[1] In late 1932, Straussler signed an agreement with the Manfréd Weiss corporation to build a light tank prototype based on the agricultural and mountain tractor he developed earlier (V-1 and V-2).

[2] The general staff was satisfied with the results of the tests of the V-4 in 1937, though the high silhouette, making the vehicle unstable, and the poorly angled armor layout was discommended.

[11] Another trial was held for the V-4 in June 1938, during which it was again compared to the L-60, but it ended in rejection of the now 12-ton tank, with the main reason being the unreliableness and poor mobility.

Italian experts however found it unsuitable for use in mountain terrain, so they decided to not purchase a license for production.The further fate of the first V-4 prototype isn't clear, though it was likely returned to Hungary in 1942.

[12] Soviet Union: The Straussler Light Tank, Type D, Type R, and a fourth design referred to as PV-T were all transported from Britain to be tested by the USSR, but were eventually rejected as the main reason of the Soviet Union's interest was to inspect and study western technology.

[2] Poland: In 1937, Straussler designed a prototype similar to the Type R for an order from the Polish Army, equipped with two 90 hp engines, but it seemed unreliable and was sent back to Alvis-Straussler.