J.D. Power's annual Vehicle Dependability Study showing the most reliable 3-year-old vehicles — suppose to help when shopping for a good used vehicle. The biggest problem in least reliable is new engines and transmissions accounted for nearly 6 of the 7 additional problems per 100 vehicles in this year's study. "The decline in quality is particularity acute for vehicles with four-cylinder engines," Power reports. Problems in vehicles has gone up 6 % since last year.
It's based on # of problems per 100 vehicles. Industry average is 133 problems per 100 vehicles. The most reliable i Lexus w/ 68 problems reported per 100 vehicles.. The worst w/ 185 problems per 100 vehicles is what I drive, The MINI COOPER It doesn't surprise me it's the "LEAST RELIABLE!' Fun to drive, but multiple repairs after the warranty SUCKS!
Here's the list of most reliable to least brands. There are also lists of top 3 best in different categories that you can find here! Brand scores (problems per 100 vehicles for 2011 models; lower is better):