1999 GMC Sierra 1500 MPG

Based on data from 50 vehicles, 2,440 fuel-ups and 637,197 miles of driving, the 1999 GMC Sierra 1500 gets a combined Avg MPG of 13.79 with a 0.13 MPG margin of error.

Below you can see a distribution of the fuel-ups with 34 outliers (1.37%) removed.

Following shows the average MPG of each of the 50 vehicles in the system.

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• GMC

  1999 GMC Sierra 1500 Custom Submodel V8 GAS
  Added Aug 2013 • 78 Fuel-ups

  Property of seanhouston

• 13.6 Avg MPG

• ThunderBolt

  1999 GMC Sierra 1500 GAS V8
  Added Apr 2013 • 6 Fuel-ups

  Property of jj3699

• 15.8 Avg MPG

• GMC Sierra

  1999 GMC Sierra 1500 GAS V8
  Added Feb 2013 • 20 Fuel-ups

  Property of eddykc03

• 13.8 Avg MPG

• Kelso's Truck

  1999 GMC Sierra 1500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Aug 2016 • 185 Fuel-ups

  Property of kellyfthomas

• 16.7 Avg MPG

• Z71

  1999 GMC Sierra 1500 GAS V8
  Added Aug 2009 • 104 Fuel-ups

  Property of brndnws

• 15.1 Avg MPG

• Truck

  1999 GMC Sierra 1500 GAS V8
  Added Mar 2012 • 7 Fuel-ups

  Property of maybe2fast

• 15.7 Avg MPG

• 1999 GMC Sierra

  1999 GMC Sierra 1500 GAS V8
  Added Jan 2012 • 26 Fuel-ups

  Property of jwindbigler

• 14.0 Avg MPG

• The Truck

  1999 GMC Sierra 1500 GAS V8
  Added May 2010 • 32 Fuel-ups

  Property of DeChache

• 15.5 Avg MPG

• Truck

  1999 GMC Sierra 1500
  Added Aug 2008 • 124 Fuel-ups

  Property of theirdad

• 17.6 Avg MPG

• 99 GMC

  1999 GMC Sierra 1500 GAS V8
  Added Oct 2011 • 402 Fuel-ups

  Property of usmdude

• 15.4 Avg MPG

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