For the fourth consecutive year, Lexus has come out on top of the annual Vehicle Dependability Study. The study examines areas such as general overall satisfaction and mechanical issues. Infotainment systems and Bluetooth are especially popular now. Customers are often attracted to them because they're new and interesting. However, when those systems don't work as intended, buyers are then turned off by the manufacturer as a whole. The fact that Lexus has earned the highest score is not surprising, but what is, and in a good way, is that Buick also managed to make the J.D. Powers' Top 10 list. At the other end of the spectrum, Chrysler scored below average, and its Fiat brand came in dead last. But hey, way to go Buick!