His health took an unexpected turn for the worse following shoulder surgery, according to a statement released by the company, and he never recovered. Once looked upon as an inexperienced outsider, he displayed monumental talent and superhuman grit as he dedicated 14 years of his life to turning around Fiat and Chrysler and merging them to create the world’s seventh-largest auto-maker.

We’re looking back at his life, career and the moments that made him one of the auto industry’s great leaders.