Based on data from 18 vehicles, 1,566 fuel-ups and 385,527 miles of driving, the 1997 Mercury Grand Marquis gets a combined Avg MPG of 18.21 with a 0.22 MPG margin of error.

Any Engine Type 4.6L V8 GAS (14) GAS (1) V8 GAS (3) Any Body Style Sedan (4) Any Submodel GS (6) LS (8) Other (4)

Below you can see a distribution of the fuel-ups with 10 outliers (0.63%) removed.

Following shows the average MPG of each of the 18 vehicles in the system.

• Biz Marquis

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
  Added Nov 2022 • 78 Fuel-ups

  Property of rnovicki

• 11.4 Avg MPG

• Car

  1997 Mercury Grand Marquis LS 4.6L GAS V8 Automatic 4 Sedan (4 Door)
  Added Jun 2015 • 174 Fuel-ups

  Property of Chico-malo

• 17.1 Avg MPG

• 1997 Mercury Grand Marquis LS

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed Sedan
  Added Oct 2015 • 37 Fuel-ups

  Property of SangChu2020

• 16.5 Avg MPG

• Cisco

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
  Added Jul 2017 • 318 Fuel-ups

  Property of Bellwestern80

• 19.2 Avg MPG

• The Green Machine

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed Sedan
  Added Feb 2016 • 390 Fuel-ups

  Property of schneidly

• 21.4 Avg MPG

• X - Grand Marqius

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 228 Fuel-ups

  Property of kwfors

• 17.1 Avg MPG

• Grand Marquis

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed
  Added Feb 2019 • 3 Fuel-ups

  Property of gjalxndr

• 15.8 Avg MPG

• My Grand Marquis

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed
  Added May 2016 • 5 Fuel-ups

  Property of BrockWalls

• 20.4 Avg MPG

• My Grand Marquis

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
  Added May 2017 • 78 Fuel-ups

  Property of BCCarty85

• 17.4 Avg MPG

• Green Weenie

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed Sedan
  Added Apr 2018 • 30 Fuel-ups

  Property of Da232

• 18.2 Avg MPG

• My Grand Marquis

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 20 Fuel-ups

  Property of ssivl249

• 17.3 Avg MPG

• Scott's Car

  1997 Mercury Grand Marquis LS 4.6L V8 GAS Automatic 4 Speed
  Added Jan 2017 • 295 Fuel-ups

  Property of scooter1964

• 18.6 Avg MPG

• White Mercury

  1997 Mercury Grand Marquis LS 4.6L GAS V8 Automatic 4 Sedan (4 Door)
  Added Jun 2015 • 4 Fuel-ups

  Property of jmr5d

• 21.4 Avg MPG

• green taxi

  1997 Mercury Grand Marquis GAS V8
  Added Dec 2013 • 5 Fuel-ups

  Property of 312necro213

• 9.8 Avg MPG

• The Boat

  1997 Mercury Grand Marquis GAS
  Added Nov 2012 • 27 Fuel-ups

  Property of mikecerni

• 18.1 Avg MPG

• Mercury Grand Marquis

  1997 Mercury Grand Marquis GS 4.6L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 6 Fuel-ups

  Property of edgarortiz

• 18.5 Avg MPG

• My Dark Blue Mercury Gas Hog!

  1997 Mercury Grand Marquis GAS V8
  Added Aug 2011 • 24 Fuel-ups

  Property of n9ntm

• 15.4 Avg MPG

• red GS

  1997 Mercury Grand Marquis GAS V8
  Added Aug 2008 • 33 Fuel-ups

  Property of Roger770

• 17.3 Avg MPG