They do this sort of journey so well! We've just done 1500 miles to France and back via their (smooth) motorways and taking full advantage of the higher speed limits (85mph in the dry vs 70 in the UK) meaning much higher averages could be achieved compared with the rubbish roads we have here

5 up, fully loaded averaged 20.6mpg at regular unleaded prices of EUR1.58/litre (USD8.65/USG )

Showed my friends Disco4 and RRS how well they go up the Jura mountains too - pretty good for a 6 year old car!