And the company plans to operate a wholly LPG fleet as its vehicles come up for renewal.
The 1.8-litre LS Vectras from the Dualfuel range, which can operate on both petrol and LPG, will be driven by sales and management staff at the Reading-based firm. Westronics operates a fleet of 50 vehicles, mostly comprising Astravans for installation engineers, with about a dozen cars which are either new Vectras or Astra estates.
The vehicles are funded via contract hire provided by Vauxhall Masterhire on three- year/90,000-mile contracts, while its vans are outright purchased and normally operated for about 100,000 miles before disposal.
Graham Miller, managing director of Westronics, said: 'We plan to change all our vehicles to LPG as they come up for renewal for reasons of economy and tax efficiency for our drivers.
'We see ourselves as an environmentally-aware firm and welcome the cleaner emissions of LPG vehicles.'
Six new Dualfuel Astras and three Astra estates were supplied by Vauxhall dealer Inchcape of Reading.