Based on data from 27 vehicles, 1,943 fuel-ups and 375,881 miles of driving, the 2003 Chevrolet Blazer gets a combined Avg MPG of 16.12 with a 0.11 MPG margin of error.

Any Engine Type 4.3L V6 GAS (25) V6 GAS (2) Any Body Style Sport Utility (5) Any Submodel ZR2 (1) Xtreme (2) LS (22) Other (2)

Below you can see a distribution of the fuel-ups with 70 outliers (3.48%) removed.

Following shows the average MPG of each of the 27 vehicles in the system.

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• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Feb 2025 • 15 Fuel-ups

  Property of bborah

• 15.9 Avg MPG

• The Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed Sport Utility
  Added Jul 2022 • 282 Fuel-ups

  Property of Nate2003

• 17.4 Avg MPG

• Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed Sport Utility
  Added Nov 2022 • 241 Fuel-ups

  Property of framptoncomesalive

• 17.6 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Feb 2023 • 18 Fuel-ups

  Property of Vman15

• 8.5 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Dec 2024 • 16 Fuel-ups

  Property of LMG8807

• 12.6 Avg MPG

• My Blazer

  2003 Chevrolet Blazer Xtreme 4.3L V6 GAS Automatic 4 Speed
  Added Aug 2022 • 26 Fuel-ups

  Property of Trevor403

• 18.2 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Oct 2020 • 106 Fuel-ups

  Property of tjbytheway

• 15.4 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Aug 2020 • 68 Fuel-ups

  Property of techv76

• 12.3 Avg MPG

• Chad Mallory

  2003 Chevrolet Blazer Xtreme 4.3L V6 GAS Automatic 4 Speed Sport Utility
  Added Jul 2018 • 850 Fuel-ups

  Property of Cmallory183

• 13.7 Avg MPG

• Reese

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 251 Fuel-ups

  Property of Bmore410

• 16.8 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Nov 2018 • 4 Fuel-ups

  Property of quazzlebazzle

• 12.8 Avg MPG

• 2003 Chevrolet Blazer LS

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed Sport Utility
  Added Jan 2016 • 195 Fuel-ups

  Property of doctorfeelgood

• 17.7 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Nov 2016 • 57 Fuel-ups

  Property of BigAl07

• 17.9 Avg MPG

• ZR2 Blazer

  2003 Chevrolet Blazer ZR2 4.3L V6 GAS Standard 5 Speed
  Added Mar 2017 • 21 Fuel-ups

  Property of showt1me2000

• 13.9 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Jul 2017 • 3 Fuel-ups

  Property of pipgras

• 15.2 Avg MPG

• 2003 Chevy Blazer - Dads

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Jun 2017 • 20 Fuel-ups

  Property of Jaimi143

• 13.3 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L GAS V6 Automatic 4 Sport Utility (4 Door)
  Added Apr 2015 • 83 Fuel-ups

  Property of mphitch

• 16.3 Avg MPG

• My Blazer

  2003 Chevrolet Blazer LS 4.3L GAS V6 Automatic 4 Sport Utility (4 Door)
  Added Jun 2015 • 3 Fuel-ups

  Property of weeksnkc

• 22.4 Avg MPG

• Chris

  2003 Chevrolet Blazer LS 4.3L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 203 Fuel-ups

  Property of chrisayoung77

• 17.5 Avg MPG

• Blazer

  2003 Chevrolet Blazer LS 4.3L GAS V6 Automatic 4 Sport Utility (4 Door)
  Added May 2013 • 38 Fuel-ups

  Property of Rappayakkah

• 16.7 Avg MPG

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