Kia K5— Transmission Guide

Complete transmission type, fluid specification, and service interval data for every Kia K5 generation.

2021–present

K5 base — 2.5L NA (LX/LXS/EX)

Transmission

8-Speed Automatic

Code: 8AT

Fluid Specification

ATF (check OEM spec)

Service Interval

Every 30,000 miles

Engine

Smartstream G2.5 GDI+MPI (G4KN) — 2.5L — Direct Injection

Drivetrain Options

FWD, AWD

2021–present

K5 GT-Line — 1.6T

Transmission

8-Speed Wet Dual-Clutch (DCT)

Code: 8DCT_wet

Fluid Specification

Dual-clutch fluid (wet clutch — OEM specific)

Service Interval

Every 40,000 miles

Engine

Smartstream G1.6 T-GDI (G4FP, CVVD) — 1.6L (Turbo) — Direct Injection

Drivetrain Options

FWD, AWD

Note: 8-speed wet dual-clutch. Requires wet DCT fluid service. Different from Forte GT's 7DCT dry.

2021–present

K5 GT — 2.5T

Transmission

8-Speed Wet Dual-Clutch (DCT)

Code: 8DCT_wet

Fluid Specification

Dual-clutch fluid (wet clutch — OEM specific)

Service Interval

Every 40,000 miles

Engine

Smartstream G2.5 T-GDI (G4KP) — 2.5L (Turbo) — Direct Injection

Drivetrain Options

FWD

Note: 8-speed wet dual-clutch. Performance application — wet DCT fluid service critical.

Frequently Asked Questions

What transmission does a Kia K5 have?

The Kia K5 uses a 8-Speed Wet Dual-Clutch (DCT) (8DCT_wet). Depending on the model year and trim level, the exact transmission may vary — see the year-by-year breakdown above for full details.

What fluid does a Kia K5 transmission take?

The recommended transmission fluid is Dual-clutch fluid (wet clutch — OEM specific). Always verify with your owner's manual or dealership, as the correct fluid can vary by production year and transmission variant.

How often should I service the Kia K5 transmission?

The recommended service interval is every 40,000 miles. Severe driving conditions (towing, frequent stop-and-go, extreme temperatures) may require more frequent service. Regular transmission maintenance is one of the best ways to prevent costly repairs.

Use our transmission lookup tool to search by year, make, and model for any vehicle.

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