Welcome to the 2013 Audi A3 TDI and 2014? VW Golf TDI sub forum
I just added this section because the new Audi A3 will be released later next week. The chassis will be shared with the mk7 Golf which should come out late 2012 or 2013 in Europe. This doesn't mean it'll be released the same year in North America because the Golf was heavily revised for 2010. VW also has a history with this: the mk5 Golf was sold in Europe for 2 years before the mk5 came to the US. However, the mk4 Golf was still being built in Brazil at the time vs. the mk6 Golf which is being built in Germany for the US and Europe market.
If the VW golf is too different from the Audi A3 then I'll split the topics off but for now, this forum is divided by chassis family and engines. Thanks for your interest!