• Best Selling Brands (World)
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• Kelly Blue Book Used Car prices
• CarFax Car History for $20
• Insurance Institute for Highway Safety Crash Tests
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• Jeeps
  

https://www.ebay.com/motors
https://www.truecar.com/#/
AutoTempest.com: The Best Used Car Search.
https://www.cars.com/
See Most popular models at Auto Buying Guides
Misc Auto Categories:
Car Search - Gives A-Z listings of manufacturers, suppliers and distributors. There is also a list of brand names arranged by product with supplier cross-references.

Other:
The most popular new vehicle in each state? | yahoo
USA Auto Sales Brand Rankings - June 2015 YTD - GOOD CAR BAD CAR