At the age of 15, Montier – with his father Elie and friend Gillet – built his first car, the Montier & Gillet, a steam-powered wagonette steered by a tiller. The sole example was exhibited in Paris in 1897. Montier entered the automotive industry, working for Darracq among others, later going into business as Charles Montier et Cie, selling and modifying Fords first in Tours in 1911 and then Paris, as one of the two Ford agents in France.
An experienced racer and hillclimber, Montier entered the Grand Prix d' Endurance de 24 Heures, also known as the 1923 24 Hours of Le Mans, alongside Albert Ouriou. This was the first running of Le Mans, which was to become one of the most prestigious motor races in the world. The Ford Model T was a mass-produced, mass-market vehicle – in the words of Henry Ford, "a motor car for the great multitude... so low in price that no man making a good salary will be unable to own one"; 1.8 million were sold in 1923 alone. Montier added two rear seats to the Model T – hanging over the back of the rear axle – to comply with the Automobile Club de l'Ouest's regulations; he also modified the cylinder head, camshaft, brakes, and gearbox to make his Montier Special. The “dainty” Montier-Ford has since been called “perhaps the best Model T-based speedster ever created from the pedestrian farmer's fliver” (https://en.wikipedia.org/wiki/Charles_Montier). Thirty-three cars started the race; Montier and Ouriou finished in 14th place.
Montier returned to Le Mans in 1924 with his modified Ford special, now fitted with 4-wheel brakes, again with Albert Ouriou. The Montier Special was last away as it proved difficult to start. The car retired on lap 40 with engine problems. The duo's third and final attempt at Le Mans, in 1925, was also unsuccessful as they were unclassified due to only completing 54 of the 117 laps required.
Alongside the Le Mans entries, Charles continued hillclimbing; and he and his son Ferdinand raced Montier Specials in the Coupe de la Commission Sportive event, a support race to the 1927 French Grand Prix. The Montiers turned their attention to racing Ford Model A-based Montier Specials in Grand Prix and endurance races at numerous events between 1929 and 1935. The cars had lowered chassis and many engine modifications.
Both men entered – and both failed to finish – the 1929 Dieppe Grand Prix. Montier Senior finished 6th in the 1930 Belgian Grand Prix (a Grandes Épreuves event), but was not classified in the 1930 French Grand Prix and retired from the 1930 San Sebastián Grand Prix. Championship races in the 1931 Grand Prix season were endurance races of 10 hours duration with 2 drivers assigned to each car. Montier entered the 1931 Belgian Grand Prix championship event with co-driver “Ducolombier”, finishing 8th, 30 laps down. Montier also ran in two non-championship rounds that year: the 1931 Casablanca Grand Prix, which he did not finish, and the 1931 Dieppe Grand Prix where he finished 10th.
Montier entered only one Grand Prix as a driver in the 1932 season, the 1932 Picardy Grand Prix where he finished 9th. A Montier Special with Ferdinand at the wheel turned up at the 1932 La Baule Grand Prix; the car on this occasion sported two engines “mounted in tandem for a total of 4072cc capacity” instead of the Ford Model A-derived 3.3L straight 4 used hitherto. No Grand Prix entries as a driver are recorded for Charles Montier in 1933, but Ferdinand entered the 1933 Dieppe Grand Prix in a Ford V8-powered Montier Special.
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. 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. 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 whether Montier was driving the twin-engine car or the V8. Charles Montier's final grand prix was the 1935 Lorraine Grand Prix, where he placed 10th of the 16 entrants and 12 finishers.
Chris Martin authored Charles Montier and his French Racing Fords (2022) and Charles Montier Sorcier de la Ford T (2022). RM Clarke’s Le Mans. The Bentley & Alfa Years 1923-1939 (1999) provides context for Montier’s early racing career.