Infiniti unseated Lexus as the top luxury brand, and Buick repeated as the top mass-market make in J.D. Power's annual scorecard of satisfaction with dealership service departments. Overall, the industry posted its biggest one-year gain on the study since 2012.
Infiniti raised its score 15 points to 876 out of 1,000 in the 2018 U.S. Customer Service Index Study released Thursday. (See tables below.) It had done no better than sixth place in each of the past three years, including a below-average score in 2016.
Porsche came in second among luxury brands, while Audi finished third. Lincoln, last year's No. 3, fell to seventh, two points below average. Land Rover remained last, just behind Jaguar, which was above average the past two years and No. 1 in 2015.
Buick's score fell to 850 from 860 a year ago, but it remained No. 1 in the mass-market category, helping General Motors take three of the top four spots. It was Buick's fourth time atop the study in the past five years. Chevrolet and Mini tied for second, each trailing Buick by just one point, while GMC finished fourth.
Fiat scored lowest for a second year in a row, as all five FCA US brands ranked in the bottom six, along with Mazda.