Toyota (TM 0.60%) had a great year in the U.S. in 2012, but so far, 2013 has been a different story. Sales of its big leaders, the Camry and Prius, have slipped sharply – thanks to much stiffer competition from a number of key rivals.

Toyota's fighting back, though, determined to help the Camry keep its title as America's best-selling sedan. In this video, Fool.com contributor John Rosevear looks at why Toyota has been slipping in the U.S. sales race – and at what the Japanese giant is doing to fight back.