Audi world, some of which are shared with other VW Group marques although many sub-assemblies such as engines and transmissions are manufactured within other Volkswagen Group plants. Audi's two principal assembly plants are: Outside of Germany, Audi produces vehicles at: In September 2012, Audi announced the construction of its first North American manufacturing plant in Puebla, Mexico. This plant is expected to be operative in 2016 and produce the second generation Q5. From 2002 up to 2003, Audi headed the Audi Brand Group, a subdivision of the Volkswagen Group's Automotive Division consisting of Audi, Lamborghini and SEAT, that was focused on
Audi 50 until 1978, but the cheaper Volkswagen Polo outsold the Audi 50, and Audi discontinued the Audi 50 in 1978, after a total production of 180,812 units. A planned facelift, which would have given the Audi 50 a look closer to that of the Audi 100 and Audi 80 was never implemented, because of a holding company board decision that the Audi brand should concentrate on larger, more expensive cars. The Volkswagen Polo range continued to evolve, with the Volkswagen Derby notchback version, despite being developed by Audi at Ingolstadt, branded as a Volkswagen and launched in 1977. Subsequently, the Volkswagen