An Inline-Four Engine is a type of internal combustion engine that features four cylinders arranged in a straight line. This configuration is popular in many vehicles due to its compact size, lightweight design, and efficient fuel consumption. It typically provides a good balance of power and efficiency, making it suitable for small to mid-sized cars. The Inline-Four design often uses a single crankshaft, which helps reduce vibrations and improve smoothness during operation. Many modern vehicles, including those from manufacturers like Toyota and Honda, utilize this engine type for its reliability and performance, contributing to its widespread use in the automotive industry.