The 75th 24 Hours of Le Mans (French: 75e 24 Heures du Mans) was a 24-hour automobile endurance race for Le Mans Prototype and Grand Touring cars, which took place at the Circuit de la Sarthe, near Le Mans, France, from 16 to 17 June 2007. It was the 75th edition of the event, as organised by the automotive group, the Automobile Club de l'Ouest (ACO) since 1923. Unlike other events, it was not a part of any endurance motor racing championship. A test day was held two weeks prior to the race on 3 June. The event was attended by 250,952 spectators. The LMP1 class saw the first competition between the new diesel engined Peugeot 908 HDi FAP prototype and the diesel Audi R10 TDI, the Le Mans winner; the Audi once again achieved an overall victory. There was heavy attrition in the LMP2 class, in which only two competitors finished the race. In the GT1 class, Aston Martin achieved its first win over the Corvette since returning to the event in . The GT2 class was a battle between Ferrari and Porsche, won by Porsche. Background The dates for the 2007 24 Hours of Le Mans were confirmed by the Automobile Club de l'Ouest (ACO) in September 2006. It was the 75th edition of the race and occurred at the Circuit de la Sarthe road racing track close to Le Mans, France, from 16 to 17 June 2007. The race was first held in 1923 after the automotive journalist Charles Faroux, the Automobile Club de l'Ouest (ACO) general secretary Georges Durand and the industrialist Emile Coquile agreed to hold a test of vehicle reliability and durability. It is considered the world's most prestigious sports car race and is part of the Triple Crown of Motorsport. Track changes Between the and 2007 races, the Circuit de la Sarthe was upgraded, most obviously by the reprofiling of the Tertre Rouge corner. The new corner was moved inward, to create a long flowing curve instead of the single point apex it had been previously, shortening the lap distance by 21 meters to a revised 13.629 km. Nine new garages were built at the end of the pit lane, replacing the four temporary garages that had been built a few years earlier. The additional garages allowed the ACO to increase the number of entries it could grant from 50 to 55. The