2020 GMC Sierra 2500 HD MPG
Based on data from 44 vehicles, 2,792 fuel-ups and 1,031,734 miles of driving, the 2020 GMC Sierra 2500 HD gets a combined Avg MPG of 14.32 with a 0.13 MPG margin of error.
Below you can see a distribution of the fuel-ups with 26 outliers (0.92%) removed.
Following shows the average MPG of each of the 44 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 SLE 6.6L V8 GAS Automatic 6 Speed
Added Mar 2022 • 132 Fuel-upsProperty of hoodsh
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14.2 Avg MPG
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COVID Cruiser
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 202 Fuel-upsProperty of jambiefsj
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16.9 Avg MPG
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2020 Sierra 2500 Duramax
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Dec 2019 • 247 Fuel-upsProperty of mnoland2000
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13.0 Avg MPG
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2020 Denali 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2020 • 128 Fuel-upsProperty of maaiman
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15.9 Avg MPG
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AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jul 2022 • 79 Fuel-upsProperty of Dziuky
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16.9 Avg MPG
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Sierra 2500 HD
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Feb 2024 • 6 Fuel-upsProperty of tdbreeding
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13.1 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
Added Aug 2022 • 51 Fuel-upsProperty of jeepin13
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14.5 Avg MPG
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Gallo Negro
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added May 2022 • 18 Fuel-upsProperty of doakman1
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10.1 Avg MPG
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Granite AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed Crew Cab Pickup
Added Oct 2020 • 151 Fuel-upsProperty of NHATC
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11.2 Avg MPG
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My Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Aug 2023 • 21 Fuel-upsProperty of rlsudlow
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14.1 Avg MPG
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My Denali 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Dec 2022 • 8 Fuel-upsProperty of fasdon
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10.8 Avg MPG
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No Greater Love
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2021 • 13 Fuel-upsProperty of mattjames11
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11.6 Avg MPG
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‘Nali
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jul 2023 • 36 Fuel-upsProperty of raulserrano
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17.8 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 • 145 Fuel-upsProperty of Xaositek
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16.1 Avg MPG
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GMC AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2022 • 61 Fuel-upsProperty of furlofoder
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13.7 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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Sierra 2500 HD
2020 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 69 Fuel-upsProperty of bto71
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14.2 Avg MPG
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Duramax
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added May 2021 • 96 Fuel-upsProperty of Silentfun65
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14.5 Avg MPG
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Pimpin AT4
2020 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Aug 2023 • 9 Fuel-upsProperty of cdizzle
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13.3 Avg MPG