What is the primary advantage of a turbocharged engine?

The primary advantage of a turbocharged engine is the increased power output without a corresponding increase in engine size. Turbocharging allows for more air to enter the engine's combustion chamber, which enhances the combustion process by allowing for more fuel to be burned. This results in higher power levels without the need to increase the physical size or displacement of the engine itself. Consequently, a smaller engine can produce power levels that are comparable to larger naturally aspirated engines, leading to improved overall efficiency in terms of performance.

When examining the other options, it is important to note that while turbocharged engines can lead to better fuel efficiency under certain conditions, the primary purpose of a turbocharger is to enhance power output rather than decrease fuel consumption directly. Likewise, while reduced emission levels can sometimes be an outcome of more efficient combustion due to turbocharging, it is not the foundational function of a turbocharger. Lastly, while maintenance costs can vary depending on the design and technology of the turbocharger system, this does not define its primary advantage compared to robust power output capabilities.