"Businesses are always on the lookout for ways to reduce operating costs without compromising service levels, and adding low-emission vehicles to a fleet represents a perfect way to achieve this," says Steve Archer, director of fleet services at Inchcape Fleet Solutions.
"Prior to the market downturn, there was already clear evidence that customers were seeking more fuel-efficient vehicles, but external factors - natural disasters, war, civil unrest and oil prices - have acted as a catalyst, speeding up the process."
adds: "With the focus now firmly placed on whole-life cost and value for money, the industry has never been so attuned to the benefits of sub-100g/km vehicles."
But fleet numbers will grow: "Gradually Inchcape customers are realising just how many benefits are held in sub-100g/km vehicles: they are far cheaper to tax and fuel, resulting in a more attractive whole-life cost," says Archer
"It is not only running costs where carbon-efficient vehicles stand head and shoulders above their competition.
They are also subject to considerable Government allowances (e.g. London congestion charge exemption) that are likely to become more commonplace in the future."
Due to sub-100g/km models' low volumes, auction prices are currently strong.
BCA's Henstock comments: "Used cars in this sector tend to be priced pretty keenly because of the scarcity factor, and this will often outweigh the obvious benefits accruing from reduced motoring costs.
In reality the usual rules apply when it comes to valuation - make and model, desirability, condition, mileage and presentation are the critical issues."
adds: "Lower CO2 cars are performing relatively better than their higher CO2 equivalents in today's market, but the question is, will this still be the case in the future?