Popular models of the 1920s, were 2298cc, 1550cc and 4700cc four-cylinder and 2580cc six- cylinder cars. Gropius and Neuss coachwork was seen on many models, built between 1927 and 1934. They had 2916cc six- cylinder and 3887cc eight-cylinder engines. The front-wheel- drive Trumpf models of the 1930s with 995cc (Trumpf Junior), 1494cc and 1645cc four-cylinder engines, gained many successes in races, including the Le Mans 24 hours.
Among rear-driven Adler cars were the 1943cc “Favorit”, the 2916cc six-cylinder “Diplomat” and the 1910cc four-cylinder and 2494cc six-cylinder models with partially streamlined bodywork built until the Second World War. Adler only built motorcycles after World War Two.
