Corzen announced the launch of Auto Indicators, a service that measures the number of used-cars listed on online Web sites. Corzen measurements show AutoTrader with more than one million used cars listed for sale in the largest 100 U.S. markets. Cars.com is second with 481,000; Yahoo Autos is third with 216,000. The company reports eBay has a 0.5% market share.

Corzen's Auto Indicators also measures online cars listing for individual dealers in each market. In the New York City and Los Angeles metro areas, for instance, more than 2,000 individual dealers are using either one or a combination of the leading online used-car sites. The Auto Indicators service is available online to clients via subscription.

http://www.corzen.com/autos/index.aspx