According to the 2011 CarMD® Vehicle Health Index,
Toyota is the no. 1 ranked manufacturer in the U.S., based on a ranking derived from the fewest percentage of “check engine” light-related related problems and lowest average repair cost. Toyota, which includes Toyota and Lexus brands, has the lowest Index rating of 0.67. The lower the rating, the better the overall ranking.
Rounding out the top five vehicle manufacturers of 2011 are No. 2 Hyundai, No. 3 Honda, No. 4 Ford and No. 5 General Motorss