Average LCV auction values slipped by £65 in September, according to BCA.
The auction house attributed the dip to a change of model mix which saw volumes of cheaper part-exchange vehicles increase by 25 per cent over the month.
BCA said the fall came despite a competitive marketplace that saw increased demand outstripping available supply and high levels of trading activity throughout the month.
Overall average values fell by 1.5 per cent from £4,211 in August, to £4,146 in September. Performance against Cap improved, however, to just under 100 per cent.
"As expected, professional buyers remained very active in September and competition for the best, ready-to-retail stock has been high," said Duncan Ward BCA's general manager of commercial vehicles.
"Supplies of direct entered fleet and lease vans remain constrained, due to longer retention periods and extended contract cycles, although the short fall was largely plugged by increased volumes from P/X sources - the latter suggesting retail business has been adequate during September. While a decent combination of condition, colour and specification is usually enough to stimulate interest even at a higher mileage, obvious damage is a big turn off."
