The final C11 built, chassis 05 was only raced once in 1990, at the Mexico City round of the championship. It was disqualified for 'over-fueling'. In 1991, it was called into service more often. Although it did not win outright, it took class wins at the Suzuka, Monza and Silverstone rounds of the championship. At LeMans, it was piloted by Karl Wendlinger, Michael Schumacher and Fritz Kreutzpointer to a fifth overall. After its retirement, it became one of only very few Mercedes-Benz prototype racing cars ever sold to a privateer. Its new American owner campaigned the car quite extensively until 2004 before having the car restored in 2007.