Based on data from 131 vehicles, 4,061 fuel-ups and 919,013 miles of driving, the 1999 Ford Mustang gets a combined Avg MPG of 19.45 with a 0.15 MPG margin of error.

Any Engine Type 3.8L V6 GAS (40) 4.6L V8 GAS (61) V6 GAS (14) V8 FLEX (1) V8 GAS (11) Any Body Style Coupe (29) Convertible (9) Any Submodel SVT Cobra (17) Base (41) GT (44) Other (29)

Below you can see a distribution of the fuel-ups with 75 outliers (1.81%) removed.

Following shows the average MPG of each of the 131 vehicles in the system.

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• My Mustang

  1999 Ford Mustang 3.8L GAS V6 Automatic 4 Coupe (2 Door)
  Added Sep 2014 • 7 Fuel-ups

  Property of DanP93

• 22.0 Avg MPG

• Silver Edge Mustang

  1999 Ford Mustang GAS V6
  Added Sep 2013 • 13 Fuel-ups

  Property of EuropaWill

• 23.4 Avg MPG

• Mustang

  1999 Ford Mustang GAS V6
  Added Feb 2009 • 166 Fuel-ups

  Property of computerguru365

• 24.7 Avg MPG

• Cobra 4.6 DOHC (stock)

  1999 Ford Mustang GAS V8
  Added Aug 2013 • 3 Fuel-ups

  Property of 929guy

• 29.8 Avg MPG

• mean green supercharged cobra

  1999 Ford Mustang
  Added Nov 2013 • 2 Fuel-ups

  Property of shoshdog

• 15.8 Avg MPG

• Silver

  1999 Ford Mustang GAS V6
  Added Sep 2008 • 165 Fuel-ups

  Property of madpark

• 19.6 Avg MPG

• 1999 Mustang

  1999 Ford Mustang GAS V6
  Added Oct 2013 • 13 Fuel-ups

  Property of sharp

• 23.9 Avg MPG

• SilverMustang35

  1999 Ford Mustang 3.8L GAS V6 Automatic 4 Coupe (2 Door)
  Added Sep 2012 • 15 Fuel-ups

  Property of SilverMustang35

• 20.1 Avg MPG

• 99 Mustang

  1999 Ford Mustang GAS V6
  Added Aug 2013 • 6 Fuel-ups

  Property of pkhoff2

• 19.4 Avg MPG

• stang

  1999 Ford Mustang GAS V6
  Added Nov 2013 • 1 Fuel-up

  Property of jennylynn221

• 49.1 Avg MPG

• 99 Mustang

  1999 Ford Mustang 3.8L V6 GAS Manual 5 Speed Coupe
  Added Jun 2020 • 43 Fuel-ups

  Property of RacingEngr

• 31.7 Avg MPG

• red slut

  1999 Ford Mustang GAS V8
  Added Nov 2013 • 1 Fuel-up

  Property of ogxxxgio

• 0.1 Avg MPG

• MY WICKED AWESOME CAR

  1999 Ford Mustang GAS V8
  Added Jul 2013 • 17 Fuel-ups

  Property of BDUB99GT

• 23.0 Avg MPG

• Sierra

  1999 Ford Mustang
  Added Jun 2013 • 9 Fuel-ups

  Property of NastyGT

• 17.0 Avg MPG

• GG

  1999 Ford Mustang GAS V6
  Added Jun 2013 • 2 Fuel-ups

  Property of jmp489

• 18.8 Avg MPG

• z Mustang Cobra

  1999 Ford Mustang SVT Cobra 4.6L V8 GAS Standard 5 Speed Coupe
  Added Apr 2018 • 59 Fuel-ups

  Property of AvidDIYer

• 20.5 Avg MPG

• Sky

  1999 Ford Mustang GAS V6
  Added Dec 2012 • 3 Fuel-ups

  Property of cyruskong1

• 14.5 Avg MPG

• The 'Stang

  1999 Ford Mustang GAS V8
  Added May 2012 • 31 Fuel-ups

  Property of ShowMeOKC

• 16.9 Avg MPG

• Mustang Cobra

  1999 Ford Mustang GAS V8
  Added Feb 2012 • 4 Fuel-ups

  Property of apking2

• 18.8 Avg MPG

• Heather

  1999 Ford Mustang 3.8L V6 GAS Automatic Coupe
  Added Oct 2017 • 10 Fuel-ups

  Property of dieselprime

• 23.6 Avg MPG

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