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.
Frequently asked questions about the Hyundai-Kia G6DT
How much power does the Hyundai-Kia G6DT make?
The Hyundai-Kia G6DT develops 300 hp and 359 Nm of torque.
How much oil does the Hyundai-Kia G6DT take and which one?
Engine oil capacity: 6.1 liters. Recommended oil: 0W-20.
Does the Hyundai-Kia G6DT have a timing belt or chain?
The Hyundai-Kia G6DT uses a timing chain.
Is the Hyundai-Kia G6DT turbocharged?
No, the Hyundai-Kia G6DT is naturally aspirated.
Does the Hyundai-Kia G6DT need valve clearance adjustment?
No, the Hyundai-Kia G6DT has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai-Kia G6DT last?
The typical lifespan of the Hyundai-Kia G6DT is ~300 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G6DT?
Kia K8 2022: city 11.1, highway 7.5, combined 8.7 L/100 km.
What cars was the Hyundai-Kia G6DT installed on?
Kia K8 1 (GL3) since 2021.
What are the common problems of the Hyundai-Kia G6DT?
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. All known problems.
