Ohhh yes, got a summer holiday driving down to Spain in it this year all booked, hoping to see 28/30mpg as I just got 32mpg from Southampton to Lincoln last weekend.
Currently getting 3 rear windows tinted for the benefit of my little one of course![]()
You should easily get 30MPG at 80/85MPH which IIRC is the speed limit for most of the way. As the roads are a lot emptier there's a lot less slowing down for traffic and speeding up again - I always find I get better MPG in Europe. When I moved down to France in my old XJ6 I packed the car full of all my stuff, did 80/85 most of the way down and got 34MPG. My dad managed 38 following me in my old MR2, But I reckon he was a lot less comfortable!