The Hyundai G4FU or Smartstream MHEV 1.6-liter turbo engine has been produced since 2020 and is installed only on the popular Tucson crossover in Europe and its similar Sportage. The motor is a mild hybrid version of the G4FP unit with a 48-volt starter-alternator.
Gamma family: G4FA, G4FL, G4FS, G4FC, G4FD, G4FG, G4FJ, G4FM, G4FP, G4FT, G4FU.
Specifications
| Production years | since 2020 |
| Displacement, cc | 1598 |
| Fuel system | direct injection |
| Power output, hp | 150 – 180 |
| Torque output, Nm | 250 – 265 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 75.6 |
| Piston stroke, mm | 89 |
| Compression ratio | 10.5 |
| Features | CVVD, MHEV |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | on both shafts |
| Turbocharging | yes |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 4.8 |
| Fuel type | petrol |
| Euro standards | EURO 6d |
| Fuel consumption, L/100 km (for Hyundai Tucson MHEV 2021) — city — highway — combined |
7.3 5.2 5.9 |
| Engine lifespan, km | ~250 000 |
| Weight, kg | 122 |
The engine was installed on:
- Hyundai Tucson 4 (NX4) since 2020;
- Kia Sportage 5 (NQ5) since 2021.
Disadvantages of the Hyundai G4FU engine
- This hybrid unit has appeared recently and there is no information about its breakdowns yet.
- On specialized forums, they don’t scold him much and complain only about rare glitches.
- Due to the presence of direct fuel injection, the intake valves are overgrown with soot here.
- Turbo engines of this series often have to change the chain to 100 – 150 thousand km.
- There are no hydraulic lifters and every 100,000 km you need to adjust the valve clearance.
The reccomended oil for the G4FU engine is 0W-20.