Owner complaints, recalls, fuel economy and safety ratings from public NHTSA and EPA data, updated Oct 17, 2026.
Fuel economy
22 mpgcombined; city 19, highway 26; every version of this model year
Five years of fuel
$14,760U.S. average; Ohio $13,190 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 overall safety rating
Not ratedNHTSA has no overall rating for this year
NHTSA's VIN data lists these trims for the 2023 Carnival. 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 51 complaints with NHTSA about the 2023 Carnival. 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
Unknown or other
22
0
0
3
Structure
12
0
0
5
Electrical system
6
0
0
1
Engine
5
0
0
0
Fuel/propulsion system
3
0
0
0
Chest clip, buckle, harness
2
0
0
0
Fuel system, gasoline
2
0
0
0
Lane departure
2
0
0
0
Latches/locks/linkages
2
0
0
0
Seat belts
2
0
0
0
Steering
2
0
0
0
Engine and engine cooling
1
0
0
0
5 more parts
Forward collision avoidance
1
0
0
0
Power train
1
0
0
0
Service brakes
1
1
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 4 recall campaigns for the 2023 Carnival 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 America, Inc. (Kia) is recalling certain 2022-2026 Carnival vehicles. Fuel may leak at the pipe connection between the fuel pipe and fuel rail.
Risk: A fuel leak increases the risk of a fire.
Remedy: Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed June 2, 2026. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC368. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov on April 24, 2026.
Kia America, Inc. (Kia) is recalling certain 2023-2024 Sportage and 2022-2024 Carnival vehicles. The roof molding may loosen and detach.
Risk: A detached roof molding can create a road hazard for other vehicles, increasing the risk of a crash.
Remedy: Dealers will inspect the roof molding and replace or secure it as necessary, free of charge. Owner notification letters were mailed March 15, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC292.
Kia America, Inc. (Kia) is recalling all 2022 and certain 2023 Carnival vehicles. The auto-reverse feature for the power sliding doors (PSD) may not activate in all situations.
Risk: A power sliding door that does not auto-reverse can close on an occupant, increasing the risk of injury.
Remedy: Dealers will update the power sliding door control module software, free of charge. Owner notification letters were mailed April 28, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC266.
Kia America, Inc. (Kia) is recalling certain 2022-2023 Carnival vehicles equipped with a tow hitch harness installed as original equipment, or purchased as an accessory through a Kia dealership. Water accumulation on the tow hitch harness module printed circuit board (PCB) may cause an electrical short, which can result in a fire.
Risk: A fire while parked or driving can increase the risk of injury.
Remedy: Owners are advised to park their vehicles outside and away from structures until the remedy is completed. Dealers will inspect and verify whether the vehicle is equipped with a Genuine Kia accessory trailer tow hitch assembly. If equipped, dealers will install a new fuse and wire extension kit. Repairs will be performed free of charge. Owner notification letters were mailed May 16, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC265.
Carmakers sent NHTSA 69 service bulletins and notices that cover the 2023 Carnival, the latest on Aug 25, 2026. They tell dealers how to fix known issues.
The parts they mention most: electrical system (39), seats (21), structure (18), engine and engine cooling (4), equipment (3).
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 2023 Carnival.
EPA class: minivan. EPA greenhouse gas score: 5 out of 10. Each version EPA tested:
Swipe the table sideways for more columns.
Version
Engine
Transmission
Fuel
City / hwy / comb
Carnival Front-Wheel Drive
3.5 L, 6 cyl
Automatic (S8)
Regular Gasoline
19 / 26 / 22
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