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The 2012 Mercedes-Benz R350 4MATIC features an all-new 3.5-liter direct-injection V6 engine (302 horsepower, 273 lb.-ft. of torque) coupled with a more fuel efficient seven speed automatic transmission. Thanks to this new powertrain the R350 4MATIC now gets significantly better fuel economy (16 city / 21 highway) while producing more power - an impressive feat, considering that increasing either power or fuel economy usually decreases the other. The R-Class is also available with a fuel-sipping BlueTEC...