In 2017, General Motors, the largest U.S. automaker, with brands like Chevrolet, Cadillac, and Buick made one of its boldest moves in its history. It sold its European Opel and Vauxhall brand to the French automaker PSA, known for brands such as Peugeot and Citroen. It was the end of an era for GM, which had first ventured into Europe nearly 90 years before. GM left Europe after 20 years of losses, but why did the largest U.S. automaker leave such a big market? Did it simply fail?