NSU Motorenwerke AG was a German automotive manufacturer founded in 1873, originally producing sewing machines and later transitioning to motorcycles and automobiles. The company became known for its innovative engineering and was one of the first to mass-produce vehicles in Germany. In the 1950s and 1960s, NSU gained popularity with models like the NSU Prinz and the NSU Ro80, which featured a unique rotary engine. However, financial difficulties led to its merger with Volkswagen in 1969, marking the end of NSU as an independent brand. Today, NSU is remembered for its contributions to automotive history.