It has taken on Vauxhall Corsa Dualfuels for its fire safety officers responsible for identifying fire risks in urban areas.
Part of its 144-vehicle fleet now includes six LPG-powered 1.2-litre Corsas and the brigade expects to take on a further 10 in its next budgeting year.
Fleet engineer Paul Beard said sourcing the green alternative fuel should not be an issue for the brigade's staff.
'Our nearest LPG garage is at the bottom of the M32 in the middle of Bristol, about one mile away from our base, and the area is generally well served.
'Although we don't have congestion charging in Bristol just yet, recent reports have suggested that it will be introduced in the next two years, which would be another benefit of operating the LPG Corsas.'