Based on data from 39 vehicles, 2,893 fuel-ups and 926,684 miles of driving, the 2021 Chevrolet Silverado 3500 HD gets a combined Avg MPG of 12.90 with a 0.14 MPG margin of error.

Any Engine Type 6.6L V8 DIESEL (36) 6.6L V8 GAS (3) Any Body Style Crew Cab Pickup (11) Any Submodel WT (3) LTZ (8) LT (14) High Country (14)

Below you can see a distribution of the fuel-ups with 20 outliers (0.69%) removed.

Following shows the average MPG of each of the 39 vehicles in the system.

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• Sammy SR

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2021 • 45 Fuel-ups

  Property of mjshultz

• 10.7 Avg MPG

• Chevy

  2021 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2022 • 98 Fuel-ups

  Property of d_westall

• 14.2 Avg MPG

• Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed
  Added Jan 2022 • 148 Fuel-ups

  Property of oppeke01

• 13.6 Avg MPG

• 21 Dually Silverado

  2021 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2021 • 99 Fuel-ups

  Property of julianwarren2

• 11.5 Avg MPG

• Fred

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2021 • 204 Fuel-ups

  Property of mertzm

• 12.2 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 GAS Automatic 6 Speed
  Added Mar 2021 • 245 Fuel-ups

  Property of hafnutz67

• 11.6 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Jul 2021 • 152 Fuel-ups

  Property of preacher238

• 14.4 Avg MPG

• Truck

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 GAS Crew Cab Pickup
  Added Jan 2023 • 38 Fuel-ups

  Property of CiATRiX

• 13.5 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Oct 2022 • 62 Fuel-ups

  Property of gsteinho

• 14.8 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Nov 2020 • 126 Fuel-ups

  Property of bobp30

• 13.9 Avg MPG

• 1 Gertrude

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added May 2021 • 94 Fuel-ups

  Property of AndieAnderson

• 14.7 Avg MPG

• Black Betty

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jun 2024 • 34 Fuel-ups

  Property of novaman64

• 13.0 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Aug 2021 • 168 Fuel-ups

  Property of chrisblah

• 14.0 Avg MPG

• Silverado 3500HD

  2021 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added May 2021 • 73 Fuel-ups

  Property of Charles_slc

• 15.1 Avg MPG

• Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2021 • 165 Fuel-ups

  Property of kevnjan7

• 17.2 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed
  Added Apr 2021 • 127 Fuel-ups

  Property of MarkDroubay

• 14.8 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Dec 2023 • 42 Fuel-ups

  Property of llegocki

• 10.1 Avg MPG

• My Silverado 3500 HD

  2021 Chevrolet Silverado 3500 HD LT 6.6L V8 DIESEL Automatic 10 Speed
  Added Feb 2023 • 43 Fuel-ups

  Property of Paul5608

• 16.6 Avg MPG

• Chevy Adventure

  2021 Chevrolet Silverado 3500 HD High Country 6.6L V8 DIESEL Automatic 10 Speed Crew Cab Pickup
  Added Jan 2021 • 186 Fuel-ups

  Property of tgrshk19

• 11.1 Avg MPG

• Silverado 3500HD

  2021 Chevrolet Silverado 3500 HD LTZ 6.6L V8 DIESEL
  Added Jan 2024 • 12 Fuel-ups

  Property of CtryBoyInMT

• 15.2 Avg MPG

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