Could easily rack up 2.5k i did 1200 going to scotland and back in a weekend lol. Take fuels cans and a spare wheel, also france has laws stating you should have certain things in your car (warning triangle, hi vis, pack of spare bulbs etc etc) so would be worth checking if the countries you're heading too have similar laws Another thing to look at You can get European breakdown cover but make sure it covers you to be towed home as some of them just take you to a local garage.