[roundyuk]

Wow, that's strange - my folks lived in Ireland for a number of years, the low spec weirdness was always very strange.

Have you had a look through the main Sensus screen to see if it is anywhere on the interface? Maybe its just the button that is lacking? Do you have the part in the car settings where you can customise the drive mode?

I suspect you have an actual ECO button somewhere on the bottom of the screen?

EDIT - Yup, even the owners manual seems to say it's an option; bummer!

You'll need a software update to make a switch work if you install it; probably more money than it's worth.