A 3.5-liter high-output aluminum V6 delivers 253 horsepower and 255 foot-pounds of torque to the front wheels of the 300M. Designed to deliver strong torque like a V8, this V6 features 24 valves and single overhead cams. Mid-grade 89-octane gasoline delivers the best performance, but it will run fine on 87 octane. It meets Low Emissions Vehicle (LEV) standards. The 300M comes standard with DaimlerChrysler's AutoStick transmission, which gives the driver a choice of conventional automatic operation or manual control.

Plenty of power is on tap for accelerating off the line, climbing mountain roads and passing other cars. The engine is smooth and quiet, but growls when provoked. A broad torque curve means it's ready to provide instant throttle response at any speed. Chrysler's AutoStick is entertaining on the daily commute and gives the driver better control on winding roads. Usually, though, we found normal automatic operation the best way to go. It's an efficient transmission that selects the appropriate gears and does not hunt excessively.

The standard suspension works extremely well with quick, responsive steering response. Overall, the 300M feels like a refined luxury sports touring sedan. Noise and vibration are not at Lexus levels, however. A small amount of wind noise can be heard and a bit of road vibration comes through.

The optional handling package includes firmer strut damping, taller rear jounce bumpers, a firmer feeling steering gear, Michelin HX all-season performance tires, high-performance brake linings, stiffer front brake calipers and externally vented brake rotors. The suspension tuning is designed for a more controlled ride, sharper steering response, improved stability in transient maneuvers and increased cornering grip. The brakes are designed to increase stopping ability, enhance pedal feel and resist brake fade in hard use.