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 Navigation Plus Audi Navigation Plus Audi Navigation Plus is an in-car media and navigation system developed by Audi. Unlike the Audi Multi Media Interface, it can not control climate, convenience, suspension or engine settings. Audi Navigation Plus units were available mostly as an optional equipment instead of standard stereo systems. Audi labeled three devices (of which the first two look identical) as Navigation Plus. Those units are technically known as RNS-C/RNS-D and RNS-E, where RNS stands for "Radio Navigation System". The RNS-C and RNS-D devices look identical and are very similar to Volkswagen MFD installed in some Volkswagen, Skoda, SEAT and Ford