How to improve fuel efficiency on my Toyota Highlander?

I recently purchased a Toyota Highlander and I'm looking for ways to improve its fuel efficiency. What are some tips or modifications I can make to achieve better mileage?

One way to improve fuel efficiency is to keep your tires properly inflated. This can reduce rolling resistance and improve gas mileage.

Another tip is to avoid excessive idling. Turn off your engine if you need to stop for longer than 30 seconds.

You can also try using a fuel additive or opting for a higher octane gasoline to improve your Highlander's performance and efficiency.