In March 1935 Schneider delivered the first empty hull. On 20 May this hull was finished and sent to Satory for tests. When these had been successfully completed on 24 June, another vehicle, the third of the production series, was sent to the STC ("Section Technique de Cavalerie") for further testing. The Satory vehicle was fitted with a turret and again tested between 3 and 7 August without serious problems. On 9 August however, the STC vehicle failed to climb a 50% slope, even though the other vehicle had done so effortlessly. This would be the beginning of a series of severe delays. The Army demanded that the gear ratio be changed and on 2 September refused to accept the first batch of twelve vehicles. On 19 October the first modified vehicle was finished and the first eleven vehicles were only accepted in January 1936 and the first AMR 35 taken into service on 22 April 1936.