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 80 including full-length "Audi Sport" stripes. In the U.S., a special commemorative-edition version, the Audi 4000CS quattro, was made for the 1985, 1986, and 1987 model years. Mid-1984, for the 1985 model year, Audi gave the B2 a subtle facelift with tail lights resembling the ones of the "Typ" 44 Audi 100, and different front and rear bumpers and headlights and an updated interior. In Europe, engines with catalytic converter emissions controls were made available for the first time. The 1.6- and 1.8-litre engines were replaced by newer iterations of the same, enabling the fitment of catalytic converters. The B2 platform