In 1980, Audi Sport, Audi's new factory team, called Mouton and signed her for a World Rally Championship programme for the 1981 season. Mouton described Audi's call as "a complete shock". Audi's decision to nominate her instead of established male rivals attracted a great deal of publicity. As the Audi Quattro, the first rally car to have over 300 bhp and both a turbocharger and four-wheel-drive, had not yet gained FIA homologation, Audi could only enter rallies as zero cars and not as competitive entries. Hannu Mikkola debuted the car in the Algarve Rally in October, and would have won by about thirty minutes had his times been officially registered. Mouton joined Freddy Kottulinsky for the final round of the Finnish Rally Championship, the Northern Lights, and also showed encouraging pace on the slippery surfaces. Mouton initially found the car understeering, but became more comfortable after switching to left-foot braking, as advised by Mikkola who was in charge of developing the car. Audi announced their participation in eight events in 1981, although Mouton would not be entered in the Swedish Rally due to her lack of experience on driving on ice and snow.