Since 2020, the 1.0-liter Hyundai G3LF or Smartstream G 1.0 T-GDI engine has been manufactured and is found in well-known models like the Kona, Bayon, Kia Stonic, Ceed, and Rio. This motor is typically manufactured as a 48-volt mild hybrid and paired with an iMT manual transmission.
G3LA, G3LB, G3LC, G3LD, G3LE, and G3LF are members of the Kappa R3 family.
Specifications
| Production years | since 2020 |
| Displacement, cc | 998 |
| Fuel system | direct injection |
| Power output, hp | 120 |
| Torque output, Nm | 172 / 200 (with manual / robotic gearbox) |
| Cylinder block | aluminum R3 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 71 |
| Piston stroke, mm | 84 |
| Compression ratio | 10.5 |
| Features | CVVD, Mild Hybrid 48V |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | Dual CVVT |
| Turbocharging | yes |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 3.6 |
| Fuel type | petrol |
| Euro standards | EURO 6 |
| Fuel consumption, L/100 km (for Hyundai Kona 2022) — city — highway — combined |
6.0 4.7 5.2 |
| Engine lifespan, km | ~200 000 |
| Weight, kg | 86 |
The engine was installed on:
- Hyundai Bayon 1 (BC3) since 2021;
- Hyundai Kona 1 (OS) since 2020;
- Hyundai i20 3 (BC3) since 2020;
- Hyundai i30 3 (PD) since 2020;
- Kia Ceed 3 (CD) since 2021;
- Kia Rio 4 (YB) since 2020;
- Kia Stonic 1 (YB) since 2020.
Disadvantages of the Hyundai G3LF engine
Only electrical problems, particularly with the Start-Stop system, are complained about on specialized forums.
Overheating is not tolerated by this motor, and leaks start as soon as the gaskets tan.
The durability of the timing chain is the same; at times, it can stretch up to 100,000 kilometers.
The owners also report a limited supply of pillows and excessive engine vibrations.