Mercedes has presented the latest version of its R-class. The luxury cross-over made in the USA has been given an extensive facelift.From the front, the new grille and taller hood give the R-class an even greater presence on the highway. Inside, the minivan/SUV offers a variety of possible configurations, with seating for four to seven occupants. The car comes with a long list of standard features that ensure optimal safety and comfort, and Mercedes engineers have also been at work on the engine. New diesels deliver the same performance as their predecessors, but consume up to 7 percent less fuel.