First of all, there's a broad range of both economy and high-end vehicles to rent in Germany. What you opt for will depend on how much you're willing to spend and the activities you've got planned. Specialty and prestige vehicles are all about mod cons and comfort. If you're splashing out, why not book an elite SUV, or perhaps a fancy medium-sized vehicle? On the other hand, if you're just after something to get from A to B at the cheapest price possible, maybe go for an economy compact vehicle (or something else that won't break the bank).