The M45 seats five and is outfitted with a 4.5-liter V8 engine that produces 325 horsepower and 336 lb.-ft. of torque. This sedan has a five-speed automatic transmission which includes a selectable manual shift mode. A Rear Active Steer system is optional. Safety features that come standard include airbags (front-seat, side-impact, and side curtain), all-disc anti-lock brakes, and an electronic stability system. Adaptive xenon headlights that shine in the direction of a turn are also standard.The 2009 INFINITI M45 is a carryover from 2008.