Engine Hyundai G6AV

The Hyundai G6AV 2.5-liter V6 gasoline engine was produced by the company from 1995 to 2005 and was installed on the Grandeur and Dynasty, as well as Marcia, a version of the Sonata for the local market. This power unit is essentially a clone of the 24-valve version of the Mitsubishi 6G73 engine.

The Sigma family also included engines: 2.5 L – G6AV; 3.0 L – G6AT, G6CT; 3.5 L – G6AU, G6CU.

The engine was installed on:

  • Hyundai Dynasty 1 (LX) in 1996 – 2005;
  • Hyundai Grandeur 2 (LX) in 1995 – 1998;
  • Hyundai Sonata 3 (Y3) in 1995 – 1998.


Production years 1995-2005
Displacement, cc 2497
Fuel system distributed injection
Power output, hp 160 – 170
Torque output, Nm 205 – 225
Cylinder block cast iron V6
Block head aluminum 24v
Cylinder bore, mm 83.5
Piston stroke, mm 76
Compression ratio 10.0
Features DOHC
Hydraulic lifters yes
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 4.6
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Hyundai Grandeur 1997)
— city
— highway
— combined
Engine lifespan, km ~200 000
Weight, kg 175

Disadvantages of the Hyundai G6AV engine

  • The engines of the first years had problems with the quality of the assembly and its components.
  • A typical story is the cranking of the liners and the wedge of the motor at a mileage of 100,000 km.
  • Power units after 2000 are more reliable, but are very rare.
  • Most of the complaints on the specialized forums are related to the oil burner and the contamination of the injectors.
  • The weak points of the engine also include the ignition system and hydraulic lifters.

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