Click here to see important news regarding the aCar App

2003 Mercury Grand Marquis MPG

Based on data from 35 vehicles, 2,299 fuel-ups and 586,642 miles of driving, the 2003 Mercury Grand Marquis gets a combined Avg MPG of 17.71 with a 0.16 MPG margin of error.

Below you can see a distribution of the fuel-ups with 73 outliers (3.08%) removed.

Following shows the average MPG of each of the 35 vehicles in the system.

2003 Mercury Grand Marquiss For Sale Nearby

  • 1
  • 2
  • »
  • Jamie Merc

    2003 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Apr 2018 • 7 Fuel-ups

    Property of ladyamalphia

  • 24.6 Avg MPG
  • Marquis

    2003 Mercury Grand Marquis LSE 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Aug 2013 • 266 Fuel-ups

    Property of IH8regs

  • 18.7 Avg MPG
  • Grandpas

    2003 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Apr 2015 • 27 Fuel-ups

    Property of Rambo032610

  • 20.2 Avg MPG
  • Mercury

    2003 Mercury Grand Marquis LSE 4.6L V8 GAS Automatic 4 Speed
    Added Mar 2017 • 340 Fuel-ups

    Property of nolafaye

  • 16.9 Avg MPG
  • Grand Marquis

    2003 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed
    Added Sep 2016 • 68 Fuel-ups

    Property of shifter

  • 21.0 Avg MPG
  • Murked

    2003 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Dec 2015 • 26 Fuel-ups

    Property of mcodeath

  • 19.4 Avg MPG
  • My Grand Marquis

    2003 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
    Added Dec 2015 • 12 Fuel-ups

    Property of defflepp1

  • 15.3 Avg MPG
  • The Tank

    2003 Mercury Grand Marquis GAS V8
    Added Jan 2014 • 39 Fuel-ups

    Property of eiskusma

  • 14.7 Avg MPG
  • Chris

    2003 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Oct 2014 • 24 Fuel-ups

    Property of drumman28

  • 18.2 Avg MPG
  • 2003 Grand Marquis LS

    2003 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed Sedan
    Added Apr 2018 • 69 Fuel-ups

    Property of ddrwilli

  • 21.5 Avg MPG
  • BulgerMerc

    2003 Mercury Grand Marquis GAS V8
    Added Jul 2013 • 20 Fuel-ups

    Property of panthermerc47

  • 21.2 Avg MPG
  • MGMLSP 4G Panther

    2003 Mercury Grand Marquis GS 4.6L V8 GAS
    Added Mar 2011 • 197 Fuel-ups

    Property of JHEATHJR

  • 19.7 Avg MPG
  • MGMLSP 4G Panther

    2003 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed
    Added May 2015 • 47 Fuel-ups

    Property of JHEATHJR2

  • 21.7 Avg MPG
  • B's Car

    2003 Mercury Grand Marquis GAS V8
    Added Aug 2008 • 3 Fuel-ups

    Property of povia

  • 18.2 Avg MPG
  • gray ghost

    2003 Mercury Grand Marquis GAS V8
    Added May 2011 • 16 Fuel-ups

    Property of chickenfoot

  • 21.3 Avg MPG
  • 1
  • 2
  • »

Recent Activity

from other Mercury Grand Marquis vehicles (View All)

Tips

cooooast

I coast all the time no dangerous hills here. Its worth an extra 50-75 per tank.

by mittzlepick

Read more tips