SL500, 2D Convertible, 5.0L V8 SMPI SOHC, 7-Speed Automatic Electronic with Overdrive, Red, and CLEAN CARFAX. Navigation! Mercedes-Benz has done it again! They have built some outstanding vehicles and this good-looking and fun 2005 Mercedes-Benz SL-Class is no exception! J.D. Power named the 2005 SL-Class as the highest ranked in Overall Initial Quality Mechanical in its class. Put the top down and head out down the highway on a sunny afternoon.