The 2.0-liter Hyundai G4NG or Sonata 2.0 GDi Hybrid engine was produced from 2015 to 2020 and was installed on the hybrid versions of the 7th generation Sonata and the similar 4th generation Optima.
Nu family: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN, G4NJ, G4NM, G4NS, G4NR.
Specifications
| Production years | 2015-2020 |
| Displacement, cc | 1999 |
| Fuel system | direct injection |
| Power output, hp | 154 (205 with electrical component) |
| Torque output, Nm | 190 (375 with electrical component) |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 81 |
| Piston stroke, mm | 97 |
| Compression ratio | 13.5 |
| Features | Atkinson cycle |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.3 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Hyundai Sonata PHEV 2017) — city — highway — combined |
4.9 4.5 4.8 |
| Engine lifespan, km | ~250 000 |
The engine was installed on:
- Hyundai Sonata 7 (LF) in 2015 – 2019;
- Kia Optima 4 (JF) in 2016 – 2020.
Disadvantages of the Hyundai G4NG engine
- The main problem is not reliability, but the lack of necessary specialists and spare parts;
- On specialized forums, most often they complain about all sorts of glitches in electrical;
- The catalytic converter is close to the cylinder block, so scuffing is quite possible;
- Often the generator fails, which is equipped with its own cooling.
Frequently asked questions about the Hyundai-Kia G4NG
How much power does the Hyundai-Kia G4NG make?
Power output of the Hyundai-Kia G4NG, hp: 154 (205 with electrical component). Torque, Nm: 190 (375 with electrical component).
How much oil does the Hyundai-Kia G4NG take and which one?
Engine oil capacity: 4.3 liters. Recommended oil: 5W-30.
Does the Hyundai-Kia G4NG have a timing belt or chain?
The Hyundai-Kia G4NG uses a timing chain.
Is the Hyundai-Kia G4NG turbocharged?
No, the Hyundai-Kia G4NG is naturally aspirated.
Does the Hyundai-Kia G4NG need valve clearance adjustment?
No, the Hyundai-Kia G4NG has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Hyundai-Kia G4NG last?
The typical lifespan of the Hyundai-Kia G4NG is ~250 000 km with proper maintenance.
What is the fuel consumption of the Hyundai-Kia G4NG?
Hyundai Sonata PHEV 2017: city 4.9, highway 4.5, combined 4.8 L/100 km.
What cars was the Hyundai-Kia G4NG installed on?
Hyundai Sonata 7 (LF) in 2015 - 2019; Kia Optima 4 (JF) in 2016 - 2020.
What are the common problems of the Hyundai-Kia G4NG?
The main problem is not reliability, but the lack of necessary specialists and spare parts. On specialized forums, most often they complain about all sorts of glitches in electrical. All known problems.
