Montagny tested positive for a cocaine derivative (Benzoylecgonine) after the 2014 Putrajaya ePrix. Montagny was disqualified from the race but kept his championship points and podium finish from the previous race. The 37-year old was banned from motorsport for two years after a second test also proved positive. The Frenchman publicly feared that the ban would be the effective end to his racing career. His ban was lifted on 23 December 2016 but he has not competed since.