Mercedes-Benz R-Class - R63 AMG

The 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 lb·ft (630 N·m) of torque. Mercedes-Benz's 7G-Tronic seven-speed automatic transmission is standard across the R-Class lineup, with the R63's version of the gearbox featuring 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 (250 km/h), with 0-62 mph time of 5.0 seconds. The R63 AMG features 4MATIC all-wheel drive like the ML63 AMG.

The notion of a high-performance AMG version of the R-Class was not well-received, given the heavy weight of the vehicle, and as Mercedes-AMG in general was accused of stuffing huge engines stuffed into chassis' with poor handling dynamics. Due to low sales, as the majority chose diesel-powered vehicles, the R63 was taken out of production in 2007 along with several changes in the R-Class lineup.

Read more about this topic:  Mercedes-Benz R-Class