Last updated: 2026-03-15

2018 KIA Sedona Reliability Report
The 2018 KIA Sedona scores 78/100 ("Good"). With 3 recalls and 44 owner complaints, reliability is acceptable but not class-leading.
Recalls
3
Complaints
44
Complaint Rate
N/A
Est. Annual Cost
$495
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
Acceptable reliability — worth considering with a pre-purchase inspection.
Top Issues to Watch
- ENGINE (16)
- ELECTRICAL SYSTEM (10)
- AIR BAGS (4)
Should You Buy the 2018 KIA Sedona?
The 2018 KIA Sedona scores 78/100 ("Good"), placing it in acceptable but not class-leading territory.
With 44 owner complaints, some reported issues may need attention, but we don't yet see evidence of a single dominant failure mode.
A pre-purchase inspection is recommended for used examples, with particular attention to engine (16). An extended warranty may provide additional peace of mind.
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: Frequent engine failures in the 2018 KIA Sedona, often without warning lights... (16 complaints)
- −ELECTRICAL SYSTEM issues reported (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
The 2018 KIA Sedona has 3 recalls on record. This is a moderate number. Each recall represents a safety or compliance issue identified by the manufacturer or NHTSA. All recall repairs are performed free of charge at authorized dealerships, regardless of warranty status.
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.
2018 KIA Sedona NHTSA Safety Ratings
Overall Safety Rating
Crash Test Results by Configuration (expand)
Gas Powertrain
Rollover risk: 13.0%
Safety Technologies
KIA Sedona Repair 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.
Used Buying Checklist
Key things to inspect or verify before purchasing a 2018 KIA Sedona.
Inspect engine for oil consumption and potential leaks
Check for any airbag warning lights on the dashboard
Test power sliding doors for proper operation
Examine tires for tread separation or unusual wear
Verify that all electrical components, including the infotainment system, are functioning correctly
Inspect the driver side door for any operational issues
Buying a 2018 Sedona? Check Its History First
Every 2018 KIA Sedona has a different past. A VIN check reveals hidden accidents, title problems, odometer rollbacks, and open recalls that reliability scores can't show you.
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2018 KIA Sedona Common Problems by Component
44 owner complaints grouped by vehicle system.
ENGINE
16 complaintsSafety-relatedOwners report frequent engine failures in the 2018 KIA Sedona, often without warning lights or prior indications of a problem. Complaints frequently mention symptoms such as loss of power, excessive oil consumption, and engine seizing, with some cases involving blown head gaskets or cracked engine blocks. These issues typically appear around 90,000 to 108,000 miles. Safety implications are noted, including two reports of engine fires and several instances of power loss while driving at highway speeds, which could lead to dangerous situations. Potential buyers should be aware of the recurring engine problems and the associated repair costs, especially if the vehicle is out of warranty.
ELECTRICAL SYSTEM
10 complaintsSafety-relatedOwners report several electrical issues with the 2018 Kia Sedona, notably problems with the starting system, where the vehicle fails to start intermittently despite dashboard lights activating. Complaints frequently mention the vehicle dying unexpectedly, with one instance leading to a fire in the engine compartment and another involving a sudden loss of power while driving. Additionally, multiple owners describe issues with the power sliding doors, including unexpected opening and closing, and sensor failures that can trap individuals. These electrical problems are reported at varying mileages, with some occurring as early as 9,000 to 14,000 miles. Safety implications include one reported crash with injury due to non-deployment of airbags and a fire incident, highlighting potential risks for prospective buyers.
AIR BAGS
4 complaintsOwners report recurring issues with the airbag system in the 2018 Kia Sedona, primarily involving the airbag warning light illuminating persistently. Complaints frequently mention repeated dealership visits where parts of the airbag system are replaced or software updates are attempted, yet the warning light often reappears shortly after. Issues are noted at various mileage points, including as early as 1,400 miles, and persist over several years. One owner describes a failure of airbags to deploy during a crash, raising potential safety implications. These patterns suggest that prospective buyers should be cautious of unresolved airbag system problems that may require ongoing repairs.
