F Series

**Mazda F Series Engines**

The Mazda F Series engines are a family of inline-four gasoline engines produced by Mazda Motor Corporation. Introduced in 1989, the F Series engines are known for their compact size, lightweight construction, and high specific output. They are used in a wide range of Mazda vehicles, from the Mazda2 subcompact to the Mazda6 mid-size sedan.

The F Series engines feature a number of unique attributes, including:

* **Variable Valve Timing (VVT)**: VVT allows the engine to optimize valve timing for different operating conditions, resulting in improved power, torque, and fuel economy.
* **Variable Valve Lift (VVL)**: VVL allows the engine to vary the lift of the intake valves, providing a broader powerband and improved fuel economy.
* **Direct Fuel Injection (DFI)**: DFI sprays fuel directly into the combustion chamber, resulting in improved fuel atomization and combustion efficiency.
* **High Compression Ratio**: The F Series engines feature a high compression ratio, which improves thermal efficiency and power output.