 The first example of the D.XII used a 134 kW (180 hp) Mercedes D.IIIa engine and had balanced, parallel-chord ailerons.The second, built in April 1918, featured unbalanced, inversely tapered ailerons and Bohme undercarriage with pneumatic shock absorbers.Although it was initially fitted with the Mercedes engine, it was later re-engined with a BMW IIIa producing 138 kW (185 hp).