His greatest success came in the 1980s as a driver for Ford.
Niedzwiedz rose to prominence when driving a Ford Capri for Zakspeed in the Deutsche Rennsport Meisterschaft. The turbocharged 1.4 L engine from the Zakspeed Ford Capri was later enlarged for the 1.7 L "Super Capri". With this 500+ hp car, Niedzwiedz established in 1982 the "eternal lap record" for Group 5 touring car racing at the old 22.8 km Nürburgring with 7:08.59, just 10 seconds slower than the F1 record of 6:58.60 set by Niki Lauda in 1975 (see: Nürburgring lap times).
During the 1982 season, Niedzwiedz also drove in the World Endurance Championship for Zakspeed, in a Ford C100. The Zakspeed-prepared Group C machine was run by the works Ford Germany team with Klaus Ludwig, Manfred Winkelhock and Marc Surer at the wheel, but the car was a midfielder at best, although Jonathan Palmer and Desiré Wilson scored a 4th place overall the 1,000 km of Brands Hatch in 1982. Ford Germany retracted their support and one car was sold to privateers, while the other chassis was evolved by Zakspeed into the C1/4 and the C1/8, making few appearances in international racing, but becoming a front-runner in the German Interserie, where it won the European championship in 1984 with Klaus Niedzwiedz.
In 1982 and 1987, he was the winner at the 24 Hours Nürburgring, in both events with Klaus Ludwig. With a Ford Sierra he was runner-up in the World Touring Car Championship of 1987 and the Deutsche Tourenwagen Meisterschaft of 1989.
Between 1987 and 1996 Niedzwiedz drove six times in the annual Bathurst 1000 race in Australia driving turbocharged Ford Sierra RS500's in all but the his last race where he drove a V8 Ford EB Falcon. Apart from 1987 when he drove for Eggenberger Motorsport as part of the WTCC, he drove exclusively for Allan Moffat Racing (though the Moffat Sierra's were built by and engineered at Bathurst by none other than Ruedi Eggenberger himself). While he never won the race, he came close with two 2nd placings. His results were 2nd before disqualification in 1987, DNF in 1988 (retiring while leading by over a lap), officially 2nd in 1989 teamed with Frank Biela, 10th in 1990 (after claiming pole on the 6.213 km Mount Panorama Circuit with a time of 2:13.94, some 1.23 seconds faster than Dick Johnson who qualified his Sierra in second), 19th in 1992, and 10th again in his last race on the mountain in 1996 teamed with local Series Production driver Ken Douglas. Despite never winning on The Mountain, Niedzwiedz is generally regarded as one of the better European drivers to have raced at Bathurst, and while initially unpopular with the Australian crowd who saw the Europeans as mercenaries who were trying to take their race (indeed, the Eggenberger drivers, Niedzwiedz and co-driver Ludwig, and provisional winners Steve Soper and Pierre Dieudonné, were loudly booed on the Bathurst podium in 1987), he eventually won most of them over by coming back year after year with a smile, and through his talented driving.
Niedwiedz ran in two other races in Australia during his career. The 1987 Bob Jane T-Marts 500, which was run a week after the 1987 Bathurst race and was a round of the WTCC. Neidzwiedz and Klaus Ludwig again qualified on pole (Ludwig) as they had at Bathurst, but finished 12th after a troubled run (team mates Steve Soper and Pierre Dieudonné won the race). He also drove for Allan Moffat at the 1990 Sandown 500. On his first look at the 3.1 km Sandown Raceway, Niedzwiedz qualified the Sierra in 5th place before a broken axle on lap 111 of the 161 lap race saw him and Gregg Hansford fail to finish.
- bio at n-tv
- Klaus Niedzwiedz at the Internet Movie Database (for his appearance in Treibstoff)
- Zakspeed Website
- Profile of the highly successful Zakspeed-built Group 5 racing Capri