What are the most common problems with the 2018 Kia Sedona?

Verify completion of all 8 recalls, with particular attention to the critical Air Bag Control Unit (ACU) software update or replacement.

How many recalls does the 2018 Kia Sedona have?

The 2018 Kia Sedona currently has 8 recalls on file. Review the full recall report to see affected components and available remedies.

Is the 2018 Kia Sedona a good buy used?

Verdict: Proceed with caution. Verify completion of all 8 recalls, with particular attention to the critical Air Bag Control Unit (ACU) software update or replacement. Inspect the power sliding door system for proper auto-reverse function, as this has been subject to recall. Confirm the wiring harness for the passenger seat Occupant Detection System (ODS) has been addressed via recall. While consumer complaints are zero, the number of recalls suggests potential for early-lifecycle defects. The 3.3L V6 engine and 6-speed automatic are generally dependable, but recall work is paramount. Always verify service history, open recalls, and maintenance records before purchasing.

What maintenance costs should I expect for the 2018 Kia Sedona?

Refer to the maintenance cost guide for interval schedules, DIY difficulty ratings, and typical repair cost ranges for the 2018 Kia Sedona.

2018 Kia Sedona Report

Known issues, recalls, running costs, and what to check before you buy.

Updated Jun 10, 2026Ethan Miller5 Critical Recalls

Overall Score

Our Verdict

Proceed with caution

Key Takeaways

Verify completion of all 8 recalls, with particular attention to the critical Air Bag Control Unit (ACU) software update or replacement.
Inspect the power sliding door system for proper auto-reverse function, as this has been subject to recall.
Confirm the wiring harness for the passenger seat Occupant Detection System (ODS) has been addressed via recall.
While consumer complaints are zero, the number of recalls suggests potential for early-lifecycle defects.

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Overview

2018 Kia Sedona

The 2018 Kia Sedona minivan presents a compelling option for families seeking space and utility. It boasts excellent NHTSA safety ratings, including 5 stars for overall, frontal, and side crash tests. Under the hood, a 3.3-liter V6 engine paired with a 6-speed automatic transmission provides adequate power for daily driving and hauling. While consumer complaints are notably absent, the vehicle has a significant number of recalls, particularly related to the airbag system. These recalls, while addressed by the manufacturer, warrant careful inspection and verification of completion before purchase. The Sedona's reliability is rated as average, a verdict influenced by these recall concerns.

Critical Failure Risk

A critical recall addresses potential deactivation of airbags due to issues with the Air Bag Control Unit (ACU). This can occur due to software glitches or hardware compromise. While recalls involve software updates or replacement, persistent defects are a risk.

Early detection can help you avoid a $500-$1,500 repair.

Open Maintenance Analysis →

Safety & Bulletins

Open Recalls8

Service Bulletins0

Full Recall History →

Owner Complaints

No primary complaint themes found.

Detailed Issue Breakdown →

Performance & Efficiency

Fuel Efficiency

Combined

MPG

City

MPG

Highway

MPG

Full Vehicle Specifications ↓

Reliability

Practicality

The score is mainly limited by high fuel consumption.

Buyer Fit

Who This Car Is For

Best for

Families needing flexible seating and cargo space.

+3 more buyer-fit notes in the full report

Avoid if

Drivers who prioritize a completely unblemished recall history.

+2 more buyer-fit warnings in the full report

2018 Kia Sedona Reliability Analysis

Specs

Vehicle Specs

Fuel Type: Regular
Seating Capacity: 7
Transmission: Automatic
Drivetrain: FWD/Front-Wheel Drive
EPA Combined MPG: 20

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Most Common Issues

1. Air Bag Control Unit (ACU) Malfunction

Most reported

Usage data observed

2. Power Sliding Door (PSD) Obstruction Failure

Usage data observed

See all common issues in the maintenance guide

First Service Interval

- Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Inspect Brake System

Est. shop cost: $100 - $180

7,500 mi

Unlock the full maintenance guide for every scheduled service interval and cost forecast.

Full pre-purchase inspection checklist

Complete maintenance schedule (5 service intervals)

Repair forecasts with mileage and cost context

Full buyer-fit guidance and who should avoid it

Full specs and trim-level context

8 recall campaign details & remedy notes

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FAQ

Is the 2018 Kia Sedona reliable?

The CarFocal Reliability Score for the 2018 Kia Sedona is 8.1/10. Reliability score is 8.1/10. NHTSA recalls: 8. Owner complaints: 0.

How practical is the 2018 Kia Sedona for daily use?

Practicality score is 5.1/10. The score is mainly limited by high fuel consumption. EPA combined economy is 20 MPG. Seating capacity is 7. 4 passenger doors are listed.

What is the overall score for the 2018 Kia Sedona?

The CarFocal Overall Score for the 2018 Kia Sedona is 7.0/10. Overall score is 7.0/10 (Good). Confidence 85%. Maintenance 8.3/10. Practicality 5.1/10.

What does it cost to own and maintain a 2018 Kia Sedona?

Based on Carfocal's data, First listed service: - Oil Change (5W-30 Synthetic) (Parts: 5W-30 Synthetic Oil, Oil Filter) - Tire Rotation and Inspection - Inspect Brake System at 7,500 miles. Estimated first-year maintenance: $500 - $900. Repair prediction highlight: Air Bag Control Unit (ACU) (typical at 50,000 miles, estimated cost Min: $500 • Max: $1,500).

What is the MSRP range for the 2018 Kia Sedona?

Base MSRP is $27,000.

What engine is in the 2018 Kia Sedona?

Engine specs list 6 • 3.3.

What transmission does the 2018 Kia Sedona use?

According to CarFocal's specs for the 2018 Kia Sedona, transmission is Automatic. The paired drivetrain is FWD/Front-Wheel Drive.

What is the combined EPA MPG for the 2018 Kia Sedona?

EPA combined estimate is 20 MPG.

What driver assistance and safety features are available on the 2018 Kia Sedona?

8 standard and 5 optional driver assistance features. Key features include Anti-lock Braking System, Electronic Stability Control, Traction Control.

How many people fit in a 2018 Kia Sedona?

According to CarFocal's specs for the 2018 Kia Sedona, seating capacity is 7.

What drivetrain does the 2018 Kia Sedona use?

According to CarFocal's specs for the 2018 Kia Sedona, drivetrain is FWD/Front-Wheel Drive. Transmission is Automatic.

What are the NHTSA safety ratings for the 2018 Kia Sedona?

NHTSA ratings: Overall 5/5 • Frontal 5/5 • Side 5/5 • Rollover 4/5.

Are there open safety recalls on the 2018 Kia Sedona?

This model year has 8 official safety campaigns listed.