True or False: The fuel injection system mixes fuel and air and supplies it to the cylinders.

The statement is true because the fuel injection system is designed to efficiently mix fuel and air in the correct proportions before delivering it to the engine's cylinders for combustion. This mixing is crucial for achieving optimal engine performance and fuel efficiency.

Fuel injection systems have largely replaced carburetors in modern vehicles due to their ability to provide more precise control over the air-fuel mixture. This precision leads to improved combustion efficiency, reduced emissions, and better overall engine performance regardless of the engine's temperature or type of fuel being used, including both gasoline and diesel engines.

In summary, the role of the fuel injection system in mixing fuel and air before supplying it to the cylinders is fundamental to the operation of internal combustion engines, which is why the answer is true.