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GMC Sierra 1500 Fuel Economy (g/100m)

g/100m Number of Vehicles
5 gallons per 100 meters 1 vehicles
6 gallons per 100 meters 9 vehicles
7 gallons per 100 meters 1 vehicles
8 gallons per 100 meters 0 vehicles
9 gallons per 100 meters 0 vehicles
10 gallons per 100 meters 0 vehicles
11 gallons per 100 meters 0 vehicles
12 gallons per 100 meters 0 vehicles
13 gallons per 100 meters 0 vehicles
14 gallons per 100 meters 0 vehicles
15 gallons per 100 meters 0 vehicles
16 gallons per 100 meters 0 vehicles
17 gallons per 100 meters 0 vehicles
18 gallons per 100 meters 0 vehicles
19 gallons per 100 meters 0 vehicles
20 gallons per 100 meters 0 vehicles
21 gallons per 100 meters 0 vehicles
22 gallons per 100 meters 0 vehicles
23 gallons per 100 meters 0 vehicles
24 gallons per 100 meters 0 vehicles
25 gallons per 100 meters 0 vehicles
26 gallons per 100 meters 0 vehicles
27 gallons per 100 meters 0 vehicles
28 gallons per 100 meters 0 vehicles
29 gallons per 100 meters 0 vehicles
30 gallons per 100 meters 0 vehicles
31 gallons per 100 meters 0 vehicles
32 gallons per 100 meters 1 vehicles
Model Year Body/Powertrain g/100m  
2005 2005 4dr Crew Cab 5.5ft bed 295-hp 5.3L V8 4-sp automatic 4WD w/low range 6.21
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With the engine, transmission, and rear-wheel drive, the 2005 GMC Sierra 1500 has been averaging 6.21 L/100km (liters per 100 kilometers).

The 2005 GMC Sierra 1500s in this analysis were driven mostly on the highway at an average speed of 68 kilometers per hour (about 81 percent of the kilometers driven). The rest of the kilometers were in the city (9.7 percent), in the suburbs (0 percent), and in heavy traffic (0 percent).

In addition, the average 2005 GMC Sierra 1500 in this analysis was driven on hilly terrain with a light foot and the AC on only some of the time.
2005 2005 4dr Extended Cab 6.5ft bed 310-hp 5.3L V8 4-sp automatic 4WD w/low range 6.25
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2005 2005 4dr Extended Cab 6.5ft bed 295-hp 5.3L V8 4-sp automatic 4WD w/low range 5.72
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2005 2005 4dr Extended Cab 6.5ft bed 285-hp 4.8L V8 4-sp automatic 4WD w/low range 31.8
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2005 2005 2dr Regular Cab 6.5ft bed 285-hp 4.8L V8 4-sp automatic RWD 5.13
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What Our Members Are Saying about the Real Gas Mileage of the 2005 GMC Sierra 1500

2005 GMC Sierra 1500 Real Gas Mileage: Pros
YearBody/PowertrainComment
2004 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 Its great. see full GMC Sierra 1500 review
2005 GMC Sierra 1500 Real Gas Mileage: Cons
YearBody/PowertrainComment
2006 4dr Extended Cab 6.5ft bed 295-horsepower 5.3L V8
4-speed automatic 4WD w/low range		 Fuel economy is a suggestion - the truck, like all trucks, gets mediocre fuel economy. see full GMC Sierra 1500 review
 

2005 GMC Sierra 1500 Gas Mileage (g/100m)

Unlike other fuel economy surveys, TrueDelta's Real-World Gas Mileage Survey includes questions about how and where a car was driven. So you can get an idea of the GMC Sierra 1500's real-world g/100m based on how and where you drive a car.