Ar 68V1 Prototype, powered by a 492 kW (660 hp) BMW VI engine. First flight in 1933.
Ar 68a First prototype.
Ar 68b Second prototype.
Ar 68c Third prototype.
Ar 68d Fourth prototype.
Ar 68 V4 The fourth prototype (Ar 68d) re-designated after the RLM(Reichs Luftfahrtministerium) introduced the standardised Versuchs (research) number system.
Ar 68e Fifth prototype.
Ar 68 V5 The fourth prototype (Ar 68e) re-designated after the RLM introduced the standardised Versuchs (research) number system.
Ar 68E First type to enter Luftwaffe service, powered by a 455 kW (610 hp) Junkers Jumo 210.
Ar 68F Interim production, powered by a 500 kW (670 hp) BMW VI, awaiting supply of Jumo 210 engines.Ar 68F1
Ar 68G Abortive attempt to fit a supercharged BMW VI (500 kW+/670 hp+).
Ar 68H Only a single prototype was built, powered by a 634 kW (850 hp) supercharged BMW 132Da nine-cylinder air-cooled radial. It was also the first Arado fighter to have an enclosed cockpit.
Spain Spanish Air Force