We don't have a car but we bought a TOMTOM GPS device for our vacation in France in October. We were very pleased with it, but since we have no use for it here in Hamburg, we're selling it. The price was 160 Euro and I'm asking 140 Euro. There is also a coupon for 20 Euros worth of gas included. Here are more details:
TOMTOM ONE IQ Routes Edition
Europe
42 Countries
English and many other languages
portable - can also be used by pedestrians and bike riders.

Please feel free to contact me with any questions:
Tel: 040-3196425
Email: ex-pat@hamburg.de