The average fuel economy for a GMC Sierra typically ranges from about 15 to 22 miles per gallon, depending on the engine, configuration, and driving conditions. For example, the Sierra's V6 engine generally offers better mileage compared to the V8 options. Overall, the specific average miles can vary widely based on the model year and individual driving habits.
The newest GMC Sierra 1500 gets about thirteen miles per gallon in the city. This is a fairly average mileage for most pick-up trucks, though much lower than most sedans.
The EPA range estimate for the 2007 GMC Sierra-3500HD is N in the city, A on the highway.
The EPA range estimate for the 2009 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2006 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2008 GMC Sierra-3500HD is N in the city, A on the highway.
The EPA range estimate for the 2003 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2011 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2013 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2001 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2011 GMC Sierra-3500HD is N in the city, A on the highway.
The EPA range estimate for the 2007 GMC Sierra-2500HD is N in the city, A on the highway.
The EPA range estimate for the 2012 GMC Sierra-3500HD is N in the city, A on the highway.