Peugeot wouldn't be my first choice but some of my friends drive them, and the seem to be happy. Main advantage of the Peugeot HDI FAP Diesel engines is the fact that they got the unburned carbon filters (Rußpartikelfilter), which will probably one of the factors determining the automotive tax in the future.

I guess I'd start with a authorized Peugeot dealer, they usually have large numbers of traded in cars, I'm sure you'll find several dealers in and around Nürnberg.