The 2.0-liter Hyundai-Kia G4NJ has been built in China since 2020 for local versions of the Kia Sportage Ace and the Hyundai ix35, and is best known as the engine of the Hyundai Mufasa crossover. It is a 161-hp naturally aspirated engine of the Nu family with port injection.
Nu family: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN, G4NJ, G4NM, G4NS, G4NR.
Specifications
| Production years | since 2020 |
| Displacement, cc | 1999 |
| Fuel system | distributed injection |
| Power output, hp | 161 |
| Torque output, Nm | 193 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 97 |
| Compression ratio | 10.8 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | no |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | petrol |
| Fuel consumption, L/100 km (for Hyundai Mufasa 2024) — city — highway — combined |
8.9 6.3 6.9 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 118 |
The engine was installed on:
- Hyundai ix35 2 (NU) since 2020;
- Hyundai Mufasa 1 (NU2) since 2020;
- Kia Sportage Ace 3 (NP) since 2021.
Disadvantages of the Hyundai-Kia G4NJ engine
- A simple naturally aspirated engine with port injection;
- Chinese owners report several cases of oil consumption due to cylinder scuffing;
- Engines of this series are known for a short-lived timing chain; it remains to be seen how it performs here;
- Outside its home markets, spare parts and used engines are hard to find.
Frequently asked questions about the Hyundai-Kia G4NJ
How much power does the Hyundai-Kia G4NJ make?
The Hyundai-Kia G4NJ develops 161 hp and 193 Nm of torque.
How much oil does the Hyundai-Kia G4NJ take and which one?
Engine oil capacity: 4.3 liters. Recommended oil: 0W-20.
Does the Hyundai-Kia G4NJ have a timing belt or chain?
The Hyundai-Kia G4NJ uses a timing chain.
Is the Hyundai-Kia G4NJ turbocharged?
No, the Hyundai-Kia G4NJ is naturally aspirated.
Does the Hyundai-Kia G4NJ need valve clearance adjustment?
No, the Hyundai-Kia G4NJ has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai-Kia G4NJ last?
The typical lifespan of the Hyundai-Kia G4NJ is ~250 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G4NJ?
Hyundai Mufasa 2024: city 8.9, highway 6.3, combined 6.9 L/100 km.
What cars was the Hyundai-Kia G4NJ installed on?
Hyundai ix35 2 (NU) since 2020; Hyundai Mufasa 1 (NU2) since 2020; Kia Sportage Ace 3 (NP) since 2021.
What are the common problems of the Hyundai-Kia G4NJ?
A simple naturally aspirated engine with port injection. Chinese owners report several cases of oil consumption due to cylinder scuffing. All known problems.
