Dee-Ann Durbin

DETROIT: Lexus, Porsche and Buick are the most dependable vehicle brands based on the number of problems reported by owners, according to a study released Wednesday by the consulting firm J.D. Power.

Toyota and GMC round out the top five most dependable brands. Dodge, Ford, Smart, Land Rover and Jeep are the least dependable, with the most problems reported per vehicle.

The study, now in its 27th year, questioned 33,560 owners of 2013 model-year vehicles about issues they have had in the last 12 months.

Owners were most likely to report problems with entertainment systems, navigation and phone connectivity. Those issues are growing and have lowered the entire industrys dependability scores. Those scores are important, because buyers who are unhappy with their vehicles are less likely to buy a future vehicle from the same brand.

Automakers are racing to add smartphone compatibility and other high-tech features to their dashboards in order to woo millennials and prevent tech companies like Apple and Google from taking over that space. But its been a rough ride. Automakers early infotainment systems have been clunky and hard to use, especially for consumers who are accustomed to intuitive smartphones.

Brands that saw the steepest declines in their dependability scores this year Scion, Nissan and Cadillac all introduced new vehicles with new infotainment systems in the 2013 model year. Brands seeing the biggest improvement Fiat, Mini and Volvo made only minor changes to their lineups.

J.D. Power says the most common technology-related complaints are voice recognition systems that misinterpret commands and phones that dont pair up with the car.