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.
Frequently asked questions about the Hyundai G4FU
How much power does the Hyundai G4FU make?
The Hyundai G4FU develops 150 - 180 hp and 250 - 265 Nm of torque.
How much oil does the Hyundai G4FU take and which one?
Engine oil capacity: 4.8 liters. Recommended oil: 5W-30.
Does the Hyundai G4FU have a timing belt or chain?
The Hyundai G4FU uses a timing chain.
Is the Hyundai G4FU turbocharged?
Yes, the Hyundai G4FU is turbocharged.
Does the Hyundai G4FU need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the Hyundai G4FU last?
The typical lifespan of the Hyundai G4FU is ~250 000 km with proper maintenance.
What is the fuel consumption of the Hyundai G4FU?
Hyundai Tucson MHEV 2021: city 7.3, highway 5.2, combined 5.9 L/100 km.
What cars was the Hyundai G4FU installed on?
Hyundai Tucson 4 (NX4) since 2020; Kia Sportage 5 (NQ5) since 2021.
What are the common problems of the Hyundai G4FU?
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. All known problems.
My name is Pat and I have a 2023 Tucson NX4
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The reccomended oil for the G4FU engine is 0W-20.