The G4HC/G4HE is a 4-cylinder 3 valves per cylinder engine that displaces 1.0 L (999 cc) with a larger 66 mm × 73 mm (2.60 in × 2.87 in) bore and stroke.

The G4HD/G4HG is a 4-cylinder 3 valves per cylinder engine that displaces 1.1 L (1,086 cc) with a larger 67 mm × 77 mm (2.64 in × 3.03 in) bore and stroke.

This engine has been used in Hyundai's i10 (PA), Atos, Santro Xing cars and Kia Picanto.

Firing Order of this engine is 1-3-4-2 and idle RPMs are 750± 100.

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