STRUCTURE (2 complaints)
STRUCTURE
2 complaintsOwners report issues with the 2018 KIA Sedona's structure, specifically noting problems with the driver side door and paint. Multiple owners describe the driver side door as being stuck in the closed position, with the electric motor failing to operate. Additionally, complaints frequently mention paint peeling as a common issue. These problems do not include specific mileage ranges or timelines. While the door issue could potentially impact entry and exit, no safety implications such as crashes or loss of control are reported. This information could be useful for potential buyers to consider when evaluating the vehicle's condition.
WHEELS (2 complaints)
WHEELS
2 complaintsOwners of the 2018 KIA Sedona frequently report issues with tire integrity, specifically involving the Kumho Crugen tires. Common symptoms include tread separation and steel belt shifting, which lead to noticeable rattling, shaking, and pulling to one side during highway driving. These issues are reported at relatively low mileages, around 18,870 to 39,444 miles. While no crashes or loss of control are documented, the described symptoms suggest potential safety risks, particularly at high speeds. Prospective buyers should be aware of these tire-related concerns and consider the condition and brand of tires currently on the vehicle.
UNKNOWN OR OTHER (2 complaints)
UNKNOWN OR OTHER
2 complaintsOwners of the 2018 KIA Sedona report issues related to the vehicle's front grill design and fuel efficiency. One complaint describes an incident where an object passed through the grill, damaging the air conditioning condenser, suggesting that the grill's design may not adequately protect internal components. Another owner reports that the vehicle's fuel economy does not meet the advertised range of 18-24 MPG, with their Sedona averaging 17 MPG, even with some highway driving. This complaint is noted at around 2,500 miles on the odometer. No safety implications such as crashes or loss of control are mentioned in these complaints.
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
Comprehensive reliability analysis based on NHTSA data, owner complaints, and historical performance.
Best KIA Sedona Years to Buy
Based on reliability index scoreThe best KIA Sedona year is 2021 with a reliability score of 88/100, rated excellent. Other strong picks include 2020 (83/100) and 2019 (80/100).
KIA Sedona Years to Avoid
No KIA Sedona years are statistical outliers in our data.
All model years score consistently well. The KIA Sedona maintains one of the highest industry standards for long-term durability across its entire production span.
KIA Sedona Reliability Score Trend
KIA Sedona reliability has improved in recent years, with newer models scoring an average of 86/100 compared to 79/100 for older years.
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?
How many recalls does the 2018 KIA Sedona have?
Is the 2018 KIA Sedona expensive to maintain?
Don’t buy a 2018 KIA Sedona without checking its VIN first — hidden accidents, title issues, and open recalls could cost you thousands.
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How We Calculate Reliability Scores
Auto Reliability Index scores are calculated on a 0–100 scale using a weighted formula that combines multiple public data sources. Each factor is weighted based on its predictive value for real-world ownership experience.
Key Ranking Factors
Complaint Severity
NHTSA owner complaints weighted by component category (e.g., powertrain, safety systems, electronics, cosmetic) — safety-critical issues carry more weight than cosmetic ones. Adjusted for sales volume so high-volume models aren't unfairly penalized.
Repair Costs
Independent reliability ratings based on repair frequency, average repair costs, and severity of typical repairs for each model.
Recall Impact
Number of NHTSA recalls weighted by severity. “Stop driving” and fire-risk recalls are penalized more heavily than minor software or labeling recalls.
Issue Diversity
Measures how many major vehicle systems (engine, transmission, electrical, braking, etc.) have recorded complaints. A vehicle with issues spread across many systems may indicate systemic quality issues.
Scores are grouped into four tiers:
- 80–100: Excellent — Top-tier reliability, minimal issues
- 60–79: Good — Reliable with some minor concerns
- 40–59: Mixed — Notable issues, research before buying
- 0–39: Risky — Significant problems, proceed with caution
Data is sourced from NHTSA recall records, owner complaint filings, and independent repair databases. Scores are recalculated as new data becomes available. While the weighting model is proprietary, all underlying data sources are public and traceable.
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