Based on data from 17 vehicles, 478 fuel-ups and 121,727 miles of driving, the 1998 Buick Regal gets a combined Avg MPG of 20.39 with a 0.43 MPG margin of error.

Any Engine Type 3.8L V6 GAS (9) V6 GAS (8) Any Body Style Sedan (2) Any Submodel LS (2) GS (7) Other (8)

Below you can see a distribution of the fuel-ups with 9 outliers (1.85%) removed.

Following shows the average MPG of each of the 17 vehicles in the system.

• Buick Regal GS

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed
  Added Oct 2017 • 41 Fuel-ups

  Property of stg068

• 29.2 Avg MPG

• Regal GS

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Aug 2016 • 81 Fuel-ups

  Property of DaleAZ

• 15.7 Avg MPG

• Buick Regal

  1998 Buick Regal LS 3.8L V6 GAS Automatic 4 Speed Sedan
  Added Sep 2016 • 281 Fuel-ups

  Property of Regenegade

• 23.3 Avg MPG

• Regal

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed
  Added Mar 2017 • 21 Fuel-ups

  Property of Bssplyr4life

• 18.4 Avg MPG

• Regal

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Sedan (4 Door)
  Added Dec 2014 • 18 Fuel-ups

  Property of GrandPrix46

• 16.3 Avg MPG

• Regal

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed
  Added Jul 2015 • 4 Fuel-ups

  Property of Ironman933

• 23.3 Avg MPG

• GMC Sierra

  1998 Buick Regal GS 3.8L V6 GAS Automatic 4 Speed
  Added Oct 2017 • 24 Fuel-ups

  Property of stg068

• 17.2 Avg MPG

• 98 Regal

  1998 Buick Regal LS 3.8L GAS V6 Automatic 4 Sedan (4 Door)
  Added Sep 2014 • 3 Fuel-ups

  Property of SMG

• 18.6 Avg MPG

• 98 Regal

  1998 Buick Regal GS 3.8L GAS V6 Automatic 4 Sedan (4 Door)
  Added Jul 2014 • 3 Fuel-ups

  Property of hydrofenix

• 26.2 Avg MPG

• Regal

  1998 Buick Regal GAS V6
  Added Mar 2014 • 9 Fuel-ups

  Property of aenelson

• 26.5 Avg MPG

• Regal GS

  1998 Buick Regal GAS V6
  Added Dec 2013 • 3 Fuel-ups

  Property of brentsten

• 20.8 Avg MPG

• 98 Regal LS 3.8v6

  1998 Buick Regal GAS V6
  Added Apr 2013 • 6 Fuel-ups

  Property of bpalma

• 19.3 Avg MPG

• Ick

  1998 Buick Regal GAS V6
  Added Nov 2012 • 4 Fuel-ups

  Property of critter77

• 18.0 Avg MPG

• 1998 Buick Regal GS

  1998 Buick Regal GAS V6
  Added May 2010 • 47 Fuel-ups

  Property of jsgillard

• 22.5 Avg MPG

• L67

  1998 Buick Regal GAS V6
  Added Sep 2011 • 10 Fuel-ups

  Property of sob0055

• 21.3 Avg MPG

• My Boat

  1998 Buick Regal GAS V6
  Added Mar 2010 • 19 Fuel-ups

  Property of spetz

• 21.6 Avg MPG

• the beast

  1998 Buick Regal GAS V6
  Added Dec 2009 • 3 Fuel-ups

  Property of bush524

• 21.7 Avg MPG