Which Ford S-Max model has the best fuel efficiency?

I am considering buying a Ford S-Max but I am concerned about its fuel efficiency. Can anyone tell me which model offers the best fuel efficiency and any tips on how to maximize it?

The Ford S-Max model with the best fuel efficiency is the EcoBoost engine option. You can maximize its efficiency by practicing smooth acceleration and using cruise control on the highway.

I personally have the diesel engine option and have been able to achieve great fuel efficiency. I recommend keeping your tires properly inflated and avoiding excessive idling.