A four-cylinder engine is a type of internal combustion engine that uses four cylinders to convert fuel into power. Each cylinder contains a piston that moves up and down, creating energy through a series of controlled explosions. This design is popular in many vehicles, including compact cars and sedans, because it offers a good balance of power and fuel efficiency. These engines are often lighter and more compact than larger engines, making them ideal for smaller vehicles. Many modern four-cylinder engines also feature advanced technologies, such as turbocharging, which boosts performance without significantly increasing fuel consumption. This makes them a smart choice for drivers looking for efficiency and reliability.