Former grand prix driver Lucas di Grassi will join Audi's LMP1 line-up in 2013.
The Brazilian, 28, has been signed to drive one of the German manufacturer's R18 e-tron quattros after a starring performance on his sportscar debut at the Interlagos World Endurance Championship round in September.
Di Grassi takes the place of Marco Bonanomi in Audi's prototype squad, which will include a three-car attack on the Le Mans 24 Hours in June. The Italian has been released by Audi.
Audi Sport boss Wolfgang Ullrich said: "Lucas was really impressive at Interlagos. If you look at what he has achieved up to now, we can consider that he has a big future."
Di Grassi finished third at Interlagos, sharing an R8 ultra with Tom Kristensen and Allan McNish.
"Audi offered me a dream contract, better than anything I had in F1, so I am very happy," said di Grassi. "This job is only due to my performance; there is none of the F1 commercial mess."
The extent of di Grassi's programme in 2013 has yet to be revealed. Audi said that it would announce at a later date the driver line-ups in each of its cars and which drivers will be chosen for its expected two-car WEC line-up.
Marc Gene, who joined Audi in place of the injured Timo Bernhard for the Spa 6 Hours and then Le Mans, remains with Audi for 2013.
The nine-strong prototype squad is completed by Andre Lotterer, Benoit Treluyer, Marcel Fassler, Tom Kristensen, Allan McNish, Loic Duval and Oliver Jarvis.