Reiter Engineering first competed in sports car racing in 2000, entering a custom Lamborghini Diablo, modified from the spec used in the Lamborghini Supertrophy one-make series, to compete in the FIA GT Championship series. This car would be the first of many race cars across several years of competition built by Reiter Engineering.
The modified Diablo GTR that Reiter Engineering had developed would debut in the series in 2000. Their participation was short lived that year, however Reiter would score their first points with the Diablo the following year in 2001. This would be the only points scoring finish for the Diablo, as it would be replaced by Reiter's newer Murciélago R-GT based on the first generation Lamborghini Murciélago at the end of 2003.
This new car would earn points on its debut in 2004, with a third place at Valencia. The following year, Reiter managed another point at its home race in Oschersleben. Reiter managed to score sponsorship funding in 2006, leading to the team name being changed to B-Racing RS-Line Team early in the season and the ability to run two cars, before changing to become All-Inkl.com Racing halfway through the year. The team managed three points-scoring finishes, with a best result of sixth in Brno. 2007 saw Reiter's greatest success as the team opened the year with their first victory, drivers Christophe Bouchut and Stefan Mücke winning in Zhuhai. The two-car team managed to score points in six out of ten races that season, allowing the All-Inkl.com Racing squad to earn seventh in the Teams' Championship and Reiter Engineering tying for ninth.