Most, Least Reliable Cars Lexus is best, Mini is worst By John Johnson, Newser Staff Posted Feb 12, 2014 4:55 PM CST 47 comments Comments This undated image made available by Toyota shows the 2013 Lexus GS 450h. (AP Photo/Toyota) (Newser) – Lexus is atop JD Power's list of the most reliable cars, a spot it's held for three straight years, reports Automotive News. The annual survey asks owners of 3-year-old cars about their maintenance issues over the previous 12 months. Some highlights: Top five: Lexus, with 68 problems per 100 vehicles; Mercedes-Benz (104); Cadillac (107); Acura (109); Buick (112); Honda, Lincoln, and Toyota (tied at 114). Bottom five: Mini (185); Dodge (181); Land Rover (179); Jeep (178); and Hyundai (169) Overall quality down: Taken as a whole, vehicle dependability dropped for the first time since 1998, reports the New York Times. The number of problems per 100 vehicles rose from 126 to 133 in a year, an increase that a JD Powers exec calls "very significant." Click for the full list.