After holding strong and steady last week, auction prices are expected to begin their usual late spring decline.

This week, NADA Used Car Guide is predicting auction prices to fall by an average of 0.3 percent, or $50.

This will bring the average wholesale price down to a still strong $17,225.

Most weeks so far this spring have seen price hikes across the board among car and struck segments, but this week only two segments are expected to see rises at all.

According to NADA UCG, compact cars and utilities are predicted to see gains of 0.4 and 0.2 percent, respectively.

The biggest losses this week are expected among the larger vehicles.

First up, the largest percentage drop will be the midsize van segment, as prices are expected to fall 0.9 percent, or $150.

The large SUVs will likley follow, falling by 0.7 percent, or $200.

All remaining segments are expected to fall within a tight range of 0.1 percent to 0.5 percent, reported David Paris, automotive analyst at NADA UCG.

This may be the week that turns the tides, as Black Book was still reporting price gains when recording last week’s results.

Last week, both the car and truck segment prices increased again — bringing rate spikes to four straight weeks for the cars and five consecutive weeks for the trucks, according to Black Book.

Almost all truck segments saw price hikes (13 out of the 14 segments Black Book tracks) increased, for an average price rise of $34.

The only segment to decrease last week, according to Black Book data, was the luxury SUVs, which only fell by $2.

 Four- and two-week AuctionNet wholesale average prices are created by collecting all AuctionNet records for vehicles up to five years of age for a specified period of time.  Prices are then adjusted for changes in mileage and mix.

Current week prices are based on NADA's proprietary used-vehicle value model which includes assumptions for new-vehicle prices, used-vehicle supply, gasoline prices, and other economic factors.