M550i xDrive 4.4 V8 462hp (340kW) 650Nm (Petrol) Engine Type: Turbo Petrol Power: 462hp (340kW) Torque 650Nm (479ft-lb) Stage 1: Stage 1 Power: 542hp (399kW) Stage 1 Torque: 776Nm (572ft-lb) Power Index: 17% Torque Index: 19% 19% August 20, 2019admin