2020 GMC Sierra 2500 HD MPG
Based on data from 48 vehicles, 3,215 fuel-ups and 1,185,346 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 (0.89%) 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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No Greater Love
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2021 • 18 Fuel-upsProperty of mattjames11
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12.3 Avg MPG
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L5P
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Apr 2021 • 50 Fuel-upsProperty of jwmontoya
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14.2 Avg MPG
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‘Nali
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jul 2023 • 40 Fuel-upsProperty of raulserrano
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17.7 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Sep 2020 • 151 Fuel-upsProperty of Xaositek
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16.2 Avg MPG
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Duramax
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added May 2021 • 97 Fuel-upsProperty of Silentfun65
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14.5 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
Added May 2020 • 68 Fuel-upsProperty of uncledot
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13.3 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jan 2021 • 117 Fuel-upsProperty of DMaxTRR
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15.9 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jan 2022 • 146 Fuel-upsProperty of BPowAT4HD
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16.5 Avg MPG
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Sierra
2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jan 2023 • 22 Fuel-upsProperty of bradford29
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17.3 Avg MPG
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FLWKS 2500HD AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2020 • 104 Fuel-upsProperty of hockeyvillian
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14.5 Avg MPG
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BatMobile II
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 155 Fuel-upsProperty of Rocinante1
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16.0 Avg MPG
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Big Red II
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Aug 2020 • 150 Fuel-upsProperty of TackleBox
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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 Mar 2023 • 24 Fuel-upsProperty of aricb23
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10.9 Avg MPG
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Red
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 135 Fuel-upsProperty of llljrmd
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16.5 Avg MPG
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Blue Beast
2020 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed Extended Cab Pickup
Added Sep 2020 • 46 Fuel-upsProperty of JustinID
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13.5 Avg MPG
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GMC AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2021 • 38 Fuel-upsProperty of gil_bradshaw
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15.6 Avg MPG
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2020 AT4 2500HD
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Apr 2022 • 21 Fuel-upsProperty of rab986
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16.8 Avg MPG
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Sierra 2500HD Duramax
2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Aug 2020 • 61 Fuel-upsProperty of RamMan88
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16.0 Avg MPG
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Denali 2500HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Nov 2020 • 29 Fuel-upsProperty of eastcoasthd
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14.2 Avg MPG
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FURY
2020 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added Sep 2020 • 28 Fuel-upsProperty of Thumpy
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14.3 Avg MPG