Chinese models like the Custo, Sonata, Kia K5, and Carnival are equipped with the 2.0-liter Hyundai G4NN or Smartstream G 2.0 T-GDI engine, which has been manufactured since 2019. Some cars from other Asian nations have this turbo engine.
The engines G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, and G4NN are members of the Nu family.
Specifications
| Production years | since 2019 |
| Displacement, cc | 1975 |
| Fuel system | direct injection |
| Power output, hp | 233 – 240 |
| Torque output, Nm | 353 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 80.5 |
| Piston stroke, mm | 97 |
| Compression ratio | 10.0 |
| Features | ISG |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | yes |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 5.0 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Kia K5 2021) — city — highway — combined |
9.6 5.5 6.8 |
| Engine lifespan, km | ~220 000 |
| Weight, kg | 121 |
The engine was installed on:
- Hyundai Custo 1 (KU) since 2021;
- Hyundai Sonata 8 (DN8) since 2019;
- Kia Carnival 4 (KA4) since 2021;
- Kia K5 3 (DL3) since 2020.
Disadvantages of the Hyundai G4NN engine
It is primarily commended and reprimanded by the Start-Stop system on specialized forums.
It has carbon buildup on the intake valves, just like all direct injection engines.
Additionally, the timing chain does not have a very high resource for engines of this line.