The 2.4-liter Hyundai G4KK engine or 2.4 MPi Hybrid was produced from 2011 to 2017 and was installed only on hybrid modifications of the American versions of the Hyundai Sonata and Kia Optima. Hybrids for the Asian market were equipped with a 2.0-liter Nu series unit under the G4NE index.
Theta 2.4L family: G4KC, G4KE, G4KG, G4KJ, G4KK.
Specifications
| Production years | 2011-2017 |
| Displacement, cc | 2359 |
| Fuel system | distributed injection |
| Power output, hp | 169 209 (with electrical component) |
| Torque output, Nm | 212 265 (with electrical component) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 88 |
| Piston stroke, mm | 97 |
| Compression ratio | 13.0 |
| Features | Atkinson cycle |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.6 |
| Fuel type | petrol |
| Euro standards | EURO 5 |
| Fuel consumption, L/100 km (for Hyundai Sonata Hybrid 2012) — city — highway — combined |
6.7 5.9 6.4 |
| Engine lifespan, km | ~270 000 |
The engine was installed on:
- Hyundai Grandeur 5 (HG) in 2011 – 2017;
- Hyundai Sonata 6 (YF) in 2011 – 2015;
- Kia Optima 3 (TF) in 2011 – 2015.
Disadvantages of the Hyundai G4KK engine
- The main problems are not their reliability, but the shortage of specialists or spare parts;
- Most often, various electrical glitches and antifreeze leaks are discussed on the forums;
- The collector is located very close to the cylinder block and there are scuffs here;
- There are no hydraulic lifters, so valve clearances need to be adjusted periodically.
Frequently asked questions about the Hyundai-Kia G4KK
How much power does the Hyundai-Kia G4KK make?
Power output of the Hyundai-Kia G4KK, hp: 169; 209 (with electrical component). Torque, Nm: 212; 265 (with electrical component).
How much oil does the Hyundai-Kia G4KK take and which one?
Engine oil capacity: 4.6 liters. Recommended oil: 5W-30.
Does the Hyundai-Kia G4KK have a timing belt or chain?
The Hyundai-Kia G4KK uses a timing chain.
Is the Hyundai-Kia G4KK turbocharged?
No, the Hyundai-Kia G4KK is naturally aspirated.
Does the Hyundai-Kia G4KK need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Hyundai-Kia G4KK last?
The typical lifespan of the Hyundai-Kia G4KK is ~270 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G4KK?
Hyundai Sonata Hybrid 2012: city 6.7, highway 5.9, combined 6.4 L/100 km.
What cars was the Hyundai-Kia G4KK installed on?
Hyundai Grandeur 5 (HG) in 2011 - 2017; Hyundai Sonata 6 (YF) in 2011 - 2015; Kia Optima 3 (TF) in 2011 - 2015.
What are the common problems of the Hyundai-Kia G4KK?
The main problems are not their reliability, but the shortage of specialists or spare parts. Most often, various electrical glitches and antifreeze leaks are discussed on the forums. All known problems.
