The 2024 Kia K5 features 4-cylinder engines—the 1.6L turbo or 2.5L turbo depending on trim. Both are inline-4 configurations with only cylinders 1 through 4. When P0306: Cylinder 6 Misfire Detected appears, you're encountering an anomalous code.
K5 Powertrain Options
The K5 (replacing the Optima) offers only 4-cylinder engines. No V6 option exists. The 2.5L turbo GT produces 290 hp from four cylinders. P0306 cannot indicate an actual misfire.
Why This Erroneous Code Appears
Scanner databases from older V6 Optimas may cause confusion. Generic scanners misinterpret K5 protocols. Aftermarket devices create conflicts. ECU errors generate false codes.
Proper Diagnostic Approach
Clear all codes and drive through conditions. Use Kia GDS or professional equipment for accurate readings. Focus on legitimate misfire codes (P0301-P0304).
Stylish Performance
The K5's bold styling pairs with efficient turbocharged power. Use valid codes for concerns.