How to maintain the efficiency of my Toyota Yaris engine?

I have noticed a decrease in fuel efficiency and power in my Toyota Yaris. What are some tips I can follow to maintain the efficiency of my engine and improve its performance?

Regularly change your engine oil and air filter to keep your engine running smoothly. Also, make sure to regularly check your tire pressure and get your wheels aligned to reduce resistance and improve fuel efficiency.

Avoid harsh driving habits such as sudden acceleration and braking. This puts unnecessary strain on your engine and can decrease its efficiency over time.

Consider investing in a fuel system cleaner or additive to remove any build-up in your engine and improve its performance. Just make sure to follow the manufacturer's instructions.