Engine Hyundai-Kia G4KK

The 2.4-liter Hyundai G4KK engine or 2.4 MPi Hybrid was produced from 2011 to 2017 and was installed only on hybrid modifications of the American versions of the Hyundai Sonata and Kia Optima. Hybrids for the Asian market were equipped with a 2.0-liter Nu series unit under the G4NE index.

Theta 2.4L family: G4KC, G4KE, G4KG, G4KJ, G4KK.

The engine was installed on:

  • Hyundai Grandeur 5 (HG) in 2011 – 2017;
  • Hyundai Sonata 6 (YF) in 2011 – 2015;
  • Kia Optima 3 (TF) in 2011 – 2015.


Production years 2011-2017
Displacement, cc 2359
Fuel system distributed injection
Power output, hp 169
209 (with electrical component)
Torque output, Nm 212
265 (with electrical component)
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 88
Piston stroke, mm 97
Compression ratio 13.0
Features Atkinson cycle
Hydraulic lifters no
Timing drive chain
Phase regulator Dual CVVT
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.6
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Hyundai Sonata Hybrid 2012)
— city
— highway
— combined
Engine lifespan, km ~270 000

Disadvantages of the Hyundai G4KK engine

  • The main problems are not their reliability, but the shortage of specialists or spare parts;
  • Most often, various electrical glitches and antifreeze leaks are discussed on the forums;
  • The collector is located very close to the cylinder block and there are scuffs here;
  • There are no hydraulic lifters, so valve clearances need to be adjusted periodically.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top