The Indian locomotive classWDM-6 is a class ofdiesel–electric locomotive that was developed in 1981 byBanaras Locomotive Works (BLW), Varanasi forIndian Railways. The model name stands forbroad gauge (W), Diesel (D), Mixed traffic (M) engine, 6th generation (6). Only two WDM-6s were built in 1981 and 1982, and were decommissioned atBurdwan (BWN) in 2011.
The WDM-6 was developed to address the need for locomotive to haul commuter and suburban services. They had the same 1350 hp engine and hood superstructure as themetre-gaugeYDM-4s with the underframes of theWDM-2. The two WDM-6s were deemed underpowered and subsequently relegated to shunting and departmental duties, based at the diesel locomotive shed inBurdwan (BWN) since the 1980s. One unit was seen shunting at Liluah Workshop.[when?] By the late 2010s, both locomotives were withdrawn from service, and are earmarked for preservation.