2009 GMC Sierra Hybrid Truck EPA Hybrid Fuel Economy Ratings

GMC Sierra hybrid trucks use regular gas.

2009 GMC Sierra Hybrid 2WD Truck

• 8 cyl, 6L, automatic (variable gear ratios):

• 21 city | 22 highway

2009 GMC Sierra Hybrid 4WD Truck

• 8 cyl, 6L, automatic (variable gear ratios):

• 20 city | 20 highway

About Fuel Economy Ratings

A truck's actual gas mileage usage is never tested in the real world -- no wind resistance, no accessories running. To top it off, simulated speeds are far less than the average driver drives. Use EPA ratings to help you compare vehicles in a class, but don't count on them for an accurate projection of your actual gas mileage.

How Fuel Economy Ratings Are Calculated