The fuel economy of the most recent Chevrolet TrailBlazer vehicles, from model year 2009 in the United States, ranges between 12 and 21 miles per gallon. The fuel economy varies depending on the wheel drive version, its engine options, and whether it drives in the city or on a highway.
For the 2009 model year, two-wheel drive TrailBlazers offered slightly better fuel economy on average than four-wheel drive models. The two-wheel drive model with an eight-cylinder, 5.3-liter engine offered the best fuel economy, estimated at 15 miles per gallon in city driving and 21 miles per gallon on the highway. The poorest performing model in terms of fuel efficiency featured all-wheel drive and an eight-cylinder, 6.0-liter engine; these vehicles only achieved a range of 12 to 16 miles per gallon.