Engine Hyundai-Kia G6DT

The 3.5-liter Hyundai-Kia G6DT or Smartstream G 3.5 GDi engine has been produced since 2021 and is currently installed only on the top versions of the popular Kia K8 sedan in the Korean market. The motor is distinguished by the presence of combined injection, that is, both direct and distributed.

Lambda 3.5L family: G6DC, G6DS, G6DU, G6DT, G6DV.


Production years since 2021
Displacement, cc 3470
Fuel system GDi + MPi
Power output, hp 300
Torque output, Nm 359
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 92
Piston stroke, mm 87
Compression ratio 12.3
Features VIS
Hydraulic lifters yes
Timing drive chain
Phase regulator Dual CVVT
Turbocharging no
Recommended engine oil 0W-20
Engine oil capacity, liter 6.1
Fuel type petrol
Euro standards EURO 6
Fuel consumption, L/100 km (for Kia K8 2022)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 205

The engine was installed on:

  • Kia K8 1 (GL3) since 2021.

Disadvantages of the Hyundai G6DT engine

  • On specialized forums, the engine is praised for decent traction and moderate fuel consumption.
  • Like all aluminum V6, this engine is afraid of overheating, keep an eye on cooling.
  • Complaints about the oil burner have not yet been found, but in general the engines of this family are prone to it.
  • There are hydraulic lifters in the cylinder head and valve clearance adjustment is not required.

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