How to maximize fuel efficiency in a Ford S-Max?

I just got my new Ford S-Max and I want to maximize its fuel efficiency. What are some tips and tricks I can use to achieve this? Are there any aftermarket parts that can help?

From my experience, the best way to maximize fuel efficiency in a Ford S-Max is to use cruise control on long drives and avoid aggressive acceleration. Additionally, replacing the air filter regularly can improve fuel efficiency.

I have found that using a fuel additive can also help improve fuel efficiency. Look for one that specifically mentions increasing mpg.