It is not only the optional two-tone interior design which deserves the valuation "luxurious": the materials, with their enhanced quality feel and superb workmanship do so, too. The steering wheel – equipped as standard with gearshift paddles, by the way – is trimmed in fine nappa leather. The door centre panels are covered as standard (and the dashboard optionally) in high-quality ARTICO man-made leather. Behind their covers, powerful loudspeakers can be heard, but can hardly be seen. Optionally, the M-Class can be equipped with an instrument cluster with two-colour leather cover and elegant leather upholstery.