The used-vehicle market weakened in January, as 2008-'12 model-year vehicles depreciated 1.9 percent compared to the 1.4 percent depreciation in December, according to Black Book's monthly reporting.

The January data brought the used-market to the higher end of pre-recession depreciation that averaged from 1 percent to 2 percent per month.

Compact pickup trucks and prestige luxury cars led all Black Book vehicle categories; each gained 0.7 percent in retention value. Examples of compact pickups include the Nissan Frontier, Mazda Pickup, Ford Ranger, and Toyota Tacoma.

All other vehicle categories fell. The sharpest declines came among cargo minivans, full-size SUVs and passenger cars. Cargo minivans fell 4 percent, while the full-size SUV category fell 3.4 percent from December. The entry mid-size and upper mid-size car categories each fell 2.6 percent.

For more information, visit the Black Book website.