Based on data from 27 vehicles, 1,774 fuel-ups and 510,035 miles of driving, the 2003 Chevrolet Monte Carlo gets a combined Avg MPG of 23.28 with a 0.22 MPG margin of error.

Any Engine Type 3.4L V6 GAS (6) 3.8L V6 GAS (12) V6 GAS (8) Any Body Style Coupe (3) Any Submodel SS High Sport (1) LS (6) SS (11) Other (9)

Below you can see a distribution of the fuel-ups with 28 outliers (1.55%) removed.

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

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• 03 Monte Carlo

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Oct 2024 • 3 Fuel-ups

  Property of NoLimits

• 26.7 Avg MPG

• Monte

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Apr 2017 • 305 Fuel-ups

  Property of 84car

• 19.9 Avg MPG

• My Monte Carlo

  2003 Chevrolet Monte Carlo LS 3.4L V6 GAS Automatic 4 Speed
  Added Jul 2021 • 54 Fuel-ups

  Property of jacobgranger

• 24.2 Avg MPG

• 2003 Monte Carlo

  2003 Chevrolet Monte Carlo LS 3.4L V6 GAS Automatic 4 Speed
  Added Aug 2018 • 37 Fuel-ups

  Property of nickstick11

• 23.9 Avg MPG

• Monte Carlo 2018

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Nov 2017 • 54 Fuel-ups

  Property of JohnGalt60

• 21.4 Avg MPG

• DA MCC 1

  2003 Chevrolet Monte Carlo LS 3.4L V6 GAS Automatic 4 Speed
  Added Jun 2013 • 257 Fuel-ups

  Property of dmcconaha

• 28.6 Avg MPG

• My Monte Carlo

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added May 2017 • 58 Fuel-ups

  Property of hugheyb95

• 21.9 Avg MPG

• black's best

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Coupe (2 Door)
  Added Sep 2011 • 255 Fuel-ups

  Property of judynila

• 21.4 Avg MPG

• Rosey

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2017 • 25 Fuel-ups

  Property of ruffyworld

• 20.7 Avg MPG

• Monte Carlo 2017

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Nov 2016 • 38 Fuel-ups

  Property of JohnGalt60

• 22.3 Avg MPG

• The Terrain

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 295 Fuel-ups

  Property of OilManIzzy

• 22.5 Avg MPG

• Monte Carlo SS

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 71 Fuel-ups

  Property of MotorHeadLS85

• 24.7 Avg MPG

• MonteSS

  2003 Chevrolet Monte Carlo SS High Sport 3.8L V6 GAS Automatic 4 Speed Coupe
  Added Apr 2014 • 172 Fuel-ups

  Property of hagensen

• 28.3 Avg MPG

• The Monte

  2003 Chevrolet Monte Carlo LS 3.4L V6 GAS Automatic 4 Speed Coupe
  Added Feb 2010 • 224 Fuel-ups

  Property of ChevyGuy454

• 25.2 Avg MPG

• Monte Carlo SS

  2003 Chevrolet Monte Carlo SS 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 139 Fuel-ups

  Property of LordCosmo

• 26.0 Avg MPG

• Silver

  2003 Chevrolet Monte Carlo LS 3.4L V6 GAS
  Added Oct 2013 • 41 Fuel-ups

  Property of squareball

• 26.3 Avg MPG

• Silver bullet

  2003 Chevrolet Monte Carlo GAS V6
  Added Oct 2013 • 6 Fuel-ups

  Property of rmcg95

• 15.6 Avg MPG

• shiela

  2003 Chevrolet Monte Carlo
  Added Sep 2013 • 24 Fuel-ups

  Property of zack2442

• 22.7 Avg MPG

• The Monte

  2003 Chevrolet Monte Carlo GAS V6
  Added Jun 2013 • 18 Fuel-ups

  Property of ttc8v9

• 22.5 Avg MPG

• My Car

  2003 Chevrolet Monte Carlo GAS V6
  Added Nov 2012 • 16 Fuel-ups

  Property of Goat2448

• 23.1 Avg MPG

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