Despite a sequential price decline of more than 2 percent, ADESA noticed dealers still had to dip into their floor plan well on average of more than $10,000 per vehicle to fill inventory needs.

According to ADESA Analytical Services’ monthly analysis of wholesale used-vehicle prices by vehicle model class, officials found that wholesale used vehicle prices in May averaged $10,440 — down 2.5 percent compared to April, but up 1.1 percent relative to May 2014.

ADESA indicated only full-size vans, mini SUVs and full-size SUVs had month-over-month increases in average prices.

“Average wholesale used-vehicle prices fell significantly in May relative to April, though they remained modestly higher than year-ago levels.  Besides seasonal factors, supply growth put downward pressure on prices,” ADESA chief economist Tom Kontos said in his latest edition of Kontos Kommentary released on Friday.

“Used-vehicle retail sales were a mixed bag in May, as franchised dealers enjoyed an uptick in sales, especially of CPO units, while independent dealers saw year-over-year declines,” Kontos continued.

ADESA also determined average wholesale prices for used vehicles remarketed by manufacturers softened by 0.2 percent month-over-month and by 6.5 percent year-over-year. Analysts pointed out prices for fleet/lease consignors dropped by 3.0 percent sequentially and 3.0 percent annually.

Kontos mentioned dealer consignors in May saw a 2.6-percent price decrease versus April, but enjoyed a 1.8-percent increase relative to May of last year.

Finally, Kontos recapped that a new data series from the National Automobile Dealers Association showed a 3.6-percent year-over-year increase in used-vehicle sales by franchised dealers, but a 1.6-percent decrease for independent dealers.

He added certified pre-owned sales set new highs in May, growing 8.3 percent month-over-month and 12.2 percent year-over-year, according to figures from Autodata Corp. ADESA Analytical Services' data can be found below: