1909 Established by August Horch on July 16. 1910 Audi Type A, the company's first car, is produced. 1932 The four rings of the Audi badge symbolise the Audi, DKW, Horch and Wanderer brands, which were combined under Auto Union. 1934 The Auto Union's Silver Arrow makes its first appearance on the Avus race track in Berlin; Type A Grand Prix. 1936 The Audi brand concentrates on building high-quality cars in the upmarket midsize category, notably Audi Front 225, which appeared as an elegant two-window cabriolet; Type C represents the most powerful development stage of the Auto Union 16-cylinder racing car. 1949 Auto Union is incorporated as a GmbH (public limited company). 1958 A new venture is initiated with the establishment of the Auto Union GmbH in Ingolstadt. 1969 Auto Union GmbH merges with the Neckarsulm-based company NSU Motorenwerke AG to form Audi NSU Auto Union AG. 1976 Audi launches the five-cylinder engine. 1979 The first turbocharger technology launched by Audi. 1980 Quattro four-wheel drive unveiled at the Geneva Motor Show, marking the first mass production of cars, which were equipped with four-wheel drive. The eye-catching Audi Quattro coupe won its first rally competition in the Constructors World Championship in 1982. 1981 Three wins in World Rally Championship for the Audi Quattro trigger more than 25 triumphant years for Audi Motorsport. 1985 Audi NSU Auto Union AG changes its name to Audi AG - as we know it today. 1989 TDI - Audi engineers invest 13 years of research work into the development of a car diesel engine with direct fuel injection. Audi starts using direct-injection diesel engines in volume production - first using it on the Audi 100 and registering TDI as the trademark of Audi. 1994 Audi introduces ASF (Audi Space Frame), its first 100 per cent recycled aluminium body luxury saloon at the Frankfurt Motor Show in 1993. ASF went into production in 1994 with the launch of the Audi A8. 1998 Audi proudly unveils the Audi TT coupe at the Frankfurt Motor Show. Viewers were especially attracted by the car's original concept which was retained at the production stage. It won many global awards and became the classic model of Audi. 1991 In the brand's - up to now - most successful motor sport season, Audi successfully defends the DTM title. 2001 TFSI-technology first sees action at the 24-hour Le Mans race. 2004 Audi enters the DTM (German Touring Car Masters) and goes on to win the championship three times (2004, 2007 and 2008), making the marque the most successful brand in recent DTM history. 2006 Q7, Audi's first full-size luxury sport utility vehicle (SUV), goes into production after being unveiled at the Los Angeles Auto Show in January. Also that year, the R10 TDI makes a triumphant debut at Le Mans. It was the first time a diesel-powered car competed since the endurance race's inception in 1923. 2007 The R8, Audi's first mid-engine super sport, is produced. 2008 With eight wins from 10 starts at Le Mans - Audi shows what 'Vorsprung durch Technik' can do. Audi also sets a world record with sales reaching more than a million vehicles for the 13th consecutive record-breaking year. 2009 Audi R15 TDI celebrates its Le Mans debut, and the diesel sports car is victorious at the Sebring 12 Hour race (America) in March. 2009: Audi enjoys centenary on July 16.