When i got my March (thanks Frank (Y)), did Birmingham to Lisbon in 3 days, first day i manage to pass Paris (did the ferry from Dover to Calais) and slept on a gas station, second day i manage to enter Portugal and sleep at my cousins house in Mirandela (3 countries in one day :wasntme
, next day more 500km to Lisbon, did something like 1.550miles with 6 and a 1/2 tanks...