The A3 sedan will be built at the country of launch. Chinese press reports that the A3 sedan will be assembled at the FAW-VW joint venture that also manufactures a variety of Audi models. However, I believe there will be other manufacturing sites around the world.
Measuring about 4,400mm long by 1,840mm wide by 1,390mm tall, the baby sedan will be built upon VW's MQB platform. The engine lineup is expected to be carried over from the 2013 A3 hatchback. This means a range of TFSI petrol power plants ranging from 1.4-litre to 2.0-litre as well as 1.6-litre and 2.0-litre TDI options. S-Tronic transmission is available as an option on all models.
Note: Photo shows A3 Concept