Mercedes-Benz GL-Class Transmission by year

Year	Transmission
2016	7-speed automatic
2015	7-speed automatic
2014	7-speed automatic
2013	7-speed automatic
2012	7-speed automatic
2011	7-speed automatic
2010	7-speed automatic
2009	7-speed automatic
2008	7-speed automatic
2007	7-speed automatic

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