J.D. Powers and Associates conduct various market surveys. One of their better known in the automotive world is the sales satisfaction index study. This evaluation examines new-car owner's level of contentment with the sales process.The nameplates are rated on a score of 1000 points. The scores are a reflection of the fact that more cars are now equipped with features that people want coupled with the length of time that they spend in dealerships.For the second year in a row, Jaguar has topped the chart. In fact, Jaguar and Lexus were tied for first position last year. This year, Jaguar edged out Lexus by one point: 889 to 888. Third place is a tie between Buick and Porsche at 878 points.With the Industry Average score at 842 points, only Chrysler of the Big 3 was unable to place one of its brands above it. The lowest ranking is Isuzu at 743 points.