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.
Specifications
| 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 |
11.1 7.5 8.7 |
| 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.
