Car Performance and Modification

For the 2007 model year, the Garrett turbochargers were replaced with low-inertia Mitsubishi units designed to improve engine response. The engine was mated to a version of the six-speed ZF automatic transmission found in the Continental range. Also, the capacity of the engine is increased from 6,749 cubic centimetres (411.8 cu in) to 6,761 cubic centimetres (412.6 cu in). The new tunings give Arnage T 373 kilowatts (507 PS; 500 bhp) and 1,000 newton metres (738 ft·lbf), while the milder Arnage R having 336 kilowatts (457 PS; 451 bhp) and 875 newton metres (645 ft·lbf). For the performance oriented T, factory stated 0-60 mph acceleration is only 5.2 seconds, and the top speed is 288 kilometres per hour (179.0 mph).