2020 GMC Sierra 3500 HD MPG
Based on data from 42 vehicles, 2,249 fuel-ups and 803,343 miles of driving, the 2020 GMC Sierra 3500 HD gets a combined Avg MPG of 13.23 with a 0.16 MPG margin of error.
Below you can see a distribution of the fuel-ups with 50 outliers (2.17%) removed.
Following shows the average MPG of each of the 42 vehicles in the system.
2020 GMC Sierra 3500 HDs For Sale Nearby
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Mar 2024 • 6 Fuel-upsProperty of mlgriffin
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15.8 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2020 • 152 Fuel-upsProperty of fox454
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15.1 Avg MPG
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My Denali
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Mar 2020 • 109 Fuel-upsProperty of cmayfield682
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17.2 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 41 Fuel-upsProperty of freedom2020
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8.2 Avg MPG
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My Sierra 3500 HD #1
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2022 • 3 Fuel-upsProperty of Blueyfella
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5.7 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2022 • 26 Fuel-upsProperty of s10stylez
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15.2 Avg MPG
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My Denali 3500HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2021 • 43 Fuel-upsProperty of williamsm5813
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13.6 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jan 2022 • 66 Fuel-upsProperty of Grunnsetning
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13.6 Avg MPG
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Big Booty L5P
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added May 2021 • 26 Fuel-upsProperty of Bigbooty
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10.8 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2020 • 29 Fuel-upsProperty of Blueyfella
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15.1 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Sep 2020 • 24 Fuel-upsProperty of Camstyn
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14.7 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added May 2020 • 6 Fuel-upsProperty of wedgie321
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10.7 Avg MPG
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Sierra 3500 Denali HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Dec 2020 • 81 Fuel-upsProperty of voylesjake
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15.3 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jan 2020 • 59 Fuel-upsProperty of spence8870
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15.9 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2021 • 24 Fuel-upsProperty of chris129
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14.7 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2021 • 3 Fuel-upsProperty of trubluluder93
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8.3 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2021 • 5 Fuel-upsProperty of saulG96
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13.4 Avg MPG
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Becca
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jan 2020 • 6 Fuel-upsProperty of Gunslinger4
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16.5 Avg MPG
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AT 4 3500 HD
2020 GMC Sierra 3500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Sep 2020 • 16 Fuel-upsProperty of Jeferon1
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12.1 Avg MPG
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My Sierra 3500 HD
2020 GMC Sierra 3500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2020 • 9 Fuel-upsProperty of aricb23
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13.7 Avg MPG