Engine Hyundai G4DG

The 1.3-liter Hyundai G4DG engine was produced from 1985 to 1995 under license from Mitsubishi and was essentially a complete copy of their popular 8-valve power unit under the 4G13 index. In addition to the injection version, there is often a modification of the G4AG equipped with a carburetor.

The Orion family also includes engines: G4DJ.

The engine was installed on:

  • Hyundai Excel 1 (X1) in 1985 – 1989; Excel 2 (X2) in 1989 – 1995;
  • Hyundai Pony 3 (X1) in 1985 – 1989; Pony 4 (X2) in 1989 – 1994.


Production years 1985-1995
Displacement, cc 1298
Fuel system injector
Power output, hp 65 – 75
Torque output, Nm 100 – 120
Cylinder block cast iron R4
Block head aluminum 8v
Cylinder bore, mm 71
Piston stroke, mm 82
Compression ratio 9.7
Features no
Hydraulic lifters no
Timing drive belt
Phase regulator no
Turbocharging no
Recommended engine oil 10W-40
Engine oil capacity, liter 3.3
Fuel type petrol
Euro standards EURO 1/2
Fuel consumption, L/100 km (for Hyundai Pony 1993)
— city
— highway
— combined
Engine lifespan, km ~200 000
Weight, kg 112 (without attachments)

Disadvantages of the Hyundai G4DG engine

  • The main problem of the engine is oil consumption due to stuck piston rings;
  • Floating engine speeds are regularly encountered due to throttle wear;
  • Monitor the condition of the timing belt, since when it breaks, the valves usually bend here;
  • Many Hyundai owners with such a unit complain about difficult starting in winter;
  • Also, on specialized forums, an unreliable gas pump and weak engine mounts are often scolded.

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