For the fifth straight year, Toyota Motor Corp and Honda Motor Co topped a study of automakers with U.S. plants in supplier relations, helping them get the best parts at the lowest cost. Toyota was the tops in supplier relations, followed closely by Honda. Ford Motor Co (F.N) was a distant third, followed by Nissan Motor Co . General Motors Co (GM.N) and Fiat Chrysler Automobiles NV (FCHA.MI) were tied for last place.