What is the most reliable engine for the Ford Transit Custom?

I'm looking to purchase a new Ford Transit Custom and I want to know which engine option is the most reliable. I plan on using it for heavy hauling and want to make sure I get the best engine for my needs.

I highly recommend the 3.5L EcoBoost V6 engine. It has plenty of power and has proven to be reliable for heavy hauling.

I've had good luck with the 2.0L EcoBlue diesel engine. It has good fuel efficiency and has enough power for hauling.

Avoid the 3.2L Duratorq diesel engine. I've heard numerous reports of issues with this engine.

I have the 3.5L V6 engine and it has never given me any problems. I definitely recommend it for heavy hauling.