The focus of Technical Development operations at Neckarsulm is on the areas of lightweight body construction, interiors, and petrol and diesel engines. The results achieved by the Lightweight Design Centre Neckarsulm have already led to a tally of patents running into three figures, as well as numerous international awards. Alongside the key material aluminium, the inventors of the Audi Space Frame (ASF) lightweight body construction concept investigate in particular the use of fibre composites. Sports engine development is also based at Neckarsulm. It celebrated its 20th anniversary in 2009.