The value of used light commercial vehicles (LCV) rose 0.9% in December following higher demand for four-wheel models, new figures show.
British Car Auctions said average LCV value during the month was £4,067 - up £37 from November, which saw the lowest figure for the year.
The increase was also driven by a 25% fall in the number of vehicles available for auction.
Although the overall LCV performance improved, fleet values went down 2.9% from November. Year-on-year figures for the fleet sector were down 2.5% or £119 - the first fall since June 2009.
Duncan Ward BCA's general manager for commercial vehicles, said: "Market conditions were tough at the end of the year, with a combination of poor stock mix and inclement weather resulting in some price pressure across the board."
But he said buyer activity has picked up since the start of the year, with the heavy snow and travel chaos easing.
Mr Ward added: "January generally brings an uplift in activity, and this is typically sustained until the Easter period - which usually represents a watershed in demand.
"However, the late winter and early spring months could see some significant increases in available volumes, which means average values could come under pressure again."
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