How can I improve my gas mileage on my Toyota Highlander?

I've noticed that my Toyota Highlander's gas mileage isn't as good as it used to be. Are there any tips or tricks I can use to increase my fuel efficiency?

One way to improve your gas mileage is to regularly maintain your vehicle. This includes getting regular oil changes, replacing air filters, and ensuring your tires are properly inflated.

Another tip is to avoid excessive idling and aggressive driving. These habits can greatly decrease your gas mileage. Also, try to plan your trips efficiently to avoid unnecessary driving.

Consider using a fuel additive or cleaner to help improve your gas mileage. These products can help remove buildup in your engine and optimize its performance.