How to improve the fuel efficiency of my Toyota Yaris?

I recently bought a Toyota Yaris and I love everything about it except for its fuel efficiency. What are some tips or modifications that I can do to improve its fuel efficiency?

One way to improve your Toyota Yaris' fuel efficiency is to regularly check and replace your air filter. A dirty air filter can reduce fuel efficiency by up to 10%. Make sure to replace it every 12 months or 12,000 miles.

Another tip is to keep your tires properly inflated. Underinflated tires can decrease fuel efficiency by 0.3% for every 1 psi drop in pressure. Check your tire pressure monthly and make sure to inflate them to the recommended pressure.

Consider switching to synthetic oil, which can improve fuel efficiency by 2-3%. It also lasts longer and can save you money in the long run. Just make sure to use the correct type and viscosity recommended for your Toyota Yaris.

Finally, make sure to avoid unnecessary weight in your car. The heavier your car is, the more fuel it will consume. Clean out any unnecessary items from your trunk and remove roof racks or cargo carriers when not in use.