Hemmings determines classic car values by working with Hagerty Insurance Company and the Hagerty Price Guide. It also uses asking prices and data from dealer sales, person-to-person sales and auction sales. Hemmings analyzes vehicles manufactured after World War II to provide current pricing information to sellers and buyers.
The Hemmings valuations use data from tens of thousands of vehicle transactions annually.
In 1954, Ernest Hemmings founded Hemmings Motor News in Quincy, Illinois. As of 2015, Hemmings has over 175,000 subscribers to its premier publication. The company headquarters is in Bennington, Vermont. It features a car lover's store and publishes print and online materials, including calendars, a blog and a free email newsletter.