How Can I Improve the Performance of My Ford Focus's Engine?

I have noticed that my Ford Focus's engine feels sluggish and underpowered. Are there any ways to improve its performance without breaking the bank?

First, make sure your air filter is clean and not clogged. A dirty air filter can restrict air flow and decrease performance.

Consider upgrading your spark plugs to a higher quality brand. This can improve the ignition system and lead to better engine performance.

Switch to high-performance synthetic oil for your frequent oil changes. It can reduce friction and improve engine efficiency.