with a larger displacement (4.8 L) and 367 PS (270 kW). The range-topping M6 arrived in late 2005, using the same V10 engine as the M5 , with 507 PS (373 kW). In 2007 the 635d (Twin Turbo 3.0L Diesel) was introduced with 286 PS (210 kW) and 430 ft·lbf (580