Engine Hyundai-Kia G4HA

The 0.8-liter 12-valve Hyundai G4HA engine was produced by the company from 1997 to 2003 and was installed on such models for the Asian market as Atos, Atos Prime, Amica and Kia Visto. There is an atmospheric and supercharged version of such an engine, as well as a gas version of the L4HA.

Epsilon family: G3HA, G4HA, G4HC, G4HE, G4HD, G4HG.

The engine was installed on:

  • Hyundai Atos 1 (MX) in 1997 – 2003.


Production years 1997-2003
Displacement, cc 798
Fuel system distributed injection
Power output, hp 52 (atmospheric G4HA)
70 (turbocharged G4HA-TC)
Torque output, Nm 70 (atmospheric G4HA)
103 (turbocharged G4HA-TC)
Cylinder block cast iron R4
Block head aluminum 12v
Cylinder bore, mm 63
Piston stroke, mm 64
Compression ratio 9.5 (atmospheric G4HA)
8.0 (turbocharged G4HA-TC)
Features SOHC
Hydraulic lifters no
Timing drive belt
Phase regulator no
Turbocharging no (atmospheric G4HA)
Recommended engine oil 5W-30
Engine oil capacity, liter 3.1
Fuel type petrol
Euro standards EURO 2
Fuel consumption, L/100 km (for Hyundai Atos 2002)
— city
— highway
— combined
Engine lifespan, km ~200 000
Weight, kg 97.5

Disadvantages of the Hyundai G4HA engine

  • This unit has no design problems, but you can’t call it a resource.
  • The main troubles are associated with contamination of the throttle and idle speed controller.
  • Engine tripping is also common due to the destruction of the wiring insulation.
  • If you rarely change the fuel filter, it will rust and it will not be easy to remove.
  • Closer to 200,000 km, a major overhaul is usually required with a bore to the repair size.

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