The "M" simply signifies the next model in a series. In 1955 Chrysler introduced the C-300 (Chrysler-300 Horsepower). This series continued annually until the 300L in 1965. There was also the 300 Hurst in 1970. In 2005 Chrysler restarted the 300 letter series with an all new 300C.
The curb weight of the 2008 Chrysler 300 is 3725 lbs.
The maximum tosing capacity of the 2010 Chrysler 300 is 1000 lbs..
The gas tank on the 2009 Chrysler 300 holds 18.0 gal..
The 2005 Chrysler 300 has a 10 ft. 0 in. (120 in.) wheel base.
The 2008 Chrysler 300 has double overhead cam (DOHC).
The 2014 Chrysler 300 has a drag coefficient of 0.32 Cd.