Overview The F16D3 engine is a naturally aspirated 1.6-liter inline-four petrol engine developed by GM (originally GM Daewoo). It was widely used between 2004 and 2013 in compact Chevrolet models such as the Aveo, Optra, Lacetti, and the first-generation Cruze. The engine is known for its simplicity, durability, and suitability for daily commuting and small family cars. Engine Specifications Performance …