Based on data from 26 vehicles, 1,291 fuel-ups and 297,268 miles of driving, the 1999 Buick Regal gets a combined Avg MPG of 19.98 with a 0.26 MPG margin of error.

Any Engine Type 3.8L V6 GAS (16) GAS (1) V6 GAS (8) Any Body Style Sedan (6) Any Submodel GS (4) LS (12) Other (10)

Below you can see a distribution of the fuel-ups with 74 outliers (5.42%) removed.

Following shows the average MPG of each of the 26 vehicles in the system.

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• My Regal

  1999 Buick Regal LSE Automatic 4 Speed
  Added Apr 2023 • 82 Fuel-ups

  Property of emanuel_moreno

• 18.4 Avg MPG

• 99 Regal

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Oct 2024 • 4 Fuel-ups

  Property of bigtitsmcgee

• 21.9 Avg MPG

• Regal

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Jul 2021 • 26 Fuel-ups

  Property of Fonger

• 75.8 Avg MPG

• Jean

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 159 Fuel-ups

  Property of MeStitch

• 20.7 Avg MPG

• Buick

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2018 • 64 Fuel-ups

  Property of ryan01

• 21.7 Avg MPG

• 1999 Regal

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Jul 2013 • 129 Fuel-ups

  Property of mrbrianwc

• 21.0 Avg MPG

• My Black Regal

  1999 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2016 • 37 Fuel-ups

  Property of mjjacks

• 17.2 Avg MPG

• TheBuAck

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Nov 2015 • 76 Fuel-ups

  Property of TheBuAck

• 20.7 Avg MPG

• My Regal

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Jan 2017 • 8 Fuel-ups

  Property of bosshardd81

• 15.6 Avg MPG

• Grandma

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 56 Fuel-ups

  Property of RoadTrippinMeisters

• 28.5 Avg MPG

• Edwin Buick Regal LS

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 222 Fuel-ups

  Property of DeaconEdwin

• 21.1 Avg MPG

• Not Your Father's

  1999 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2016 • 79 Fuel-ups

  Property of 95crackedhead

• 20.9 Avg MPG

• Regal

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Mar 2021 • 91 Fuel-ups

  Property of jdh50

• 19.4 Avg MPG

• Edwin Buick Regal LS

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Aug 2016 • 127 Fuel-ups

  Property of DeaconEdwin

• 23.1 Avg MPG

• 1999 Buick Regal GS "Ibuck"

  1999 Buick Regal GAS
  Added May 2014 • 3 Fuel-ups

  Property of TavshedFjols

• 13.4 Avg MPG

• Buick Regal

  1999 Buick Regal GAS V6
  Added May 2014 • 9 Fuel-ups

  Property of heller213

• 26.5 Avg MPG

• Buick Regal

  1999 Buick Regal GAS V6
  Added Jul 2013 • 4 Fuel-ups

  Property of redfox

• 30.8 Avg MPG

• 901 Buick

  1999 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed
  Added May 2016 • 49 Fuel-ups

  Property of dtesta

• 27.5 Avg MPG

• Blue Beast

  1999 Buick Regal GAS V6
  Added Dec 2012 • 30 Fuel-ups

  Property of 95crackedhead

• 21.2 Avg MPG

• Regal Beagle

  1999 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed
  Added Sep 2016 • 71 Fuel-ups

  Property of dan946

• 26.1 Avg MPG

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