Produced since 2021, the 3.5-liter Hyundai-Kia G6DT, also known as the Smartstream G 3.5 GDi engine, is currently limited to the top models of the well-liked Kia K8 sedan in the Korean market. Combined injection, or both direct and distributed injection, sets the motor apart.
Lambda 3.5L family: G6DC, G6DS, G6DU, G6DT, and 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
The engine is commended on specialized forums for its moderate fuel consumption and respectable traction.
This engine, like all aluminum V6 engines, fears overheating, so pay attention to cooling.
Although there haven’t been any complaints about the oil burner yet, this family of engines is generally prone to it.
The cylinder head has hydraulic lifters, so valve clearance adjustment is not necessary.