As Infiniti's product line has evolved, the M has become the flagship of the brand. The latest M sedan features aggressive styling and a choice of powerful V6 and V8 engines. The model range includes the 330-bhp M37 and M37x AWD V6 models and the 420-bhp M56 and M56 AWD V8 models. All are equipped with a seven-speed automatic and a host of electronic driving aids like stability control Above and beyond common luxury features the M also offers rare features like a lane-departure system and a blind spot intervention system. A Sport model features a motor-actuated active steering system that changes the rear suspension geometry to augment handling. Infiniti's M is well styled, well powered and well equipped to do battle in a robust market segment.