Audi 100 three-speed automatic transmission sourced from Volkswagen. The Audi 100 included a rough engine note that was described as unlikely to discourage buyers whose first car had been a Volkswagen and who aspired to drive a diesel powered (pre-turbo) Mercedes-Benz. The Ingolstadt production line was at full capacity, but supply fell short of demand that during the summer of 1970 an additional production line for Audi 100s was set up in Volkswagen's own Wolfsburg plant, which made it the first water-cooled car to be produced in Germany's (and by some criteria the world's) largest car plant. For the Swiss market, the
Audi Pikes Peak quattro the Audi Quattro and the Audi Sport Quattro. The Pikes Peak quattro design was subsequently developed into the production Audi Q7. In the early 1990s, Audi developed a concept car known as the Audi Quattro Spyder. A clear throwback to the successful rally road car of the early 1980s, which was simply called the Audi Quattro, this new concept proved to be a success when first shown at the 1991 Frankfurt Motor Show. Enthusiasts began to call for a production version, provoking Audi engineers and accountants into discussion of whether or not there was a viable business case for such