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Kia K4Model year report

2026 Kia K4 Problems

Compared with other Kia K4 years

Too new to compare

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
13filed with NHTSA
Median mileage
12,908miles, 2 complaints with mileage
Recalls
1campaigns on record
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA crash rating
5 / 5stars overall, 2 rated versions
EPA fuel economy
30 mpgcombined, 2.0L 4-cyl FWD · 28 city / 34 hwy

Sources: NHTSA records for the 2026 Kia K4 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 13 consumer complaints for the 2026 Kia K4. The part named most often is other or unknown, with 5 complaints (38% of the total), followed by steering (5) and lane departure (4). 2 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 12,908 miles. Of all complaints, 6 involved a crash, 1 an injury, according to the filers. NHTSA lists 1 recall campaign and 7 technical service bulletins for this model year.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Other or unknown: “The vehicle has repeatedly jerked into other lanes while I am driving, requiring me to quickly jerk the steering wheel back to avoid a collision. This occurs whether the lane-keeping assistance feature is turned on or off. I turned the feature off, but the problem continued. The vehicle does not feel safe to drive and appears likely to cause an accident, especially when there is oncoming traffic.”

NHTSA complaint #11765205, filed 2026-09

Steering: “Sometimes when I’m driving the steering wheel just jerks to the left sometimes causing me to swerve into incoming traffic. It’s very scary. Luckily I’m holding tight to the steering wheel to keep myself from hitting someone.”

NHTSA complaint #11733624, filed 2026-04

Lane departure: “The vehicle issues began 3 weeks after purchasing a 2026 Kia K4 with 89 miles on it. * Key fob not recognized , black screen, car not starting and cascading into many other infotainment problems. ** Revving far higher (1.4 - 4.4) with the slightest acceleration ***Hesitating, them engaging so suddenly that steering is incredibly difficult. On more than one occasion, of someone had been in front of me, I would have hit them. ****All steering assist options OFF yet the car will take control and turn me towards oncoming traffic. I absolutely could have been in/caused a serious accident. …”

NHTSA complaint #11755719, filed 2026-08

Electrical system: “The contact owns a 2026 Kia K4. While driving 37 MPH, the vehicle lost motive power. After restarting the vehicle, the failure persisted, and the message Press Engine Start/Stop was displayed with the key warning light illuminated. The following night, the contact started and then turned off the vehicle; however, the vehicle restarted independently without the Engine Start/Stop button being pressed. The vehicle was towed to the dealer but was not yet diagnosed. The manufacturer was notified by phone, and a case was filed. The failure mileage was 25,352.”

NHTSA complaint #11769857, filed 2026-10, 25,352 miles

Mileage when problems were reported

100% of the 2 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 465 and 25,352 miles.

50%0–100%10–2550%25–500%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (2 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 12,908 miles.

Complaints by year filed

This model year is less than 4 years old, so a trend is not meaningful yet.

202613
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2026 Kia K4. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
K4 · sedan FWD★★★★★5 / 4555 · 9.9% risk
K4 5DR · hatchback FWD★★★★★5 / 4555 · 9.9% risk

Driver aids listed by NHTSA for the 2026 model year: forward collision warning standard, lane departure warning standard, automatic emergency braking standard on some versions.

Neighbouring years: 2025: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2026 Kia K4 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
K4 FWD1.6L 4-cyl8-speed automatic263328$2,400
K4 4DR w/ DMS FWD2.0L 4-cylCVT293933$2,050
K4 Hatchback FWD1.6L 4-cyl8-speed automatic263328$2,400
K4 Hatchback FWD2.0L 4-cylCVT283430$2,250
K4 without DMS FWD2.0L 4-cylCVT293933$2,050

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2026 Kia K4 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 7 on record; the latest 7 are shown.

Other model years of the Kia K4

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20261312,9081530—Too new
2025471,3002533Too new to compareToo new

All Kia K4 model years

Frequently asked questions

How many NHTSA complaints does the 2026 Kia K4 have?

NHTSA recorded 13 consumer complaints for the 2026 Kia K4 as of Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2026 Kia K4 is reported most often?

Other or unknown is named most often, in 5 complaints (38% of the total), followed by steering with 5.

Has the 2026 Kia K4 been recalled?

NHTSA lists 1 recall campaign for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2026 Kia K4 do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2026 Kia K4 5 out of 5 stars overall, across 2 rated versions (body style and drive). Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2026 Kia K4 get?

The EPA rates the 2026 Kia K4 (K4 Hatchback, 2.0L 4-cyl) at 30 mpg combined, 28 city and 34 highway, with an estimated annual fuel cost of $2,250 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2026 Kia K4 reported?

Among the 2 complaints that include a mileage, the median is 12,908 miles and the middle half falls between 465 and 25,352 miles; 100% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.