How to maintain the best fuel efficiency for my Kia Sportage?

I've noticed that my Kia Sportage's fuel efficiency has decreased over time. What steps can I take to maintain the best fuel efficiency for my vehicle?

Avoid heavy acceleration and braking, as it can significantly decrease fuel efficiency.

Get your tires inflated to the recommended pressure, as under-inflated tires can negatively impact fuel efficiency.

Avoid carrying excess weight in your vehicle, as it can increase the strain on the engine and decrease fuel efficiency.