What is the best type of engine for the Ford S-Max?

I am considering purchasing a Ford S-Max, but I am torn between the different engine options. Which engine is the most reliable and provides the best performance for this car?

Based on my personal experience as a Ford mechanic, I would definitely recommend going with the EcoBoost engine option. It offers great performance and has proven to be very reliable.

I have owned a Ford S-Max with the diesel engine for the past 5 years and have had no issues with it. It also provides excellent fuel efficiency.