Based on data from 129 vehicles, 11,207 fuel-ups and 3,391,048 miles of driving, the 2018 Ram 3500 gets a combined Avg MPG of 12.94 with a 0.08 MPG margin of error.

Any Engine Type 5.7L V8 GAS (1) 6.4L V8 GAS (6) 6.7L L6 DIESEL (107) L6 DIESEL (3) V6 GAS (2) V8 GAS (1) Any Body Style Crew Cab Pickup (33) Extended Cargo Van (2) Extended Crew Cab Pickup (5) Cab & Chassis - Crew Cab (2) Any Submodel Promaster (2) ST (3) Laramie Longhorn (4) Laramie Limited (5) Base (6) Limited (6) SLT (6) Big Horn (13) Tradesman (25) Laramie (58) Other (1)

Below you can see a distribution of the fuel-ups with 172 outliers (1.51%) removed.

Following shows the average MPG of each of the 129 vehicles in the system.

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• My 3500

  2018 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed
  Added Oct 2019 • 36 Fuel-ups

  Property of warrenroadie

• 16.8 Avg MPG

• My 3500

  2018 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed
  Added Jul 2019 • 70 Fuel-ups

  Property of DinduNuffin

• 11.9 Avg MPG

• RAM 3500

  2018 Ram 3500 Tradesman 6.7L L6 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Sep 2019 • 22 Fuel-ups

  Property of HeloPilot19

• 13.8 Avg MPG

• Truck

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Dec 2019 • 25 Fuel-ups

  Property of Alexcee

• 12.3 Avg MPG

• Maximus Prime

  2018 Ram 3500 Big Horn 6.7L L6 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Jul 2018 • 151 Fuel-ups

  Property of Tschilp

• 16.6 Avg MPG

• Old - 2018 Mega Cab

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Jan 2019 • 165 Fuel-ups

  Property of tlrskunk

• 11.8 Avg MPG

• Cummins

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Mar 2020 • 20 Fuel-ups

  Property of Rjverran

• 10.8 Avg MPG

• 2018 Ram 3500

  2018 Ram 3500 Laramie
  Added Sep 2021 • 62 Fuel-ups

  Property of dr67dave

• 19.2 Avg MPG

• Adventure Hauler

  2018 Ram 3500 Promaster V6 GAS Automatic 6 Speed Extended Cargo Van
  Added Mar 2020 • 85 Fuel-ups

  Property of russberkland

• 15.7 Avg MPG

• Trailer Towing 3500

  2018 Ram 3500 Big Horn 5.7L V8 GAS Automatic 6 Speed
  Added Mar 2019 • 35 Fuel-ups

  Property of cmarkdixon

• 8.9 Avg MPG

• Adventure Hauler

  2018 Ram 3500 Promaster V6 GAS Automatic 6 Speed Extended Cargo Van
  Added Apr 2018 • 84 Fuel-ups

  Property of russberkland

• 15.8 Avg MPG

• 18 Ram Megacab Dually AISIN

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed Crew Cab Pickup
  Added Mar 2019 • 46 Fuel-ups

  Property of texasMC

• 14.1 Avg MPG

• My 3500 92 Octane Non-Ox

  2018 Ram 3500 Laramie Limited 6.4L V8 GAS Automatic 6 Speed
  Added Feb 2020 • 3 Fuel-ups

  Property of THCrash

• 11.2 Avg MPG

• My 3500

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Mar 2019 • 63 Fuel-ups

  Property of DarrenVehicles

• 14.3 Avg MPG

• My 3500 89 Octane

  2018 Ram 3500 Laramie 6.4L V8 GAS Automatic 6 Speed
  Added Jan 2020 • 6 Fuel-ups

  Property of THCrash

• 11.2 Avg MPG

• My 3500

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Jul 2019 • 30 Fuel-ups

  Property of ecarroll

• 14.2 Avg MPG

• My 3500

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Apr 2019 • 56 Fuel-ups

  Property of W3stCoast

• 16.5 Avg MPG

• 2018 Ram

  2018 Ram 3500
  Added Jan 2018 • 148 Fuel-ups

  Property of clay7331

• 17.4 Avg MPG

• 3500 Mega Cab

  2018 Ram 3500 Laramie 6.7L L6 DIESEL Automatic 6 Speed
  Added Oct 2019 • 4 Fuel-ups

  Property of chasintrane

• 12.5 Avg MPG

• RAM 3500, 3.73:1

  2018 Ram 3500 Big Horn 6.7L L6 DIESEL Automatic 6 Speed
  Added Apr 2018 • 38 Fuel-ups

  Property of bmcd

• 11.1 Avg MPG

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