Vehicle boasts segment-leading forecast average range depreciation of £12,618
Fiesta was the most popular model, selling 20% more than second-placed Focus
Charity's fleet comprises largely of the Peugeot 308, Vauxhall Astra, Vauxhall Insignia, Ford Mondeo, Ford Focus, Toyota Prius and Toyota Auris
New generation 1.6litre CDTi diesel offers CO2 emissions of 94g/km and fuel economy of 78.5mpg
New offering aims to push manufacturer to a million global sales a year, with 100,000 of those in the UK
Ten-strong fleet contain technology that has 'wowed' David Cameron and Theresa May
At the Frankfurt Motor Show, Vauxhall will also display a new six-speed gearbox