The Primus is a passenger car built by German automaker Adler from 1932 to 1938 in three variants. It featured the same engines as the corresponding Adler Trumpf vehicles. Otto Göckeritz was responsible for the car's design, and it was unveiled at the 1932 Geneva Motor Show. Overall, a total of about 7703 examples were made.
1.5 Litre (1932–1934)
The Adler Primus 1.5 Litre was built from 1932 to 1934, and was offered as a two-door sedan and two-door convertible. It was fitted with a 1504cc four-cylinder four-stroke engine capable of generating 32 (23.5 kW) to 33 bhp (24.2 kW) of output, and can reach speeds up to 90 km/h. The 1.5 Litre weighs between 990 and 1030 kg, measures 4000 mm long, 1500 mm wide, and 1600 mm high, and rides on a wheelbase of 2700 mm.
1.7 Litre (1933–1938)
The Primus 1.7 Litre A made its debut in 1933, and was manufactured until 1936. It was offered as a two-door sedan, four-door sedan, and two-door convertible. The vehicle was fitted with a 1645cc four-cylinder four-stroke engine capable of 38 bhp (28 kW) of output, and can reach speeds up to 95 km/h. It is identical to the 1.5 Litre in mass and size.
A second variant of the 1.7 Litre, the 1.7 Litre E, was produced from 1937 to 1938. There was no longer an option for a four-door sedan or two-door convertible, and the 1.7 Litre E was only sold as a two-door sedan. It features the same engine as the 1.7 Litre A, but can attain speeds up to 100 km/h, despite being slightly larger. It weighs 1030 kg, measures 4225 mm long, 1560 mm wide, and 1600 mm high, and rides on a 2700 mm wheelbase.