaints)
STEERING
1 complaintSteering wheel became stiff and it's not steering. Yes, vehicle is available for inspection. Driving on freeway with my children in the vehicle when wheel became stiff. Was able to get off ramp and get home. Incident happened on 10/02/2022, currently on 2 hour hold with Kia (800-333-4542). Called local dealership, but was sent to voice mail for service department. No, vehicle has not been inspected. There were no warning lamps or messages at time of incident nor prior symptoms. Turned vehicle on this AM (10/03/2022) and no warning lights nor messages have appeared. Checked power steering fluid level and it is at the recommended level.
When Do 2018 Kia Sedona Problems Start?
Based on owner complaint patterns, here's when common issues tend to appear.
Best & Worst Kia Sedona Years
Best Kia Sedona Years to Buy
Based on reliability index scoreKia Sedona Years to Avoid
No Kia Sedona years are statistical outliers in our data.
Scores stay between 78 and 88 across 4 scored model years.
Kia Sedona Reliability Score Trend
Scores 0–100. Higher is better. Current year highlighted.
| Year | Score | Rating |
|---|---|---|
| 2018 | 78/100 | Good |
| 2019 | 80/100 | Excellent |
| 2020 | 83/100 | Excellent |
| 2021 | 88/100 | Excellent |
Kia Sedona Reliability Compared to Other Years
Frequently Asked Questions
Is the 2018 KIA Sedona reliable?
What are the most common problems with the 2018 KIA Sedona?
Does the 2018 KIA Sedona have engine problems?
How many recalls does the 2018 KIA Sedona have?
Is the 2019 KIA Sedona more reliable than the 2018?
Don’t buy a 2018 Kia Sedona without checking its VIN first — hidden accidents, title issues, and open recalls could cost you thousands.
How we score the 2018 Kia Sedona
Of the four inputs behind this score, the 2018 Kia Sedona does best on repair costs (80/100) and worst on recall impact (75/100). Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.
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