The vehicle was based on the earlier half-track samochód pancerny wz. 28, which entered service in 1928. The original vehicle proved to be unpopular with its crews who were unhappy with its handling, low maximum speed, as well as poor cross-country capabilities, and it was decided to rebuild it as a wheeled vehicle. The tracks were replaced by the rear axle from Fiat trucks.

The cars were built in a number of versions with different engines and slightly different armored plates. They were armed with either 7.92 mm Ckm wz. 25 Hotchkiss machine gun or the short-barreled 37 mm Puteaux SA 18 gun. Production ended in 1938.