FACTBOX: Key facts about U.S. December auto sales

(Reuters) - U.S. auto sales fell 35.5 percent in December from a year earlier, according to data from auto manufacturers on Monday. The following are highlights from the largest carmakers in the U.S. market.

Overall industry

* Total light vehicle sales 896,124 units.

* Seasonally adjusted annualized sales rate 10.32 mln vs 16 mln a year earlier

General Motors Corp

* Light vehicle sales down 31 percent (221,983 units)

* Year-to-date sales down 22.9 percent

* Vehicle inventories at month-end: 872,000, down about 36,000 units from a year earlier

* Cars/trucks: Car sales down 24.9 percent/light truck sales down 34.8 percent

* Key vehicles: Chevrolet Impala up 18.8 percent, Chevrolet Malibu up 42.6 percent, Chevrolet Silverado down 37.8 percent, Chevrolet Tahoe down 43.5 percent, GMC Sierra down 34.4 percent.

* Incentives: average $3,661 per vehicle, up from $3,490 a year earlier.

Toyota Motor Corp

* Vehicle sales down 36.7 percent (141,949 units)

* Year-to-date sales down 15.7 percent

* Cars/trucks: Car sales down 34.8 percent, trucks down 39 percent

* Key vehicles: Tundra down 52.2 percent, Camry down 34.9 percent, Prius down 44.7 percent, Corolla down 22.6 percent