It's no secret that U.S. consumers prefer SUVs and trucks nowadays, and that means car sales are sliding. That's forcing automakers to offer big discounts to sell them. Car sales fell to just 36 percent of U.S. auto sales last month, a record low for a January. Generally, discounts are bigger on cars with the highest inventory.

Here are the top 10 cars with the biggest stockpiles, measured by the number of days the inventory could meet demand at the current sales rate:Brand Vehicle Days' supplyBuick Lacrosse 330Buick Cascada 298Chevrolet Corvette 267Volkswagen CC 259Chevrolet Camaro 236Buick Verano 234Mitsubishi Mirage 231Acura ILX 227Chrysler 200 225Buick Regal 222Source: WardsAuto