What is the best way to maintain the fuel efficiency of my Toyota Highlander?

I recently purchased a Toyota Highlander and I want to make sure I am taking the necessary steps to maintain its fuel efficiency. What are some tips and tricks for keeping my Highlander's gas mileage at its maximum potential?

Regularly check and replace your air filter. A dirty air filter can decrease your mileage by up to 10%.

Use the recommended grade of motor oil for your Highlander as listed in the owner's manual. The wrong grade can decrease your fuel efficiency.

Avoid unnecessary idling and use cruise control on the highway to maintain a consistent speed.

Keep your tires properly inflated to the recommended pressure. Under-inflated tires can decrease your gas mileage by up to 3%.

Avoid carrying unnecessary weight in your Highlander as it can decrease its fuel efficiency.