1. Remember to ask about the space available for luggage or if the car has a trunk. It sucks when you realize you can't keep your luggage out of sight of would be thieves.
  2. A v6 matters when your going to drive in places like Germany where there is go, go faster, and get out of the way.
  3. Diesel is cheaper
  4. Size does matter when you have to park in tiny places or make room for oncoming traffic on narrow European roads.
  5. You're not allowed to take some types of rental cars from Germany into Eastern countries and others you must get permission.
  6. You must buy a vignette (driving pass) to legally drive the highways of Switzerland and Austria.
  7. It is beautiful in Germany, Austria and Switzerland.