What is the best type of engine for the Ford Transit Custom?

I am looking to buy a Ford Transit Custom and I'm wondering what type of engine would be the best option for this car. I want something that is reliable and fuel efficient. Can anyone provide any recommendations or personal experiences?

I would recommend going with the 2.0L EcoBlue diesel engine. It has excellent fuel efficiency and is quite reliable.

I've had good experience with the 2.2L Duratorq TDCi engine. It's powerful and has decent fuel efficiency.

For the best fuel efficiency, I would suggest the 1.0L EcoBoost engine. However, it may not have as much power as the other options.