After falling 0.4 percent last month, auction prices were still on the way down during the first week of June.

According to Black Book data, the car segments saw prices fall by $57 last week, larger than the $44 decline seen the week prior.

This is compared to a $33 slide for cars during the same week last year.

Highlighting another sign prices across the board are softening,  Black Book’s Ricky Beggs said, “The similarity between this past week and the time period of one year ago is that in neither period there were no individual (car) segment types with positive week-over-week change.”

In the Black Book editorial director’s latest “Beggs on the Used Car Market” video report, he said the four segments showing the strongest retention among the cars were the entry-level cars, the compact cars, and both the entry midsize and the upper midsize car segments.

Beggs explained these were also the four segments to see the biggest price spikes during tax season earlier this spring.

And for the smaller units, in particular, when highlighting May auction price results last week, Beggs told Auto Remarketing, "The strong compact car prices are a result of the strong spring selling season, where buyers are very focused on this price point for a used vehicle. We anticipate that this segment will see rising depreciation as the year moves forward."

Rounding out the car segments, the upper midsize cars fell by $48 this past week, similar to its $51 drop the week prior.

The truck market continues to see strong price retention, falling only by an average of $9 last week, compared to a decline of $13 two weeks ago.

The truck segment with the biggest price drop this past week was the compact crossovers, which saw a decline of $48.

“This segment continues to adjust downward, now for five consecutive weeks, after an amazing run of retention over the past couple of years,” Beggs said.

The vans, on the other hand, continue to perform well.

For full-size vans, the cargo versions were only down $8 last week, while the passenger wagons were down $5.

Vans performed well during May, as well, as Beggs pointed out last week: "There continues to be healthy demand for cargo vans because of the construction activity and the improving economy. We anticipate this will continue into the near future. Passenger vans are holding their retention right now because this is a category that is in sync as far as supply and demand.”

Other truck segments that are touting strong price retention include the full-size pickup, which saw an increase of $12 last week, and the full-size SUV, which saw prices rise by $23.

To view the latest "Beggs on the Used Car Market" video report, see above.