For the first time in 23 years, Ford ‘mustang muscle car lost the sports car to General Motor Co.’s Chevy Camaro.

The Camaro in 2010 outsold the Mustang 81,299 to 73,716. The two models have been battling for sports-car sales supremacy since the redesigned Camaro returned to the market in 2009 after a seven-year hiatus. Mustang had been the U.S. leader since 1986, according to Ward’s AutoInfoBank of Southfield, Michigan. The rivalry dates to the 1960s.