Mercedes-Benz tops the list in customer satisfaction according to a survey conducted by the 2012 Prospect Satisfaction Index (PSI).  

Acura, Infiniti and Lexus follow closely behind. In all, 24 of 34 auto brands have dramatically improved their prospect of satisfaction scores from 2011 to 2012.

Sitting at the bottom of the survye were: Jeep, Kia, Porsche, Suzuki and Mitsubishi. The survey was organized in joint venture with the Pied Piper Management Company in Monterey, California.

Mercedes led in 60 separate sales activtiy categories measured by the Pied Piper. The index of the survey points out that salespersons at Subaru, Buick and Volkswagen dealerships were 50 percent more likely to offer their colored brochure to potential than employees at Hyundai, Jeep or BMW dealerships.

"This year's record high PSI results show that today's dealership employees work harder than ever to be helpful to car shoppers," President and CEO of Pied Piper, Fran O'Hagan said.

Here's the complete list of 2012 Pied Piper PSI rankings:

1. Mercedes-Benz

2.  Acura

3. Infiniti

4.  Lexus

5. Jaguar

6. Cadillac

7. Fiat

8. Honda

9. Ram

10. Toyota

11. Volvo

12. BMW

13. Buick

14. GMC

15. Lincoln

16. Mazda

17. Nissan

18. Subaru

19. Volkswagen

20. Chevrolet

21. Chrysler

22. Ford

23. Land Rover

24. Mini

25. Smart

26. Dodge

27. Hyundai

28. Scion

29. Audi

30. Jeep

31. Kia

32. Porsche

33. Suzuki

34. Mitsubishi

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