GM and Ford models top most segments: "Eight different models from General Motors earned the top score in their individual categories, while Lexus earned the top brand ranking in the J.D. Power and Associates 2005 Vehicle Dependability Study (VDS). The Vehicle Dependability Study measures problem symptoms experienced by original owners of three-year-old vehicles (2002 models). The vehicles are scored based on the number of problems per 100 vehicles (PP100)." I was skeptical of J.D. Power's 90 day Initial Quality Survey for powertrains in this post; this three year survey carries much more significance in my opinion.