Based on data from 35 vehicles, 2,396 fuel-ups and 889,008 miles of driving, the 2020 Chevrolet Silverado 3500 HD gets a combined Avg MPG of 13.28 with a 0.17 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (34) 6.6L V8 GAS (1) Any Body Style Crew Cab Pickup (9) Any Submodel WT (2) High Country (8) LT (11) LTZ (14)

Below you can see a distribution of the fuel-ups with 25 outliers (1.03%) removed.

Following shows the average MPG of each of the 35 vehicles in the system.

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• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2020 • 237 Fuel-ups

  Property of whidbeyrob

• 15.3 Avg MPG

• Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2025 • 21 Fuel-ups

  Property of rooneyfl444

• 16.4 Avg MPG

• 62001

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 6 Speed
  Added Dec 2024 • 129 Fuel-ups

  Property of Hirail_Harold

• 13.3 Avg MPG

• 62002 Herzog

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2024 • 81 Fuel-ups

  Property of tskipp88

• 10.5 Avg MPG

• 20BlackDuramax

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2020 • 242 Fuel-ups

  Property of blackduramax

• 12.3 Avg MPG

• Silverado 3500

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Aug 2020 • 187 Fuel-ups

  Property of c89dan

• 14.2 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2020 • 100 Fuel-ups

  Property of randy68d

• 15.4 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2020 • 84 Fuel-ups

  Property of richmanmh

• 12.8 Avg MPG

• Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Nov 2024 • 88 Fuel-ups

  Property of tbaxter875

• 15.1 Avg MPG

• Chevy Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2025 • 17 Fuel-ups

  Property of lanman007

• 13.1 Avg MPG

• Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Sep 2021 • 96 Fuel-ups

  Property of iamyourpilot

• 15.7 Avg MPG

• Olaf II 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2020 • 11 Fuel-ups

  Property of Shovlin

• 22.7 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Oct 2020 • 169 Fuel-ups

  Property of austinandbrit02

• 13.5 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2023 • 71 Fuel-ups

  Property of jgustavson

• 19.2 Avg MPG

• My Silverado 3500 HD Dump Truck

  2020 Chevrolet Silverado 3500 HD WT 6.6L V8 GAS Automatic 6 Speed
  Added Mar 2024 • 48 Fuel-ups

  Property of farmboy555

• 8.8 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Jun 2025 • 13 Fuel-ups

  Property of smhooper91

• 9.9 Avg MPG

• 3500

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Aug 2021 • 3 Fuel-ups

  Property of chrisbrugg

• 54.4 Avg MPG

• My Silverado 3500 HD

  2020 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Mar 2021 • 150 Fuel-ups

  Property of redraider417

• 16.1 Avg MPG

• Big Blue

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2023 • 25 Fuel-ups

  Property of ReyM

• 15.5 Avg MPG

• Big Blue

  2020 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Oct 2020 • 108 Fuel-ups

  Property of theHarv3s

• 13.5 Avg MPG

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