General Motors’ name for their proprietary automobile variable displacement technology. Active Fuel Management allows a V8 engine to "shut down" half of the cylinders under light-load conditions to improve fuel efficiency.
Any materials or substances that can be used as fuel outside of conventional fuels. Popular alternative fuels include biodiesel, bioalcohol (methanol, ethanol, and butanol), chemically stored electricity (batteries and fuel cells), hydrogen, non-fossil methane, non-fossil natural gas, vegetable oil and other biomass sources.
A measurement of how much fuel is required to produce a specific amount of engine power.
Conventional materials or substances that can be used as fuel. Conventional fuels include fossil fuels (i.e. petroleum, coal, propane, and natural gas) and nuclear materials (i.e.Uranium).
Technology that reduces engine fuel consumption and emissions by closing the intake and exhaust valves for a particular cylinder and releases trapped exhaust gases from the combustion chamber. The compression and decompression of trapped gases allows the engine to operate more efficiently.
The process of injecting highly pressurized gasoline directly into the combustion chamber of each cylinder for improved engine efficiency.
Vehicles that are powered by an electric motor which use rechargeable battery packs instead of conventional fuels.
An agency of the U.S. federal government that is responsible for the protection of human health and the environment through legislation.
Vehicles that are powered by gasoline or a blend of up to 85% ethanol (E85).
The distance traveled per unit of fuel used. Fuel economy is most commonly measured by miles per gallon (MPG).
EPA mileage (MPG) assigned to new vehicles.
Energy efficiency or total output of a particular vehicle model. Energy efficiency is a ratio of range units per a unit amount of input fuel (gasoline, diesel, etc.).
Ratio of the total miles traveled per the number of gallons of gasoline burned.
Vehicles that are powered by two distinct sources. A common hybrid vehicle is the hybrid electric vehicle (HEV), which is powered by both an internal combustion engine and one or more electric motors.
Miles per gallon
Total miles a vehicle can cover on just one tank of gas.
Air compressor that increases engine power by forcing the induction of an internal combustion engine.
Gas compressors that increase engine power by compressing the density of air that enters the engine.
Automobile technology that allows the lift, duration or timing of the intake and exhaust valves to change while the engine is in operation. VVT alters cam timing, which results in greater engine efficiency and power. (For more information visit http://www.fueleconomy.gov/feg/tech_engine_more.shtml).
1. E85 is 85% ethanol and 15% gasoline. Find E85 stations near you.
2. EPA estimated MPG 15 city/21 hwy. with the 5.3L V8 engine. Based on 2011 GM Large Pickup Segment.
3. EPA est. MPG (2WD/4WD) 20 city/ 23 hwy.
4. EPA est. MPG (2WD/4WD) 20 city/ 23 hwy. Based on 2011 GM Large Pickup segment.
5. EPA estimated MPG 15 city/21 hwy. Based on 2011 GM Large SUV Segment.
6. EPA est. MPG 20 city/23 hwy. Based on 2011 GM Large Utility Segment.
7. Based on new EPA estimates.
8. EPA estimated MPG (2WD) 32 hwy. Based on 2011 GM Compact SUV-Crossover segment.
9. Up to 600 miles. Based on 2011 GM Compact SUV-Crossover segment.
10. Sierra 1500 with 5.3L V8 engine EPA est. MPG (2WD) 15 city/21 highway; (4WD) 13 city/18 hwy. Sierra 1500 with 6.2L V8 engine EPA est. MPG (2WD) 13 city/18 highway; (AWD) 12 city/18 highway. Sierra Hybrid with 6.2L V8 engine EPA est. MPG (2WD) 20 city/23 highway; (4WD) 20 city/23 hwy. Yukon and Yukon XL models with 5.3L V8 engine EPA est. MPG (2WD) 15 city/21 highway; (4WD) 15 city/21 highway. Yukon Hybrid & Yukon Denali Hybrid models with 6.0L V8 engine EPA est. MPG (2WD) 20 city/23 highway; (4WD) 20 city/23 highway. Yukon Denali and Yukon Denali Hybrid models with 6.2L V8 engine EPA est. MPG 14 city/18 highway; (AWD) 13 city/18 highway.
11. Based on the 2011 GM Large Pickup segment. EPA est. hwy.: Sierra XFE 22 MPG/Sierra Hybrid 23 MPG, Tundra 20 MPG, F-150 21 MPG, Ram 20 MPG.
12. Yukon Hybrid 2WD with EPA estimated MPG 20 city/23 highway. Sierra Hybrid 2WD with EPA estimated MPG 20 city/23 highway.
13. Maximum payload capacity includes weight of driver, passengers, optional equipment and cargo and 6,100 lbs of trailering capacity. (Maximum trailer weight ratings are calculated assuming a base vehicle, except for any options necessary to achieve the rating, passengers and cargo will reduce the maximum trailer weight your vehicle can tow. See your GMC dealer for details).
14. EPA est. MPG 20 city Sierra Hybrid; 13 city Ram 4WD; 13 city Tundra 4WD and up to 66% more fuel efficient in the city than the Ford F-150.
15. EPA est. MPG (2WD/4WD) 20 city/ 23 hwy.
16. EPA est. MPG 20 city/23 hwy. Based on 2011 GM Large Utility Segment.
17. EPA est. MPG 20 city. Based on 2011 GM Large Utility Segment.
18. EPA est. MPG Yukon 20 city, Toyota Sienna 19 City (4 cyl) & 18 City (6 cyl)
19. EPA est. MPG 20 15 city vs city.
20. EPA est. MPG 20 city/23 hwy 2WD. Based on 2011 GM Large Utility Segment.