Motor Trend is an automobile magazine. It first appeared in September 1949, issued by Petersen Publishing Company in Los Angeles, and bearing the tag line The Magazine for a Motoring World. Petersen Publishing was sold to British publisher EMAP in 1998, who sold the former Petersen magazines to Primedia in 2001. As of 2007, it is published by Source Interlink. It has a monthly circulation of over one million readers.