Based on data from 55 vehicles, 3,010 fuel-ups and 817,546 miles of driving, the 2003 Buick Century gets a combined Avg MPG of 23.38 with a 0.18 MPG margin of error.

Any Engine Type 3.1L V6 GAS (46) GAS (1) V6 GAS (7) Any Body Style Sedan (25) Any Submodel Custom (46) Other (9)

Below you can see a distribution of the fuel-ups with 59 outliers (1.92%) removed.

Following shows the average MPG of each of the 55 vehicles in the system.

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• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Jan 2024 • 32 Fuel-ups

  Property of lekale

• 26.0 Avg MPG

• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Nov 2023 • 18 Fuel-ups

  Property of gidmschauer

• 19.1 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2017 • 127 Fuel-ups

  Property of rminkler

• 21.1 Avg MPG

• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Mar 2023 • 86 Fuel-ups

  Property of 9669257ab

• 25.6 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 89 Fuel-ups

  Property of Tardis7

• 26.4 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Jun 2023 • 8 Fuel-ups

  Property of dblumer

• 28.6 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added May 2023 • 31 Fuel-ups

  Property of jasoncollege24

• 21.0 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Dec 2019 • 97 Fuel-ups

  Property of thrasher_1969

• 23.4 Avg MPG

• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Sep 2021 • 5 Fuel-ups

  Property of steffanigreen1984

• 11.7 Avg MPG

• Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Nov 2022 • 10 Fuel-ups

  Property of memeguy

• 27.0 Avg MPG

• Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Nov 2022 • 10 Fuel-ups

  Property of kent3d

• 27.0 Avg MPG

• Louise

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2019 • 28 Fuel-ups

  Property of bwollard

• 26.1 Avg MPG

• Buick Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Aug 2018 • 9 Fuel-ups

  Property of wleeper

• 25.9 Avg MPG

• Dan's

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Nov 2016 • 215 Fuel-ups

  Property of dans316

• 19.8 Avg MPG

• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Jul 2017 • 63 Fuel-ups

  Property of sirius00

• 17.8 Avg MPG

• Whits car

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Nov 2016 • 67 Fuel-ups

  Property of wwisner

• 19.3 Avg MPG

• buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Jul 2018 • 129 Fuel-ups

  Property of Mjo36957

• 26.5 Avg MPG

• My Century

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Apr 2020 • 9 Fuel-ups

  Property of Chilli

• 37.9 Avg MPG

• Buick

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed
  Added Sep 2017 • 308 Fuel-ups

  Property of bsmith2252

• 20.0 Avg MPG

• CAR 4 SNO

  2003 Buick Century Custom 3.1L V6 GAS Automatic 4 Speed Sedan
  Added Jun 2019 • 35 Fuel-ups

  Property of viasound

• 26.6 Avg MPG

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