Fleet and lease cars averaged £9,673 in February, a rise of £195 (2.0%) compared to January and the highest monthly value on record, BCA's latest Pulse report shows.
Average age and mileage were broadly static over the month, while retained value against original MRP (Manufacturers Retail Price) improved by a point to 42.26%.
Average values were up by £482 (5.2%) compared to February 2014 with a near half point rise in performance against CAP Clean.
The Pulse report shows that the headline average value of a used car sold at BCA fell for the third month running in February, although values remain substantially ahead year-on-year.
The headline average value of a used car in February fell to £7,814, down by £141 (1.7%) compared to January, with performance against CAP Clean improving to 99.08%.
Year-on-year, values were up by £484, a 6.6% rise with both average mileage and age falling slightly compared to 2014. Performance against CAP Clean was up slightly over the year.
Simon Henstock, BCA’s UK operations director, said: “Levels of trade were steady during February, with plenty of interest in retail ready cars, but buyers were rather more wary of poorer condition vehicles.
"With a greater volume of stock expected to reach the marketplace in 2015, buyers have a lot more choice and vehicles requiring repair and refurbishment need to be sensibly valued to compete.
"For cars with cosmetic damage, smartrepairs are a cost effective option for sellers, meaning their vehicles can be quickly processed and presented in the best possible condition.”
He added: “Looking ahead, most commentators are expecting a strong March for new car sales and, as every new car sale typically generates a chain of used car activity, there will be greater volumes from fleet and contract hire sources as well as increasing numbers of dealer part-exchange vehicles.
"This could impact on residual values in the weeks ahead and BCA is recommending that volume vendors appraise their sale stock closely to ensure it is valued in line with market expectations.”