Based on data from 31 vehicles, 2,371 fuel-ups and 591,443 miles of driving, the 1999 Buick Century gets a combined Avg MPG of 22.41 with a 0.17 MPG margin of error.

Any Engine Type 3.1L V6 GAS (20) V6 GAS (8) Any Body Style Sedan (11) Any Submodel Limited (4) Custom (17) Other (10)

Below you can see a distribution of the fuel-ups with 54 outliers (2.23%) removed.

Following shows the average MPG of each of the 31 vehicles in the system.

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• The Green Guppy

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Mar 2023 • 169 Fuel-ups

  Property of TFine

• 24.6 Avg MPG

• Buick

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2017 • 322 Fuel-ups

  Property of rabbit718

• 19.0 Avg MPG

• Bob Seger

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Dec 2022 • 38 Fuel-ups

  Property of JasonTheH

• 21.2 Avg MPG

• My Century

  1999 Buick Century Limited 3.1L V6 GAS Automatic 4 Speed
  Added Dec 2023 • 51 Fuel-ups

  Property of jmbolson

• 22.0 Avg MPG

• Mary's Car

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2021 • 8 Fuel-ups

  Property of Hexonoid

• 25.8 Avg MPG

• Buick Century

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Mar 2018 • 430 Fuel-ups

  Property of russell11110

• 23.8 Avg MPG

• My Century

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Jan 2016 • 41 Fuel-ups

  Property of panama

• 37.6 Avg MPG

• Buick Century

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 314 Fuel-ups

  Property of Chamberlin

• 22.0 Avg MPG

• Buick Beater

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2012 • 116 Fuel-ups

  Property of twinjracing

• 25.7 Avg MPG

• Bu Bu

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2016 • 78 Fuel-ups

  Property of dvsix

• 25.7 Avg MPG

• 99 Buick Century

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Feb 2015 • 13 Fuel-ups

  Property of mjh8812

• 23.5 Avg MPG

• Buick

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 111 Fuel-ups

  Property of Laurencevooys

• 22.3 Avg MPG

• My Century

  1999 Buick Century Custom
  Added May 2016 • 3 Fuel-ups

  Property of flex1200

• 26.1 Avg MPG

• lucky old man

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2013 • 117 Fuel-ups

  Property of GVB

• 21.3 Avg MPG

• 99 Buick

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Feb 2019 • 114 Fuel-ups

  Property of jasteiner

• 22.3 Avg MPG

• Buick Century v2

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 126 Fuel-ups

  Property of mdhoward

• 23.9 Avg MPG

• The Buick

  1999 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2014 • 163 Fuel-ups

  Property of Pwnerast

• 21.1 Avg MPG

• THE Green Machine

  1999 Buick Century Limited 3.1L GAS V6 Automatic 4 Sedan (4 Door)
  Added Aug 2014 • 5 Fuel-ups

  Property of The_Green_Machine

• 17.2 Avg MPG

• The green machine

  1999 Buick Century Limited 3.1L GAS V6 Automatic 4 Sedan (4 Door)
  Added Jul 2014 • 5 Fuel-ups

  Property of The_Green_Machine

• 17.5 Avg MPG

• The Buick

  1999 Buick Century GAS V6
  Added Jan 2014 • 9 Fuel-ups

  Property of 2006Rebel

• 24.7 Avg MPG

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