The 2.5-liter Hyundai G4KR or Smartstream 2.5 FR T-GDi engine has been produced since 2020 and is installed on rear-wheel drive models of the company like Kia Stinger and Genesis crossovers. This motor differs from analogues in the presence of a combined injection system GDi + MPi.
Theta 2.5L family: G4KM, G4KN, G4KP, G4KR, G4KS.
Specifications
| Production years | since 2020 |
| Displacement, cc | 2497 |
| Fuel system | GDi + MPi |
| Power output, hp | 304 |
| Torque output, Nm | 422 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 88.5 |
| Piston stroke, mm | 101.5 |
| Compression ratio | 10.5 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | yes |
| Recommended engine oil | 0W-30 |
| Engine oil capacity, liter | 6.2 |
| Fuel type | petrol |
| Euro standards | EURO 5/6 |
| Fuel consumption, L/100 km (for Kia Stinger 2021) — city — highway — combined |
10.2 7.4 8.8 |
| Engine lifespan, km | ~200 000 |
The engine was installed on:
- Kia Stinger 1 (CK) since 2020;
- Genesis GV70 1 (JK1) since 2020;
- Genesis GV80 1 (JX1) since 2020;
- Genesis G80 2 (RG3) since 2020.
Disadvantages of the Hyundai G4KR engine
- This power unit has appeared recently and there are no failure statistics for it yet;
- The presence of combined injection here solves the problem of valve coking;
- While the resource of timing chains is unknown, usually they are quickly pulled out at a turbo engine;
- The engine turned out to be very hot and you will need to monitor the cooling system;
- Variable displacement oil pump units do not add reliability.
Frequently asked questions about the Hyundai-Kia G4KR
How much power does the Hyundai-Kia G4KR make?
The Hyundai-Kia G4KR develops 304 hp and 422 Nm of torque.
How much oil does the Hyundai-Kia G4KR take and which one?
Engine oil capacity: 6.2 liters. Recommended oil: 0W-30.
Does the Hyundai-Kia G4KR have a timing belt or chain?
The Hyundai-Kia G4KR uses a timing chain.
Is the Hyundai-Kia G4KR turbocharged?
Yes, the Hyundai-Kia G4KR is turbocharged.
Does the Hyundai-Kia G4KR need valve clearance adjustment?
No, the Hyundai-Kia G4KR has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai-Kia G4KR last?
The typical lifespan of the Hyundai-Kia G4KR is ~200 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G4KR?
Kia Stinger 2021: city 10.2, highway 7.4, combined 8.8 L/100 km.
What cars was the Hyundai-Kia G4KR installed on?
Kia Stinger 1 (CK) since 2020; Genesis GV70 1 (JK1) since 2020; Genesis GV80 1 (JX1) since 2020; Genesis G80 2 (RG3) since 2020.
What are the common problems of the Hyundai-Kia G4KR?
This power unit has appeared recently and there are no failure statistics for it yet. The presence of combined injection here solves the problem of valve coking. All known problems.
