Audi developed their S-Class & 7-series competitor from the venerable typ44 Audi 200, installing a brand new V8 engine driving all four wheels - the first time quattro was used in conjunction with an automatic transmission.
en.wikipedia.org/wiki/Audi_V8 made between october 1988 and november 1993, there was also a 4.2 litre version available from august '91 which had 206kw and did 0-100 in 7.7 seconds auto and 6.8 seconds in the 6 speed manual.