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 antilock brakes, and an electronic stability system. Adaptive xenon headlights that shine in the direction of a turn are also standard.The 2008 Infiniti M45 has new interior and exterior stylings, including a choice between revised wood and aluminum trim interior, and changes to the grille and rear fenders.