BOULOGNE-BILLANCOURT, FRANCE - JANUARY 14:  Flags with Renault logo fly in front of French carmaker Renault headquarters on January 14, 2016 in Boulogne-Billancourt, France. Shares in French carmaker Renault dived on the Paris stock exchange after Renault offices in France were raided by fraud investigators as part of a probe into vehicle emissions.  (Photo by Chesnot/Getty Images)