What is the most reliable transmission for a Ford S-Max?

I've heard mixed reviews about the different types of transmissions available for the Ford S-Max. I want to make sure I'm choosing the most reliable option. Can anyone recommend the best one?

Based on my experience, I would recommend the 6-speed automatic transmission. It's been very reliable for me and requires minimal maintenance.

I've had good luck with the 7-speed automatic transmission. It's more efficient and has better acceleration compared to the 6-speed.

I prefer the 8-speed automatic transmission. It offers a smooth ride and improved fuel efficiency.