Audi A3 2013 is a new four-door small sedan using third generation technology of transverse modular system. This model features completely revamped three-door hatchback made of aluminum-steel making its weight 200 pound lesser than earlier models. Underneath the hood 2013 Audi A3 has 1.4-liter TFSI four-cylinder 121-hp gas engine. This model is has better and intelligent virtual connectivity system QNX developed with the collaboration of German group Harman Becke. The Audi A3 will be made available in USA in coming October. [via]