Registering or buying a car :
Germany
Registering or buying a car
Deciding whether to take your car or not is something you will need to think about. What is "right" varies from person to person. For example, for my first move, I took my UK car with me for the first 6 months only. This gave me the security blanket when I wasn't sure if I would stay. Had I returned to the UK, I wouldn't have then had to look for a new car. Having decided to stay, I returned my UK car to the UK, and bought a local one. Just make sure that if you decide to take your own car, your insurance covers you properly with a "permanent green card"!
Direct Gov - Taking your car abroad
If you plan on taking your own car permanently, this site should help. Although American, it refers to any car taken into Germany from anywhere else.
US German Embassy - Driving in Germany
Buying a car in Germany is slightly different. Take a look at these sites.
Expatica - Buying a car
How to Germany - Buying a car