We purchased the Golf TDI to be a solid feeling, fun to drive, high mileage commuter car. It has all off those attributes. It gets 40mpg combined highway and city. It's much zippier than my Passat V6, and is solid and well-built.
The media interfaces, however, are very buggy. For instance, I pug in my iPhone and am listening to a track, when the bluetooth pairs with the phone. On that event, the multimedia interface dies and no sound comes out until I unplug the iPhone and re-plug it back in.
This and other annoying bugs make the navigation/multimedia package a very bad deal. Customer CARE will not pass along bug reports to the QA department for fixing, so don't expect it to work ever.
6-speed manual shift gearbox. Perfectly spaced gears; little notes pop up telling you when to up/down shift for best mileage.
Fix the multimedia interface bugs.
The navigation system is less useful than what you can get on your smartphone.
Agree with you on the bluetooth issue.
What works faster however is re-touching the console button for whatever you were listening to - media, satellite, fm radio etc.
It takes a minute but picks up where you left off.