The 2.5-liter Hyundai G4KN SmartStream 2.5 GDI engine has been assembled by the concern since 2019 and is installed on the Kia K5 and on the Hyundai Sonata and Grandeur models. This engine is equipped with two rows of nozzles for direct and distributed fuel injection.
Theta 2.5L family: G4KM, G4KN, G4KP, G4KR, G4KS.
Specifications
| Production years | since 2019 |
| Displacement, cc | 2497 |
| Fuel system | GDi + MPI |
| Power output, hp | 194 |
| Torque output, Nm | 246 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 88.5 |
| Piston stroke, mm | 101.5 |
| Compression ratio | 13.0 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | on all shafts |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.0 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Kia K5 2020) — city — highway — combined |
10.4 5.2 7.1 |
| Engine lifespan, km | ~250 000 |
The engine was installed on:
- Hyundai Grandeur 6 (IG) since 2019;
- Hyundai Sonata 8 (DN8) since 2019;
- Kia K5 3 (DL3) since 2019;
- Kia Sportage 5 (NQ5) since 2021.
Disadvantages of the Hyundai G4KN engine
- This motor began to be installed only recently and there are no statistics on its malfunctions yet;
- The presence of a second row of nozzles should eliminate the problem of valve coking;
- The catalyst is close to the block and its crumbs can get into the combustion chamber;
- The resource of the electronic thermostat and adjustable oil pump is still unknown;
- The engine is equipped with hydraulic compensators, which are picky about the quality of the lubricant.
Frequently asked questions about the Hyundai-Kia G4KN
How much power does the Hyundai-Kia G4KN make?
The Hyundai-Kia G4KN develops 194 hp and 246 Nm of torque.
How much oil does the Hyundai-Kia G4KN take and which one?
Engine oil capacity: 6.0 liters. Recommended oil: 5W-30.
Does the Hyundai-Kia G4KN have a timing belt or chain?
The Hyundai-Kia G4KN uses a timing chain.
Is the Hyundai-Kia G4KN turbocharged?
No, the Hyundai-Kia G4KN is naturally aspirated.
Does the Hyundai-Kia G4KN need valve clearance adjustment?
No, the Hyundai-Kia G4KN has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai-Kia G4KN last?
The typical lifespan of the Hyundai-Kia G4KN is ~250 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G4KN?
Kia K5 2020: city 10.4, highway 5.2, combined 7.1 L/100 km.
What cars was the Hyundai-Kia G4KN installed on?
Hyundai Grandeur 6 (IG) since 2019; Hyundai Sonata 8 (DN8) since 2019; Kia K5 3 (DL3) since 2019; Kia Sportage 5 (NQ5) since 2021.
What are the common problems of the Hyundai-Kia G4KN?
This motor began to be installed only recently and there are no statistics on its malfunctions yet. The presence of a second row of nozzles should eliminate the problem of valve coking. All known problems.
