The top-of-the-line S600 is powered by an upgraded version of the 5.5-liter twin-turbo V12 engine currently used in the $350,000 Maybach sedans rated at 510 horsepower. The engine is mated to a heavy-duty five-speed automatic. The S600 comes with extremely high levels of standard equipment, befitting its high market position. Virtually every comfort and convenience item is standard, with a huge option list to ease customization. It also adds Parktronic front and rear parking radar system, and the newly updated Distronic radar-controlled cruise control.The Mercedes-Benz S600 is a carryover from 2007.