Engine Hyundai-Kia G4NE

The company assembled the 2.0-liter Hyundai G4NE or 2.0 MPi Hybrid engine from 2012 to 2015 and installed it on the hybrid versions of the Sonata 6 and the similar Optima 3 for the Asian market. In the US market, such hybrids were equipped with a 2.4-liter G4KK unit of the Theta II series.

The Nu family includes engines: G4NB, G4NA, G4NC, G4ND, G4NE, G4NH, G4NG, G4NL, G4NN.

The engine was installed on:

  • Hyundai Sonata 6 (YF) in 2012 -2015;
  • Kia Optima 3 (TF) in 2012 – 2015.


Production years 2012-2015
Displacement, cc 1999
Fuel system distributed injection
Power output, hp 150 (190 with electrical component in 2012-2013 , 177 in 2013-2015)
Torque output, Nm 180 (245 with electrical component in 2012-2013 , 319 in 2013-2015)
Cylinder block aluminum R4
Block head aluminum 16v
Cylinder bore, mm 81
Piston stroke, mm 97
Compression ratio 12.5
Features Atkinson cycle
Hydraulic lifters yes
Timing drive chain
Phase regulator Dual CVVT
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.3
Fuel type petrol
Euro standards EURO 5
Fuel consumption, L/100 km (for Kia Optima Hybrid 2012)
— city
— highway
— combined
Engine lifespan, km ~250 000

Disadvantages of the Hyundai G4NE engine

  • This motor is a real exclusive, there are very few such cars produced.
  • Its main problem is the lack of spare parts and sensible repair specialists.
  • On specialized forums, they often complain about various glitches in the electrical part of the engine.
  • Owners are also constantly faced with oil and coolant leaks.
  • The catalytic converter is located close to the cylinder block and scuffing is quite possible here.

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