Based on data from 87 vehicles, 6,369 fuel-ups and 2,370,722 miles of driving, the 2021 Ram 3500 gets a combined Avg MPG of 12.00 with a 0.11 MPG margin of error.

Any Engine Type 6.4L V8 GAS (8) 6.7L L6 DIESEL (74) Any Body Style Standard Cab Pickup (2) Crew Cab Pickup (13) Cab & Chassis (1) Extended Crew Cab Pickup (5) Any Submodel Lone Star (1) Laramie Longhorn (6) Big Horn (15) Limited (16) Tradesman (16) Laramie (33)

Below you can see a distribution of the fuel-ups with 119 outliers (1.83%) removed.

Following shows the average MPG of each of the 87 vehicles in the system.

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• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added May 2021 • 384 Fuel-ups

  Property of taterdude

• 11.7 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Jan 2025 • 6 Fuel-ups

  Property of Rees4566

• 9.7 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 8 Speed
  Added Oct 2024 • 132 Fuel-ups

  Property of errosfitz

• 10.1 Avg MPG

• My 3500

  2021 Ram 3500 Limited 6.7L L6 DIESEL Automatic 6 Speed
  Added Nov 2022 • 77 Fuel-ups

  Property of Koz24

• 15.6 Avg MPG

• Ram 3500

  2021 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Dec 2024 • 56 Fuel-ups

  Property of dsrfloyd

• 15.8 Avg MPG

• Ruby

  2021 Ram 3500 Big Horn 6.7L L6 DIESEL Automatic 6 Speed Extended Crew Cab Pickup
  Added Aug 2021 • 221 Fuel-ups

  Property of HomeyHD

• 13.6 Avg MPG

• Silver bullet

  2021 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed
  Added Jun 2021 • 295 Fuel-ups

  Property of pls313

• 15.3 Avg MPG

• My 3500

  2021 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed
  Added Jun 2021 • 551 Fuel-ups

  Property of saulG96

• 12.3 Avg MPG

• Ram 3500

  2021 Ram 3500 Limited
  Added Mar 2021 • 404 Fuel-ups

  Property of TRMNTR

• 11.9 Avg MPG

• My 3500

  2021 Ram 3500 Limited 6.7L L6 DIESEL Automatic 6 Speed
  Added Jun 2021 • 258 Fuel-ups

  Property of Brett81

• 15.4 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Jun 2021 • 202 Fuel-ups

  Property of moveitwhite

• 13.0 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Aug 2024 • 30 Fuel-ups

  Property of BarMD

• 18.0 Avg MPG

• Goliath

  2021 Ram 3500 Limited 6.7L L6 DIESEL Automatic 6 Speed Extended Crew Cab Pickup
  Added Sep 2021 • 50 Fuel-ups

  Property of SoonerFan

• 10.8 Avg MPG

• BBJ

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Feb 2021 • 195 Fuel-ups

  Property of tcorno43

• 10.5 Avg MPG

• ‘21 RAM 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Nov 2021 • 121 Fuel-ups

  Property of T-Ball

• 14.1 Avg MPG

• Jarvis

  2021 Ram 3500 Limited 6.7L L6 DIESEL Automatic 6 Speed
  Added Mar 2021 • 174 Fuel-ups

  Property of jamessgibson

• 10.7 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Apr 2021 • 404 Fuel-ups

  Property of Fathead

• 10.6 Avg MPG

• My 3500

  2021 Ram 3500 Laramie Longhorn 6.7L L6 DIESEL Automatic 6 Speed
  Added Mar 2022 • 43 Fuel-ups

  Property of KGBoettcher

• 11.8 Avg MPG

• My 3500

  2021 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added May 2021 • 161 Fuel-ups

  Property of lazer_beem

• 14.5 Avg MPG

• 2021 3500

  2021 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed
  Added Mar 2021 • 64 Fuel-ups

  Property of MR4WLR

• 13.0 Avg MPG

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