The 2.0-liter Hyundai G4NN or Smartstream G 2.0 T-GDI engine has been produced since 2019 and is installed on Chinese versions of such models as Custo, Sonata, as well as Kia K5 and Carnival. This turbo engine is found on some concern cars for other Asian countries.
The Nu family includes engines: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN.
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
- On specialized forums, it is mainly praised and scolded only by the Start-Stop system.
- Like all direct injection engines, it suffers from carbon deposits on the intake valves.
- Also, for engines of this line, the timing chain does not have a very high resource.
