Model year guide

2021 Kia K5

Recalls, most-reported problems, crash-test ratings, fuel economy and what a 2021 Kia K5 is worth — from official NHTSA and EPA data. 6 on record.

2021 Kia K5 — representative photo
Representative photo · via Wikimedia Commons

2021 Kia K5 at a glance

Safety recalls6
Owner complaints149
Combined27–32 mpg
Typical price$28,455

Free: that car's specs and build sheet, model-year recall campaigns and a fair price.

2021 Kia K5 recalls 6

Air Bags: Air Bag/restraint Control Module NHTSA Campaign #21V164000 · 11/03/2021

Kia Motors America (Kia) is recalling certain 2021 Telluride, K5, and Forte vehicles. The Occupant Classification and Detection System (OCS/ODS) unit may not detect the presence of a child restraint system in the front passenger seat. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."

Fix: Kia will notify owners, and dealers will replace the OCS/ODS unit, free of charge. The recall began March 18, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC207.

Fuel System, Gasoline:delivery:hoses, Lines/piping, And Fittings NHTSA Campaign #21V519000 · 08/07/2021

Kia Motor America (Kia) is recalling certain 2021 Sorento and 2021-2022 K5 vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.

Fix: Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed July 21, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC214.

Lane Departure: Lane Keep: Steering Assist NHTSA Campaign #21V447000 · 14/06/2021

Kia Motors America (Kia) is recalling certain 2021-2022 K5 vehicles equipped with 2.5L T-GDI engines. The Rack-Mounted Motor Driven Power Steering (R-MDPS) system lacks the ability to diagnose communication faults. If a communication fault occurs while driving around a curve with Lane Following Assist (LFA) engaged, the steering assist level may not adjust properly, causing a sudden increase in the steering effort…

Fix: Dealers will update the R-MDPS software, free of charge. Owner notification letters are were mailed June 24, 2021. Owner may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC213.

Power Train:automatic Transmission NHTSA Campaign #22V760000 · 11/10/2022

Kia Motors, Inc. (Kia) is recalling certain 2021-2022 Sorento and 2021-2023 K5 vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.

Fix: Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed December 9, 2022. Owners may contact Kia customer service at 1-800-333-4542. Ki…

Air Bags:side/window:curtain NHTSA Campaign #23V149000 · 07/03/2023

Kia America, Inc. (Kia) is recalling certain 2021-2023 K5 vehicles. The side curtain air bags may have been installed incorrectly, causing them not to deploy properly in the event of a crash.

Fix: Dealers will inspect and reinstall the side curtain air bags, as necessary, free of charge. Owner notification letters were mailed April 7, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC263.

Fuel System, Gasoline NHTSA Campaign #25V794000 · 17/11/2025

Kia America, Inc. (Kia) is recalling certain 2021-2024 K5 vehicles. A damaged check valve can allow air to enter the fuel tank, causing it to expand and contact hot exhaust components, melting the tank.

Fix: Dealers will replace the check valve. The fuel tank will be inspected for damage and replaced as necessary. All repairs will be performed free of charge. Owner notification letters were mailed January 16, 2026. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is…

Source: U.S. NHTSA. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.

2021 Kia K5 common problems

Owners have filed 149 complaints with NHTSA. These are the most-reported areas in a sample of the most recent — and what to check before you buy.

Engine
Listen for knocks or ticking, check for leaks and blue/white exhaust smoke, and make sure it doesn't overheat. No check-engine light should be on.
Electrical System
Test every electrical feature: windows, locks, infotainment, charging and all lights. Watch for flickering, dead accessories or warning lights.
Fuel System
Sniff for fuel odor, check for leaks, hard starts or stalling, and confirm the fuel gauge reads correctly.
Gasoline
Have a trusted mechanic inspect this system as part of a pre-purchase inspection.
Fuel/propulsion System
Check for fuel or battery warnings, hard starts and stalling. On a hybrid/EV, confirm charging and range behave normally.
Power Train
Drive through every gear: watch for slipping, hard or delayed shifts, and shudder. Check for transmission/driveline leaks and noises.

2021 Kia K5 MPG & running costs

Combined27–32 mpg
City27 mpg
Highway36 mpg
Est. annual fuel cost$2,250

Source: U.S. EPA / DOE fueleconomy.gov. The EPA lists 3 versions of this model year; combined is shown as a range and the other figures are averages.

What's a 2021 Kia K5 worth?

Low
$24,995
Typical price
$28,455
High
$30,998

From 6 comparable 2021 Kia K5 listings.

Estimated 5-year cost to own

A rough guide to what running a 2021 Kia K5 costs over five years and 75,000 miles.

Fuel (5 yrs)$11,250
Fuel only$11,250
Per mile$0.15

How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.

2021 Kia K5 trims & engines on record

Trims
GT-Line · LX · LXS
Engines
1.6L

2021 Kia K5 vehicles on record

Other Kia K5 model years

2021 Kia K5 — frequently asked questions

Does the 2021 Kia K5 have any safety recalls?

NHTSA lists 6 recall campaigns for the 2021 Kia K5. Whether an individual car still needs a recall repair depends on its VIN — check it on NHTSA.gov or ask a franchised dealer. Recall repairs are free.

What are the most common problems with the 2021 Kia K5?

Owners have filed 149 complaints with NHTSA; in a sample of the most recent, the most-reported problem areas are engine, electrical system, fuel system.

What gas mileage does the 2021 Kia K5 get?

The 2021 Kia K5 has U.S. EPA estimates of 27–32 mpg combined, depending on engine and trim (3 versions).

How much is a 2021 Kia K5 worth?

Comparable 2021 Kia K5 listings run roughly $24,995–$30,998, typically around $28,455 (from 6 vehicles).

Sources: NHTSA (recalls, complaints, crash tests), U.S. EPA (fuel economy). Vehicle data only — CarLogs never shows owner information.