My 2007 is a much better vehicle than my 2003SL. While the styling is similar, the new 7 speed transmition is fabulously smooth, the additional horsepower of the 550 vs. the old 500 is very noticable and the handling greatly improved. Also improved is the breaking which has eliminated the annoying "cluncking" sound and hesitation experienced in the 2003. Still a problem seems to be the computer system operating the ABC (active body control system). It was a constant problem with my 2003 and unfortunately has once more shown up on my 2007. The car was in the shop for 2 weeks while the computer part was flown in from Germany. Aside from this one electrical problem, the car is fantastic.
Obviously the retractible top. Styling and handling
Better sound system which would incorporate rear speakers or speakers also built into the seats for driving high speed with the top down. Full warranty coverage like BMW for the first 50,000 miles
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