Black w/Alcantara/Leather Seat Trim. 4MATIC ! Gasoline! If you demand the best things in life, this wonderful 2006 Mercedes-Benz M-Class is the low-mileage SUV for you. It's as fresh an example as you'll find on the market and will still look as good as new for years to come. J.D. Power and Associates gave the 2006 M-Class 4.5 out of 5 Power Circles for Overall Performance and Design.