Cars.com
This is a complete car sales site. Build your own car and get an online quote,look up trade-in and retail values, compare prices for new cars, get reviews and information on car insurance - these are just a few features.
Kelley Blue Book
Find the retail or trade-in value for your car or an auto you are thinking of buying. Motorcycles are listed as well. This is the online version of Kelley Blue Book.
Car and Driver
Published by the magazine Car and Driver, this site reviews autos, has a Buyers'Guide, provides the latest news on cars, offers free price quotes and a place to post your opinions.
Carfax
Find a car, a dealer, do a title check, check a VIN, get a history report and many other useful features are on Carfax. Some are free and others are available for a fee.
Insurance Institute for Highway Safety
Developed by car insurance agencies, this site allows consumers to "enter a manufacturer and model and search for safety issues."
National Highway Traffic Safety Administration
Look not only for automobile safety issues here, but, also government regulation and standards, test results and the latest research and development in the field.
Car Design News
A site for international car designers and car enthusiasts. Find the latest news, events, reports, exhibits and lots of photographs.
Petersen Automotive Museum
An automotive museum in Los Angeles that explores the history of the automobile and "its effect on our lives and culture." Great photos.
