Latest Range Rover sport - 5.0 mpg?

[djohnson]

Hi - I am getting a little bored of my current Range Rover and considering the latest RRS with the 5.0 supercharged engine. I do about 20k miles per year much on motorways and can live with early 20s mpg on a run but any less starts to feel a bit thirsty. Anyone with a current supercharged sport willing to share mpg on a run please? Many thanks for any replies.

[djohnson]

Thanks

[djohnson]

A bit of man maths is all that's required...