In 1982, a successful relationship with Tom Walkinshaw's TWR team commenced with the XJ-S competing in the European Touring Car Championship, which it won in 1984. In 1985, the TWR XJ-S won the Bathurst 1000 race. In the mid-1980s TWR started designing and preparing Jaguar V12-engined Group C cars for World Sports Prototype Championship races. The team started winning regularly from 1987, and won Le Mans in 1988 and 1990 with the XJR series sports cars. The Jaguar XJR-14 was the last of the XJRs to win, taking the 1991 World Sportscar Championship.