Based on data from 72 vehicles, 7,478 fuel-ups and 2,261,637 miles of driving, the 2003 Chevrolet Avalanche 1500 gets a combined Avg MPG of 13.71 with a 0.07 MPG margin of error.

Any Engine Type 5.3L V8 GAS (58) V8 GAS (13) Any Body Style Crew Cab Pickup (22) Cab & Chassis - Crew Cab (2) Any Submodel North Face (2) On Road Edition (3) Base (22) Z71 (31) Other (14)

Below you can see a distribution of the fuel-ups with 262 outliers (3.39%) removed.

Following shows the average MPG of each of the 72 vehicles in the system.

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• Stud Truck

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 98 Fuel-ups

  Property of rockker

• 14.1 Avg MPG

• Truck

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2017 • 149 Fuel-ups

  Property of korey937

• 11.7 Avg MPG

• Chevy Av

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Feb 2012 • 187 Fuel-ups

  Property of estebon

• 14.9 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Cab & Chassis - Crew Cab
  Added Mar 2017 • 184 Fuel-ups

  Property of Quentin78

• 12.7 Avg MPG

• ‘03 Chevy Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 254 Fuel-ups

  Property of thisisjonathonm

• 12.6 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 177 Fuel-ups

  Property of danblosch

• 13.1 Avg MPG

• Chevrolet Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2017 • 17 Fuel-ups

  Property of prichard

• 23.9 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Feb 2021 • 363 Fuel-ups

  Property of texasavy

• 13.5 Avg MPG

• My Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2020 • 6 Fuel-ups

  Property of seaplane1

• 21.7 Avg MPG

• Chevrolet Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jul 2019 • 32 Fuel-ups

  Property of heyzeusc

• 14.4 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2015 • 8 Fuel-ups

  Property of biprincessTx

• 32.0 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Jan 2023 • 358 Fuel-ups

  Property of texasavy

• 13.6 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2018 • 58 Fuel-ups

  Property of aray456

• 16.4 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2017 • 40 Fuel-ups

  Property of der1245

• 13.6 Avg MPG

• '03 Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2020 • 290 Fuel-ups

  Property of Utbigrod

• 17.2 Avg MPG

• Roho

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Mar 2014 • 41 Fuel-ups

  Property of shepral

• 15.1 Avg MPG

• Chevy Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 427 Fuel-ups

  Property of AutoTracker

• 17.6 Avg MPG

• My Avalanche 1500

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added May 2016 • 106 Fuel-ups

  Property of Marspeed

• 12.7 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 On Road Edition 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2018 • 107 Fuel-ups

  Property of TerminalTrucks

• 15.9 Avg MPG

• My Avalanche 1500

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Jul 2018 • 65 Fuel-ups

  Property of Tedge136

• 11.2 Avg MPG

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