Chrysler 300 SRT8 Transmission by year

YearTransmission
20145-speed automatic
20135-speed automatic
20125-speed automatic
20104-speed automatic or 5-speed automatic
20094-speed automatic or 5-speed automatic
20084-speed automatic or 5-speed automatic
20074-speed automatic or 5-speed automatic
20065-speed automatic
20054-speed automatic or 5-speed automatic

Source: U.S. EPA / DOE fuel economy data (fueleconomy.gov).