Kia K4
Registered from 2025 to 2027.
About this model
The Kia K4 is a small family car / compact car (C-segment) manufactured by South Korean automaker Kia since 2024. It is a replacement for the Kia Forte/K3/Cerato, while the K3 nameplate was transferred to a subcompact car.
From the Wikipedia article Kia K4, licensed under CC BY-SA 4.0.
Crash test
| Overall | ★★★★★ |
| Frontal crash | ★★★★☆ |
| Side crash | ★★★★★ |
| Rollover | ★★★★★ |
| Stability control | Standard |
| Forward collision warning | Standard |
| Lane departure warning | Standard |
Crash-tested by NHTSA, the American road safety agency.
Specification
| Year | Measured |
|---|---|
| 2027 | 1367 kg · 2720 mm wheelbase · Hatch |
| 2026 | 147 hp · 1367 kg · 2720 mm wheelbase · 7.8 L/100km (EPA) · 8.4 L/100km city · 6.9 motorway · Sedan, 4-door |
| 2025 | 147 hp · 1340 kg · 2720 mm wheelbase · 7.1 L/100km (EPA) · 8.1 L/100km city · 6.0 motorway · Sedan, 4-door |
What the maker told its dealers
Service bulletins are the manufacturer's own repair guidance to dealers, filed with NHTSA. A bulletin is not a defect finding; the count rises with how many things a maker writes down, not only with how many go wrong.
Kia filed 7 bulletins about the 2026 K4.
- Electrical system: 5
- Engine: 2
- TECHNICAL SERVICE BULLETIN: BODY DOMAIN CONTROLLER (BDC) REPLACEMENT (CA2515 Revision 1) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are… · July 2026
- TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable… · June 2026
- TECHNICAL SERVICE BULLETIN: INFOTAINMENT SOFTWARE UPDATE PROCEDURE - This bulletin provides information on the process for downloading infotainment software updates and preparing USB for installation… · May 2026
- TECHNICAL SERVICE BULLETIN: BODY DOMAIN CONTROLLER (BDC) REPLACEMENT (CA2515) - This bulletin provides information regarding the Body Domain Control unit (“BDC”) on certain 2025MY and 2026MY K4 (CL4)… · May 2026
- TECHNICAL SERVICE BULLETIN: DCU COMMUNICATION LOGIC IMPROVEMENT - This bulletin provides the procedure to upgrade the Data Connectivity Unit (DCU) system software on some 2025–2026MY vehicles listed… · March 2026
- TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC26) - This bulletin has been revised to include additional information. New/revised sections of this… · February 2026
- TECHNICAL SERVICE BULLETIN: DATA COLLECTION: EXTRACT CALIFORNIA EMISSIONS DATA FROM ECU (DC26) - This bulletin provides information related to extracting “in use monitoring performance tracking”… · January 2026
Grouped by NHTSA's top-level system; a bulletin filed under a sub-heading counts toward its system.