2021 GMC Sierra 2500 HD MPG
Based on data from 71 vehicles, 4,523 fuel-ups and 1,457,483 miles of driving, the 2021 GMC Sierra 2500 HD gets a combined Avg MPG of 13.18 with a 0.11 MPG margin of error.
Below you can see a distribution of the fuel-ups with 19 outliers (0.42%) removed.
Following shows the average MPG of each of the 71 vehicles in the system.
2021 GMC Sierra 2500 HDs For Sale Nearby
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Apr 2023 • 111 Fuel-upsProperty of bcfiremedic
-
11.9 Avg MPG
-
2021 Sierra Denali HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Dec 2020 • 208 Fuel-upsProperty of LynnE24
-
14.2 Avg MPG
-
2021 GMC Sierra 2500 HD
2021 GMC Sierra 2500 HD 6.6L V8 GAS Automatic 6 Speed
Added Mar 2021 • 75 Fuel-upsProperty of Hay_Man_40
-
11.4 Avg MPG
-
2021 Denali HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Nov 2020 • 102 Fuel-upsProperty of DenaliDad
-
14.7 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD SLT 6.6L V8 GAS Automatic 6 Speed
Added Jan 2021 • 251 Fuel-upsProperty of kbeazley
-
10.7 Avg MPG
-
Dads Sierra 2500 HD
2021 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added Jan 2025 • 15 Fuel-upsProperty of WillyM
-
12.0 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 6 Speed
Added Jan 2025 • 10 Fuel-upsProperty of keenwyatt
-
15.6 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Sep 2023 • 186 Fuel-upsProperty of SeB21
-
17.1 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD SLT 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2024 • 35 Fuel-upsProperty of crossfamily
-
16.3 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
Added May 2021 • 256 Fuel-upsProperty of Buellx72
-
11.3 Avg MPG
-
Big Bubba. My Sierra 2500 HD
2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2021 • 114 Fuel-upsProperty of moose57
-
16.5 Avg MPG
-
GMC
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jul 2024 • 9 Fuel-upsProperty of JK27
-
13.0 Avg MPG
-
AT4 Whore
2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed
Added Mar 2021 • 165 Fuel-upsProperty of pigpen23
-
12.4 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 6 Speed
Added Nov 2024 • 19 Fuel-upsProperty of Anticyclone
-
11.0 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD AT4 6.6L V8 GAS Automatic 6 Speed
Added Jun 2021 • 200 Fuel-upsProperty of gregnola
-
12.0 Avg MPG
-
GMC AT4 - 21
2021 GMC Sierra 2500 HD AT4 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Sep 2024 • 6 Fuel-upsProperty of Landmans
-
14.1 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD SLE 6.6L V8 GAS Automatic 10 Speed
Added Oct 2021 • 169 Fuel-upsProperty of bdamats
-
11.1 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jun 2023 • 26 Fuel-upsProperty of egobuster1
-
14.8 Avg MPG
-
My Sierra 2500 HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed
Added Jul 2024 • 32 Fuel-upsProperty of josterhout1
-
15.4 Avg MPG
-
2021 Sierra 2500HD
2021 GMC Sierra 2500 HD Denali 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
Added Jan 2024 • 61 Fuel-upsProperty of Bost05
-
12.6 Avg MPG