Engine Hyundai G3LF

The 1.0-liter Hyundai G3LF or Smartstream G 1.0 T-GDI engine has been produced since 2020 and is installed on such popular concern models as Kona, Bayon, as well as Kia Stonic, Ceed and Rio. This motor is usually produced as a Mild Hybrid 48V and is combined with an iMT manual transmission.

Kappa R3 family: G3LA, G3LB, G3LC, G3LD, G3LE, G3LF.


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
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

  • On specialized forums, they complain only about electrical glitches and especially about the Start-Stop system.
  • This motor does not tolerate overheating, gaskets instantly tan and leaks begin.
  • The timing chain does not differ in durability, sometimes it stretches even up to 100,000 km.
  • Also, the owners note excessive engine vibrations and a small resource of its pillows.

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