Based on data from 66 vehicles, 5,677 fuel-ups and 1,817,078 miles of driving, the 2003 Chevrolet Avalanche 1500 gets a combined Avg MPG of 13.87 with a 0.07 MPG margin of error.

Any Engine Type 5.3L V8 GAS (52) V8 GAS (13) Any Body Style Crew Cab Pickup (21) Cab & Chassis - Crew Cab (2) Any Submodel North Face (2) On Road Edition (3) Base (16) Z71 (31) Other (14)

Below you can see a distribution of the fuel-ups with 202 outliers (3.44%) removed.

Following shows the average MPG of each of the 66 vehicles in the system.

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• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Cab & Chassis - Crew Cab
  Added Mar 2017 • 177 Fuel-ups

  Property of Quentin78

• 13.0 Avg MPG

• Avy

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Dec 2017 • 103 Fuel-ups

  Property of shawnsteiner

• 14.8 Avg MPG

• ‘03 Chevy Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 241 Fuel-ups

  Property of thisisjonathonm

• 12.6 Avg MPG

• My Avalanche 1500

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2020 • 5 Fuel-ups

  Property of cmeagher

• 12.7 Avg MPG

• Chevrolet Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2017 • 16 Fuel-ups

  Property of prichard

• 25.3 Avg MPG

• 2003 Chevy Avalanche

  2003 Chevrolet Avalanche 1500 On Road Edition 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 561 Fuel-ups

  Property of handyannie

• 5.5 Avg MPG

• Truck

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2017 • 146 Fuel-ups

  Property of korey937

• 11.7 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Sep 2017 • 165 Fuel-ups

  Property of dasny97

• 11.7 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2015 • 113 Fuel-ups

  Property of quacketj

• 14.0 Avg MPG

• Bumblebee

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Oct 2017 • 226 Fuel-ups

  Property of frito

• 14.1 Avg MPG

• Red

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed Crew Cab Pickup
  Added Aug 2018 • 152 Fuel-ups

  Property of varmenta73

• 14.8 Avg MPG

• Chevrolet Avalanche 2003

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 322 Fuel-ups

  Property of ktrif

• 13.2 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 GAS V8
  Added Apr 2013 • 43 Fuel-ups

  Property of trx

• 13.1 Avg MPG

• My Avalanche 1500

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added May 2019 • 21 Fuel-ups

  Property of Tmc777

• 12.1 Avg MPG

• Hatcher

  2003 Chevrolet Avalanche 1500 Z71 5.3L V8 GAS Automatic 4 Speed
  Added Jan 2020 • 22 Fuel-ups

  Property of iluvtrble

• 13.3 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 163 Fuel-ups

  Property of V3rmiciousKnid

• 14.7 Avg MPG

• Avalanche

  2003 Chevrolet Avalanche 1500 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2016 • 173 Fuel-ups

  Property of danblosch

• 12.9 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

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