How can I improve Toyota Corolla's fuel efficiency?

I've noticed that my Toyota Corolla is not very fuel efficient, what are some steps I can take to improve its fuel efficiency?

Regular maintenance is key for improving fuel efficiency. Make sure your air filter and spark plugs are cleaned and replaced as needed.

Avoid excess weight in your vehicle and try to combine errands and trips to minimize driving time.

Consider using synthetic oil, as it can improve fuel efficiency by reducing friction in the engine.