Hi all, I am planning my summer trip down to Croatia. My MH is over 3.5 is a two axle and I will have a car on an A Frame. The route I am looking at is Calais Belgium into Germany at Aachen down Germany to South of Munich and across Austria on the A10/A11 via the Karawankentunnel into Slovenia. I prefer to stay on the Autobahn all the way. Question: How do I calculate the go Box charges through Austria? How do I check if my 2007 Fiat 160 multijet is a Euro IV or what is it classed as. Will I be charged as a 4 axle vehicle? Too many questions, I know, maybe I should just go and ask at the border. Any help would be appreciated.