Do you have any special tips about the differences renting in Europe and the States?

For Europeans (or people from any where else for that matter!) going to the States and renting a car, remember that all hire cars that you rent in the US are automatic transmission and are not usually diesel, only petrol engines.

For US residents traveling to Europe and elsewhere the opposite applies, automatic transmission cars are the exception rather than the norm.These cars rank in the groups that should be booked early and which may not be available at all car rental locations!