The most-reported K4 run is 3KPFT4DE1SE (2025 builds) with 7 complaints, 3.9× the typical run. Electrical system problems make up 18% of reports; NHTSA lists 3 recall campaigns for K4 model years 2025–2026.
Which build runs owners report most
A production run is the first 11 characters of the VIN: plant, model year, body and engine. The Kia K4 has 30 of them on record. The five runs at the top of this table hold 35% of every K4 complaint on file.
| Production run (VIN 1–11) | Year | Complaints | Involved a crash | Fire |
|---|---|---|---|---|
| 3KPFT4DE1SE•••••• | 2025 | — | — | |
| 3KPFT4DE0SE•••••• | 2025 | 2 | — | |
| 3KPFW4DE6SE•••••• | 2025 | — | — | |
| 3KPFW4DE2SE•••••• | 2025 | — | — | |
| 3KPFW4DE0SE•••••• | 2025 | — | — | |
| 3KPFT4DE7SE•••••• | 2025 | — | — | |
| 3KPFT4DE5SE•••••• | 2025 | 2 | — | |
| 3KPFU4DE5SE•••••• | 2025 | — | — | |
| 3KPFT4DE8SE•••••• | 2025 | 1 | — | |
| 3KPFU4DE7SE•••••• | 2025 | 1 | — | |
| 3KPFU4DE1SE•••••• | 2025 | — | — | |
| 3KPFT4DE6SE•••••• | 2025 | 1 | — |
Each of the other 18 K4 runs has 2 complaints or fewer. ForCar has checked 58 K4 VINs so far, most often 2025, 2026 builds; 9 of them belong to one of the 12 runs above.
Which model years to check twice
Complaints per production run, so a year that simply sold more does not top the list.
| Year | Per run | Complaints | Runs | Crashes |
|---|---|---|---|---|
| 2026 | 7 | 7 | 3 | |
| 2025 | 47 | 23 | 9 |
Heaviest year here is 2025 at 2 complaints per run; lightest is 2026 at 1. The 2026 line is still collecting reports, so it reads low.
What to inspect on this car
One system accounts for 18% of everything Kia K4 owners report: Electrical System, 14 of 54 complaints. Start the pre-purchase inspection there.
| System | Complaints | Involved a crash | Fire |
|---|---|---|---|
| Electrical System | 1 | — | |
| Unknown Or Other | 1 | — | |
| Lane Departure | 4 | — | |
| Forward Collision Avoidance | 5 | — | |
| Power Train | — | — | |
| Steering | 1 | — | |
| Engine | — | — | |
| Air Bags | 4 | — |
Recalls to check against your VIN
NHTSA has 3 recall campaigns on the Kia K4; the 3 below cover build years 2025 to 2026. These are for the model and year; whether one is still open on a given car, only that VIN can tell.
| Campaign | Component | Model years |
|---|---|---|
| 26V135000 | Seat Belts:rear/other:anchorage | 2026 |
| 25V548000 | Engine And Engine Cooling:critical Fasteners | 2025 |
| 26V046000 | Electrical System: Instrument Cluster/panel | 2025 |
The K4 against its rivals
The K4 draws 1.8 complaints per production run; the Tesla Model 3 18.3, the Infiniti Q50 2.6 and the Cadillac CT5 1.2.
| Model | Complaints | Runs | Per run | Involved a crash |
|---|---|---|---|---|
| Kia K4 | 54 | 30 | 22.2% | |
| Tesla Model 3 | 4,173 | 228 | 9.8% | |
| Infiniti Q50 | 466 | 180 | 7.5% | |
| Cadillac CT5 | 106 | 88 | 10.4% |
How serious were they
Of the 54 reports on the Kia K4, 22.2% involved a crash against 5.8% across all vehicles, above the norm.
| Outcome | Kia K4 | All vehicles |
|---|---|---|
| Complaints filed | 54 | 1,115,966 |
| Involved a crash | 12 (22.2%) | 64,194 (5.8%) |
| Involved a fire | 0 (0%) | 26,974 (2.4%) |
| Injuries reported | 9 | 58,013 |
| Deaths reported | 0 | 2,728 |
Crash-related reports run 283% above the all-vehicle rate.
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How this check works
The file behind this page holds 1,115,966 complaints filed with NHTSA between 1981 and 2026, across 298,921 production runs. The Kia K4 share of that is 54 complaints over 30 runs, 0% of everything on record.
Frequently asked questions
How do I check a Kia K4 VIN for free?
Enter the 17 characters above. ForCar matches the first eleven, the production run, against 54 NHTSA complaints from 30 K4 runs and 3 recall campaigns. No account, no card.
Which K4 production run has the most complaints?
3KPFT4DE1SE, a 2025 build, with 7 complaints. The typical K4 run has 1.8.
Which K4 years have the most complaints?
Per production run, 2025 is heaviest at 2 complaints per run and 2026 lightest at 1.
Does the K4 get more complaints than the Tesla Model 3?
No: 1.8 complaints per production run for the K4 against 18.3 for the Tesla Model 3.
How many K4 complaints involve a crash?
22.2% of 54 reports, against 5.8% across all vehicles; 0 involved a fire.
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