What is the best way to maintain the efficiency of a Ford Focus engine?

I recently bought a Ford Focus and I want to make sure it stays in top condition. What are some tips for keeping the engine running smoothly and efficiently?

Regular oil changes and tune-ups are crucial for maintaining engine efficiency. Make sure to follow the recommended schedule for your particular model.

Avoid revving the engine unnecessarily and try to accelerate slowly. This can help prolong the life of your engine.

Using high quality fuel and regularly cleaning or replacing the air filter can also help improve engine efficiency.