How to maintain the fuel efficiency of a Toyota Highlander?

My family and I love our Toyota Highlander, but it seems like the fuel efficiency has decreased over time. How can we maintain its fuel efficiency?

Proper tire pressure and regular oil changes can greatly impact the fuel efficiency of your Toyota Highlander. Make sure to check and maintain them regularly.

Avoid idling for long periods of time and try to combine errands into one trip to reduce unnecessary driving. This will help improve the fuel efficiency of your Toyota Highlander.

Consider using a fuel additive or changing your air filter to improve the engine's performance and increase fuel efficiency.