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.
Nu family: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN, G4NJ, G4NM, G4NS, G4NR.
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.
Frequently asked questions about the Hyundai G4NN
How much power does the Hyundai G4NN make?
The Hyundai G4NN develops 233 - 240 hp and 353 Nm of torque.
How much oil does the Hyundai G4NN take and which one?
Engine oil capacity: 5.0 liters. Recommended oil: 0W-20.
Does the Hyundai G4NN have a timing belt or chain?
The Hyundai G4NN uses a timing chain.
Is the Hyundai G4NN turbocharged?
Yes, the Hyundai G4NN is turbocharged.
Does the Hyundai G4NN need valve clearance adjustment?
No, the Hyundai G4NN has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai G4NN last?
The typical lifespan of the Hyundai G4NN is ~220 000 km with proper maintenance.
What is the fuel consumption of the Hyundai G4NN?
Kia K5 2021: city 9.6, highway 5.5, combined 6.8 L/100 km.
What cars was the Hyundai G4NN 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.
What are the common problems of the Hyundai G4NN?
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. All known problems.
