Bugatti Veyron Transmission by year

YearTransmission
20157-speed automated manual (dual-clutch)
20147-speed automated manual (dual-clutch)
20137-speed automated manual (dual-clutch)
20127-speed automatic
20117-speed automatic
20107-speed automatic
20086-speed automatic
20066-speed automatic

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