The company started in 1967 in a small workshop in the Durlach district of Karlsruhe before relocating to a warehouse facility in the Daxlanden district. For its first quarter-century the operation focused on Porsche tuning, restoration, and spare parts, developing deep expertise in historic Porsche models. By the time it entered international motorsport, the company had already built a reputation as a source of rare parts and restored cars — a business it continues alongside any racing activity.
Freisinger began competing internationally in 1992, initially in the Porsche Supercup. The team subsequently expanded into the BPR Global GT Series and entered the 24 Hours of Le Mans. The first significant international result came at the 1998 Petit Le Mans, where Freisinger won the LMGT2 class with a Porsche 911 GT2. From 1999 the team competed in the FIA GT Championship, finishing third in the teams' standings in its first season and recording its first outright FIA GT class victory at EuroSpeedway Lausitz in 2000, ultimately placing fourth in the championship that year.
The team's most successful period came when it moved into the N-GT class of the FIA GT Championship from 2002. That season Freisinger won the N-GT teams' title with seven class victories, including a win at the Spa 24 Hours. The championship was retained in 2003 despite recording only three class wins, with the Spa 24 Hours again among them.
In 2004 the team expanded to a three-car entry and achieved comprehensive dominance of the N-GT class, winning nine of the eleven scheduled races and sweeping the podium in their class at the Spa 24 Hours. This campaign secured a third consecutive N-GT teams' championship and, under the separate scoring system then in use for manufacturer and teams' points, also earned Freisinger second place in the overall teams' standings. The team also competed in the Le Mans Series during 2004 and took two class wins in that championship.
Drivers who raced for Freisinger Motorsport across this period included Romain Dumas, Marc Lieb, and Stéphane Ortelli.
Following the successful 2004 season, the loss of Russian sponsor Yukos removed the financial base for continued international competition. Freisinger elected to withdraw from racing and redirect resources toward the company's tuning and restoration divisions.
The Karlsruhe operation continues as one of the largest independent Porsche specialists in Germany, offering restoration of historic Porsche models using original parts, tuning and performance work, and a parts catalogue described as the world's largest range of Porsche spares. Racing and historic car hire remain part of the business alongside sales of used Porsche road and competition cars.