As used-vehicle prices fell by 2.2 percent last month from June rates, according to NADA Used Car Guide data, auction volume was on the way down as well.

According to NADA UCG’s latest Guidelines report, auction volume of models up to 8 years old reached nearly 310,000 units in July.

This marked a 6-percent decline from June’s total. The report stated volume was lower across all models years, except for one: 2015, which jumped by 56 percent from June to 27,500 units.

This is perhaps not surprising news to the industry as dealers try to make room for 2016 models set to hit the lots in the coming months.

NADA UCG pointed out that while the number of 2015 model-year vehicles at auction continues to soar, the opposite is true for 2014 models.

For the 2014 years, auction volume dropped by 12 percent last month to 46,000 units, while supply for 2012 and 2013 models fell by an average of 13 percent to 54,000 and 50,000 units, respectively.

Depreciation for 2007 to 2011 models was a bit less dramatic, as these models’ volume fell by a range of 4 percent to 8 percent.

Taking July’s volume drops into account, auction volume year-to-date stands at 2.51 million units, or 7 percent more than last year’s seven-month total, according to the report.

NADA UCG also took a look at late-model vehicles, specifically, or those used vehicles up to 5 years old.

Year-to-date auction volume growth has been driven in part by subcompact cars, which leads the pack with volume up by 58 percent, representing 5 percent of total auction volume. Large cars (6 percent of auction volume) and large pickups (9 percent of auction volume) are also seeing numbers expand, by 39 percent each, to be exact.

“Compact and midsize cars continue to dominate auction volume where share sits at 17 percent and 21 percent, respectively,” Jonathan Banks, executive automotive analyst for NADA UCG, said in the report. “Compact car volume is up 26 percent year-to-date, while midsize car volume is up 5 percent. Compact utility volume is up 7 percent, and overall share stands at 12 percent.”

With this auction volume movement in mind, NADA UCG is predicting wholesale prices will fall by 2.2 percent to 2.7 percent in August, compared to July rates.

“This year’s anticipated rate of depreciation would be marginally better than the nearly 3 percent decline recorded in August 2014, but somewhat steeper than the roughly 2 percent decline averaged in the two years prior,” Banks said.

Following recent trends, subcompact cars are expected to see the most significant depreciation this month, followed by compact and midsize cars.

“Losses for the group should exceed the high end of our overall forecast, while utility, van, and pickup depreciation should be near-to, or below the low-end. Luxury vehicle losses should be similar to those of mainstream cars,” Banks shared.