2020 GMC Sierra 2500 HD MPG
Based on data from 48 vehicles, 3,251 fuel-ups and 1,198,955 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.26 with a 0.12 MPG margin of error.
Below you can see a distribution of the fuel-ups with 29 outliers (0.88%) removed.
Following shows the average MPG of each of the 48 vehicles in the system.
2020 GMC Sierra 2500 HDs For Sale Nearby
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added May 2022 • 51 Fuel-upsProperty of jblythe
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12.9 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added May 2021 • 4 Fuel-upsProperty of vepil
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16.2 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 GAS Automatic 6 Speed
Added Aug 2020 • 8 Fuel-upsProperty of shreff86
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11.6 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Feb 2021 • 3 Fuel-upsProperty of NickCrow
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13.6 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Oct 2020 • 25 Fuel-upsProperty of powell1983
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16.7 Avg MPG
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Wanda
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Feb 2020 • 32 Fuel-upsProperty of amepena
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17.9 Avg MPG
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Sierra 2500HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added May 2020 • 8 Fuel-upsProperty of M3atEater
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18.9 Avg MPG
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Beastly Bunny
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic Crew Cab Pickup
Added Feb 2020 • 6 Fuel-upsProperty of Jvorpagel
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14.3 Avg MPG