Audi won the World Rally Championship manufacturers’ title 2 times.
Audi’s two manufacturers’ championships came in 1982 and 1984, during the spectacular Group B era. Both titles were secured with the four-wheel-drive Audi Quattro, a car that transformed rallying by showing how all-wheel drive could provide a decisive advantage on loose and slippery surfaces.
The 1982 title was Audi’s first, achieved against strong opposition from Opel and other established rally teams. Audi returned to the top in 1984, when the Quattro A2 and Sport Quattro machinery helped the team dominate much of the season. Audi also won drivers’ championships in 1983 and 1984, but those are separate from the manufacturers’ tally.
The most common mistake is counting Audi’s drivers’ titles, rally victories or championships in other series. The question asks specifically for the WRC manufacturers’ championship, and Audi’s official total in that category is two.