What MPG from an X350 XJR ?

[WindsorRob]

Hi - started looking at these as they seem to be great value.

Just wondered if there are any owners on here and if so if they have a view on MPG ?

I do 80% motorway miles so I'm thinking they may not be too bad in this kind of use.

Any info appreciated.

[WindsorRob]

Actually - just seen the other post that relates to XJR so this gives some good info inc MPG. Any other comments on MPG though appreciated.