Along with its usual analysis of slightly softening wholesale prices and auction conversion rates, Black Book gave a little more attention to the retail side of the car business in its newest installment of Market Insights released on Tuesday.

Black Book said its estimated reading of used retail days to turn remained at roughly 34 days. That’s where it’s been for roughly the past three months. It hasn’t reached 40 days since December.

“On the retail side, used inventory levels continued to rise, but days to turn remained steady and listing prices softened only slightly, suggesting the added supply has not yet translated into meaningful retail pressure,” analysts said in the report.

Turning back to the auction world, Black Book indicated overall wholesale prices softened by 0.31% and the auction conversion rate dropped by another percentage point to 57%.

“Auction activity remained steady, but market performance was mixed. Auction conversion rates finished at 57%, down one percentage point the previous week, reflecting disciplined and selective bidding despite healthy bidder engagement,” Black Book said. “SUVs outperformed passenger cars, while passenger cars experienced more consistent depreciation and trucks posted the steepest weekly declines.

“Clean-condition inventory continued to generate the strongest results, but mileage alone was often insufficient to command stronger pricing. Buyers remained highly selective, favoring vehicles that offered the right combination of condition, equipment, and value while remaining cautious on abundant, commodity-style inventory,” analysts continued.

On a volume-weighted basis, analysts determined overall car prices decreased by 0.13%.

But Black Book pointed out that sporty cars between 8 and 16 years old continue to outperform the car department, posting value gains in 17 of the past 20 weeks.

Also of note among cars, analysts said prices for mid-size cars less than 2 years old increased 0.13% last week after six consecutive weeks of value declines.

Looking closer at volume-weighted truck information, Black Book found that overall values decreased 0.37%.

Prices for full-size crossover/SUVs less than 2 years old experienced an accelerated rate of depreciation last week, declining 0.52%. It’s largest single-week drop since late December, according to Black Book tracking.

With auctions, dealers and the rest of the used-car industry get ready to celebrate the 250th birthday of the United States, Black Book reiterated, “As always, our team of analysts are focused on keeping their eyes on the market for developing trends and gathering insights.”