At the end of 1930, Renault ended production of its last "coalscuttle"-bonneted (with the radiator behind the engine) commercial vehicles, adopting more vertical grilles and, in some models, vertical slits on both sides of the engine compartment, as the radiator was moved ahead.
[9] For the 1933 models, there were some changes compared to the ones for 1932: a new light vehicle called YP (0.75 tonnes payload), a new KZ chassis more focused on commercial use, the discontinuation of the TS.
[10] For 1934, Renault removed the SX, replacing it with the ZY (ZYAC, inline-four petrol, 2.5 tonnes payload) and started to phase out the PR, exchanging it for most uses with a new 2-tonne chassis, the ZJ, which was subject to less taxes and restrictions.
[11] The French military commissioned various vehicles from Renault's commercial range, including the UD, the YF, the TI, and the PR.
At the 1934 Paris Salon, the company unveiled two forward control units for 1935: the ABF (5-tonne payload truck), the ZP (a coach),[13][14] and announced a third, the ABG tractor unit (hauling capacity of up to 10 tonnes), which was unveiled at the Brussels Salon of that year.
[6] For 1935 Renault also retired its last flathead petrol engines from the commercial range and gave minor updates to the diesel ones.
[14] In practice, all the early 1930s commercial vehicles up to 3.5 tonnes payload were discontinued during the 1935–1936 period, its boxy styling replaced with the more curvy Renault ACx and ADx range.
[1] Most normal-control commercial vehicles over 3.5 tonnes payload were also discontinued, the exception being the UD, which subsisted on the lineup until 1937.
[10][note 3] The Renault's commercial vehicle range for 1935 has about twenty three different chassis configurations, with a gross combined weight rating of up 20 tonnes.