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.

1932 to 1945 Adler logo.
1932 to 1945 Adler logo.
1918 to 1932 Adler emblem. (source: Radiator Emblem Collection)
1918 to 1932 Adler emblem. (source: Radiator Emblem Collection)
1971 Adler logo.
1971 Adler logo.
1948 to 1967 Adler emblem.
1948 to 1967 Adler emblem.
Adler Trumpf brochure.
Adler Trumpf brochure.
Adler Stromform 2.5 Litre brochure.
Adler Stromform 2.5 Litre brochure.