Engine Hyundai G6AT

The 3.0-liter gasoline V6 engine Hyundai G6AT was produced by the company from 1990 to 2003 and was installed on such popular concern models as the Sonata sedan and Galloper SUVs. This power unit in its design was a clone of the famous Mitsubishi 6G72 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 Galloper 1 (JI) in 1991 – 1997; Galloper 2 (JK) in 1997 – 2003;
  • Hyundai Sonata 2 (Y2) in 1990 – 1993; Sonata 3 (Y3) in 1993 – 1998.


Production years 1990-2003
Displacement, cc 2972
Fuel system distributed injection
Power output, hp 141 – 161
Torque output, Nm 220 – 250
Cylinder block cast iron V6
Block head aluminum 12v
Cylinder bore, mm 91.1
Piston stroke, mm 76
Compression ratio 8.9
Features SOHC
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 Galloper 1995)
— city
— highway
— combined
Engine lifespan, km ~220 000
Weight, kg 169.3

Disadvantages of the Hyundai G6AT engine

  • The motors of the first years of production had poor build quality and some components;
  • Especially often, the engines of this line were wedged due to poor-quality liners;
  • Then the quality increased and now these power units are scolded only for the oil burner;
  • Also on the specialized forums there are a lot of complaints about floating speed due to throttle contamination;
  • Weaknesses include short-lived hydraulic lifters and ignition system.

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