Since 2019, popular models like the Sonata, Elantra, and K5 have been equipped with the Hyundai G4FP 1.6-liter turbo engine, also known as the Smartstream 1.6 T-GDI. A new CVVD variable valve timing system sets this turbo engine apart.

G4FA, G4FL, G4FS, G4FC, G4FD, G4FG, G4FJ, G4FM, G4FP, G4FT, and G4FU are members of the Gamma family.
Specifications
| Production years | since 2019 |
| Displacement, cc | 1598 |
| Fuel system | direct injection |
| Power output, hp | 180 – 204 |
| Torque output, Nm | 265 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 75.6 |
| Piston stroke, mm | 89 |
| Compression ratio | 10.5 |
| Features | CVVD |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | yes |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.5 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Hyundai Kona 2020) — city — highway — combined |
7.6 5.6 6.2 |
| Engine lifespan, km | ~240 000 |
| Weight, kg | 108.2 |
The engine was installed on:
- Hyundai Elantra 7 (CN7) since 2020;
- Hyundai Kona 1 (OS) since 2020;
- Hyundai Sonata 8 (DN8) since 2019;
- Hyundai Tucson 4 (NX4) since 2020;
- Kia Cerato 4 (BD) since 2019;
- Kia K5 3 (DL3) since 2019.
Disadvantages of the Hyundai G4FP engine
The new CVVD variable valve timing system’s dependability is unknown.
The direct fuel injection system causes the valves to become quickly overgrown with soot; the turbine is new here, and we hope it won’t drive oil on low runs;
The valves will need to be adjusted because hydraulic lifters did not appear.
