Showing the 2018 Sedona SX. EPA's version Sedona SX, and NHTSA's VIN data, show it with a 3.3 L engine, but that may not be every version of it, so the numbers below cover every version of this model year. Every version
Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
19–21 mpgcombined; city 17–18, highway 22–25; every version of this model year
Five years of fuel
$15,470–$17,100U.S. average; Ohio $13,820–$15,280 at local prices; every version of this model year; fuel only, not other costs of owning it; 15,000 miles a year, at EIA fuel prices for the week of Oct 12, 2026
NHTSA's VIN data lists these trims for the 2018 Sedona. A trim's engine and numbers are shown as its own only where EPA names versions after the trim and no other version could be it; "seen with" means a source shows that engine on the trim, not that it was the only one. Recalls and complaints cover the whole model year: whether a recall applies to a car depends on its VIN, on NHTSA's recall lookup.
Owners have filed 48 complaints with NHTSA about the 2018 Sedona. These are unverified owner reports, counted by the part of the car they name; one complaint can name several parts. Counts aren't adjusted for how many were sold, so they don't show how reliable a car is.
Complaints by part of the car
Part
Complaints
Crashes
Fires
Injuries
Engine
21
0
4
0
Electrical system
11
1
1
1
Air bags
6
1
0
1
Structure
3
1
0
1
Unknown or other
3
0
0
0
Exterior lighting
2
0
0
0
Fuel/propulsion system
2
0
0
0
Power train
2
0
1
0
Seats
2
0
0
0
Wheels
2
0
0
0
Forward collision avoidance
1
0
1
0
Latches/locks/linkages
1
0
0
0
8 more parts
Seat belts
1
0
0
0
Service brakes
1
0
0
0
Service brakes, hydraulic
1
0
0
0
Steering
1
0
0
0
Suspension
1
0
1
0
Tires
1
0
0
0
Vehicle speed control
1
0
0
0
Visibility/wiper
1
0
0
0
Complaints by model year
Newer years have had less time to collect complaints, and counts aren't adjusted for sales, so a shorter bar doesn't mean a more reliable year.
NHTSA lists 3 recall campaigns for the 2018 Sedona over its history. Campaigns are matched by model and year, so each one may apply to a given car, and its repair may already be done: check a VIN on NHTSA's recall lookup for the open recalls on that exact car.
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.
Risk: 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.
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.
Risk: 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.
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.
Risk: 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.
Carmakers sent NHTSA 55 service bulletins and notices that cover the 2018 Sedona, the latest on Jun 8, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (19), engine and engine cooling (12), equipment (9), air bags (6), seat belts (6).
NHTSA hasn't opened a defect investigation that covers this model year.
Maintenance
Oil
The owner's manual gives the oil and how often to change it. We show oil facts only once we've checked them against the manual, and we haven't yet for the 2018 Sedona.
These are searches on those sites; we don't copy or check their listings. Your ZIP is used for these links and never kept.
Specs
EPA class: minivan. EPA greenhouse gas score: 3–4 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Sedona Front-Wheel Drive
3.3 L, 6 cyl
Automatic (S6)
Regular Gasoline
18 / 24 / 20
Sedona SX Front-Wheel Drive
3.3 L, 6 cyl
Automatic (S6)
Regular Gasoline
18 / 25 / 21
Sedona SXL Front-Wheel Drive
3.3 L, 6 cyl
Automatic (S6)
Regular Gasoline
17 / 22 / 19
Sources and dates
U.S. EPA fuel economy data, file of Sep 29, 2026
NHTSA owner complaints, file of Oct 17, 2026
NHTSA recalls, file of Oct 17, 2026
NHTSA manufacturer communications, file of Oct 17, 2026
NHTSA defect investigations, file of Oct 17, 2026
NHTSA 5-Star Safety Ratings, file of Aug 7, 2026
U.S. Energy Information Administration, file of Oct 12, 2026
Fuel cost: EPA mpg with fuel prices for the week of Oct 12, 2026 and electricity prices for Jul 2026. Source: U.S. Energy Information Administration (Oct 2026). Complaints are unverified reports owners filed with NHTSA. About the data