On the main best-seller listing, full-size pickups nearly always dominate. Then midsize sedans, and the occasional economy car or compact SUV.
But how do cars do throughout the market as they duke it out with their competitors?
See September 2010's best-selling vehicle in each approximate market position below, and click through the slideshow on the right to see the top-10 best-sellers in each of the classes.
Subcompact cars: Nissan Versa
Compact cars: Toyota Corolla
Midsize cars: Toyota Camry
Large cars: Chevrolet Impala
Entry-luxury cars: BMW 3-Series
Luxury cars: Mercedes-Benz E-Class
Compact SUVs: Honda CR-V
Midsize SUVs: Ford Edge
Large SUVs: Chevrolet Traverse
Entry-luxury SUVs: Lexus RX
Luxury SUVs: Mercedes-Benz GL
Vans: Chrysler Town & Country
Pickups: Ford F-Series
