|Parent company ||Daimler AG|
|Assembly ||Tuscaloosa, Alabama, USA|
Mexico City, Mexico
|Class ||Sports Touring Wagon / Full-size crossover SUV|
|Body style(s) ||5-door wagon|
|Layout ||Front engine, rear-wheel drive / four-wheel drive|
|Platform ||Mercedes-Benz W251|
|Engine(s) ||3.0L V6|
|Transmission(s) ||7-speed automatic|
|Wheelbase ||3215 mm (126.6 in)|
|Length ||5157 mm (203.0 in)|
|Width ||2006–08: 1922 mm (75.7 in)|
2009–: 77.1 in (1958 mm)
|Height ||1661 mm (65.4 in)|
|Related ||Mercedes-Benz M-Class|
The R-Class is offered in two wheelbases, 2,980 mm (117.3 in) and 3,215 mm (126.6 in).
Models using the BlueTec Diesel engine will be introduced for the 2009 model year.
|Model ||Engine ||Power|
|R 280 CDI ||3.0 L V6 ||190 PS (140 kW; 190 hp)|
|R 320 CDI ||3.0 L V6 ||224 PS (165 kW; 221 hp)|
|R 280 ||3.0 L V6 ||231 PS (170 kW; 228 hp)|
|R 350 ||3.5 L V6 ||272 PS (200 kW; 268 hp)|
|R 500 ||5.0 L V8 ||306 PS (225 kW; 302 hp)|
|R 550 ||5.5 L V8 ||388 PS (285 kW; 383 hp)|
|R 63 AMG ||6.2 L V8 ||510 PS (380 kW; 500 hp)|
AMGThe AMG version of the W251, the R63 AMG, was introduced at the 2006 North American International Auto Show as a 2007 model. It features a handbuilt 6.2 L M156 V8 engine producing 503 hp (375 kW) and 465 ft·lbf (630 N·m) of torque. Mercedes-Benz's 7G-Tronic seven-speed automatic transmission is standard, but the R63 features AMG-calibrated shift times with shifting buttons on the back of the steering wheel.
The R63 AMG is electronically limited to a top speed of 155 mph (249 km/h), with 0-60 mph time of 5.0~ seconds. It is no longer sold in the United States.
SafetyThe R-Class scores "Good" in the IIHS front crash test. But was given an "Acceptable" rating in the side impact crash test before 2009 models built after September 2008 because the test dummy's torso faced excessive loads. For 2009 models built after September 2008, Mercedes modified the seatbelts and interior door trim and the IIHS rated the R-class "Good" overall in side impacts allowing the R-Class to receive the Top Safety Pick award.
Mercedes-Benz announced in May 2007 that the R-Class range would be broadened. Rear-wheel drive variants will be available in addition to the four-wheel-drive versions, and more flexible seating options (5, 6, or 7-seat versions) would be offered, AMG styling and a new three litre petrol and diesel engine will be available in the R280 and R280 CDI.