The Kia K4 is a midsize car built from 2025 to 2026. Most were assembled in Mexico — 100% of those on record. Engines offered: 4-cyl. Worth buying? It holds up well, with the usual caveat about model years at 4.0/5 — and the year you pick matters far more than the badge (best and worst years →).
What the K4 is
The Kia K4 is a midsize car that Kia built from 2025 to 2026 — 2 model years. It has been offered with 4-cyl power. Its closest siblings in the Kia range: Stinger, Forte, Optima.
Where the K4 is built
A badge says where the company is registered; the VIN says where the car was bolted together. We counted the first three characters — the manufacturer identifier — across 51 K4s on record.
| Assembled in | Share | VIN starts with | Years seen |
|---|---|---|---|
| Mexico | 3KP | 2025-2026 |
Check your own: the first three characters of a Kia VIN decide which of these 1 lines your K4 belongs to. What every character in a K4 VIN means →
Got the full 17 characters? A free VIN check on a Kia K4 adds what the decoder can't see: open recalls, theft and total-loss records, and the safety ratings for that exact build.
Kia K4 tire size, oil type & owner specs
The fitment K4 owners look up most — tires, wheels, oil and batteries. Exact wheel and tire sizes decode from your VIN or the driver's door-jamb placard; the universal items are listed below.
Exact tire, wheel, oil grade, capacity and battery group are added per trim and model year — decode your VIN above for the factory fitment. Universal items shown as-is.
What engines does the Kia K4 have? Power & range
The Kia K4 is offered with 1 powertrain — 2L 4-cyl. Here's the lineup by engine, transmission and drivetrain — 1 for the Kia K4, against one or two on most rivals.
| Engine | Displacement | Transmission | Drive | Fuel |
|---|---|---|---|---|
| 4-cyl | 2.0L · 4-cyl | CVT | FWD | Regular |
Horsepower, torque and fuel-tank size decode from your VIN — exact figures vary by engine and trim.
Source: EPA fueleconomy.gov (engines, drivetrain, range, charge time). Horsepower & torque from NHTSA vPIC on VIN decode.
The K4 by the numbers
What the federal and market records say about the Kia K4. Each line opens the full breakdown by year.
| Topic | K4 | Detail |
|---|---|---|
| Recalls | 4 campaigns | NHTSA, all years |
| Owner complaints | 51 filed | What breaks and when |
| Reliability | 4.0 / 5 | Best and worst years |
| Crash safety | ★★★★★ NHTSA | Frontal, side, rollover |
| Used value | 87 listings | What it sells for now |
Frequently asked questions
What kind of car is the Kia K4?
The K4 is a midsize car, built from 2025 to 2026. Engines offered: 4-cyl.
Where is the Kia K4 made?
Across 51 cars in our records the split is: Mexico (100%). The first three characters of a VIN identify the plant's manufacturer and country — that is where these shares come from, not from a press release.
What is the Kia K4 warranty?
New models carry 5 years / 60,000 miles basic cover and 10 years / 100,000 miles on the powertrain. Worth knowing: across our complaint records the typical car reaches the halfway point of its faults at five years, so most repairs land after the basic warranty ends.
Is the K4 reliable?
It scores 4.0/5 in our data. The honest answer depends on the year far more than the model — see the best and worst years, and when this car starts to break.
How do I check a specific K4?
This page describes the model; it cannot tell you whether that car has an open recall or a branded title. Run its VIN against the records — free, and matched to the exact production run.
More in Kia
| Model | Years | Recalls | Best MPG | ForCar score |
|---|---|---|---|---|
| Kia Telluride | 2020–2026 | 33 | 35 mpg | 4.5/5 |
| Kia K5 | 2021–2026 | 16 | 32 mpg | 4.0/5 |
| Kia Sorento | 2001–2026 | 88 | 37 mpg | 4.5/5 |
| Kia Soul | 2010–2026 | 39 | 114 mpg | 4.5/5 |
| Kia Carnival | 2022–2026 | 6 | 33 mpg | 4.5/5 |
| Kia Sportage | 1995–2026 | 101 | 43 mpg | 4.5/5 |