We've been expecting new mid-engine roadsters from Audi, Porsche, and Volkswagen for some time now, and a new report fromAutocarconfirms the Audi version --dubbed R4 -- is headed to production by ...

Each of the three car brands will differentiate their model with unique interior layouts, different engines and a big price difference. The R4 will slot somewhere between the TT and the R8 in Audi ...