A.J. Allmendinger Net Worth: A.J. Allmendinger is an American stock car and open-wheel racing driver who has a net worth of $18 million. Born Anthony James Allmendinger in Los Gatos, California, in 1981, A.J. Allmendinger made his NASCAR Nationwide Series debut in the 2007 Camping World 300 in his home state. He recorded his first win at the 2013 Johnsonville Sausage 200, which he followed up w...