the land speed record at Arpajon in this car, at a speed of , in 1924. A 1925 car had a () six, again using the GL block, with four valves per cylinder and twin overhead cams. Driven by Divo, it broke the Mont Ventoux course record in its debut. The car was destroyed by fire at the Phoenix Park meet in 1934. The 1924 and 1925 DIS, with a wheelbase, switched from Rolls-Royce-type locking wheel hubs to Rudge knock-ons, better cam, and bigger valves, while the 1925 and 1926 DISS on the same wheelbase. Some of the DISes were bodied by Kelsch. The DIS became the Series 6 in 1927, switching to coil ignition and water pump. In 1926, Delage introduced the DM, with a () six, which made it emblematic of the era for the marque. The high-performance DMS had hotter cam, twin valve springs, and other improvements. A DR, with a choice of 2.2- and 2.5-liter sidevalve engines, also briefly appeared. Competition Delage entered the 1911 Coupe de l'Auto at Boulogne with a () four with two -diameter bellcrank-operated valves per cylinder controlled by camshafts in the crankcase. The five-speed gearbox gave a top speed of , and the four voiturettes each carried , as the factory planned for a no-stop race. Works driver Paul Bablot won, at an average , with a 1m 11s over Boillot's Peugeot, followed home by Thomas in a second Delage; Delage also took the team prize. Delage moved up to Grand Prix racing in 1912, with a Léon Michelat-designed car powered by a four-valve () four-cylinder of , coupled again to a five-speed gearbox and fitted this time with . Three cars were built for the Amiens Grand Prix, though only two, Bablot's and Guyot's, actually entered. On the day, Bablot's Delage proved the fastest car in the field, turning in a lap at , but Guyot fell out of the lead with a puncture, and the race went to Peugeot, while the Delages were fourth and fifth. At the French Grand Prix, Delage put Bablot first, Guyot second, ahead of Pilette's 1908 Mercedes GP car, Salzer in a Mercedes, with Duray coming in fifth in the third Delage. In 1913, the new type Y set the fastest lap time at the French Grand Prix at Le Mans, and in 1914, this same car won the 1914 Indianapolis 500 with René