Jaguar and Mini buyers win the J.D. Power 2013 U.S. Sales Satisfaction Index (SSI) Study. Jaguar ranked first among luxury buyers with a score of 740 points followed closely by Porsche (739) and Lexus (737). Among “mass market”vehicles, Mini topped the chart with a score of 718, which was a six-point jump compared with the previous year. It’s the fourth consecutive year the brand has finished atop the list. Volvo experienced the biggest jump from year-to-year gaining 30 points to 708 and moving from 11th place in 2012 to ninth this year.