Though many expect used prices to drop as off-lease supply expands in the auctions lanes this year, used-car prices were still on the way up in December.

The most recent Market Update from RVI Group shows that the company’s Used Vehicle Price Index jumped up by 0.7 percent in December when compared to November prices. That said, year-over-year, the index was down by 3.2 percent.

This used market movement occurred while new-vehicle prices fell by just 0.1 percent in December on a monthly basis.

RVI reported there were some small changes in residual values in December, but nothing too significant.

The midsize sedans and SUVs saw the biggest jump in residuals in December. The midsize sedans saw residuals spike by 2 percent from November, while the mid-size SUVs were up by 1.7 percent.

Luxury coupes and full-size sedans took the biggest hits in terms of residuals during the last month of the year. Luxury coupe residuals dropped by 2.2 percent from November, while full-size sedans declined by 1.5 percent.

Lastly, when looking at predictions for future residuals, keep in mind the dropping price of oil. Gas prices dropped in December to an average of $2.14 a gallon, according to the report, which was down 5 percent from November and down 19 percent year-over-year.