Montier entered the Belgian Grand Prix for the third and last time in 1934, at the age of 55. This race was a Grandes Épreuves because there was again no championship awarded in that year. Seven cars qualified, but only five completed the race; Montier came home 5th in his Ford V8-powered Special. The race was won by René Dreyfus in his Bugatti Type 59 – the last Grandes Épreuves victory for the famous marque. Montier also entered the 1934 U.M.F. Grand Prix. The rainy 1935 Grand Prix at the Orléans Circuit was stopped on lap 7 due to an accident involving Marcel Buffy's Bugatti Type 51; Buffy's car crashed into the crowd, hitting 12 spectators and fatally wounding one of them. Montier, one lap down, was classified 3rd. It is unclear from contemporary reports, but researcher Leif Snellman believes Montier may have been driving the twin-engine car but it may have been the V8. Charles Montier's final grand prix was the 1935 Lorraine Grand Prix. This may have been in the V8-powered car. Montier placed 10th of the 16 entrants and 12 finishers.