1999 GMC Sierra 2500 MPG

Based on data from 7 vehicles, 199 fuel-ups and 58,550 miles of driving, the 1999 GMC Sierra 2500 gets a combined Avg MPG of 12.36 with a 0.40 MPG margin of error.

Below you can see a distribution of the fuel-ups with 22 outliers (9.95%) removed.

Following shows the average MPG of each of the 7 vehicles in the system.

• Ol Jim

  1999 GMC Sierra 2500 SLE 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Jun 2019 • 69 Fuel-ups

  Property of Gamestern269

• 15.1 Avg MPG

• My Sierra 2500

  1999 GMC Sierra 2500 SLE 6.0L V8 GAS Automatic 4 Speed
  Added Jan 2019 • 40 Fuel-ups

  Property of patsater

• 9.7 Avg MPG

• HD

  1999 GMC Sierra 2500 SLT 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Oct 2018 • 66 Fuel-ups

  Property of plugnickle

• 14.0 Avg MPG

• HD

  1999 GMC Sierra 2500 SLT 6.0L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Jun 2019 • 40 Fuel-ups

  Property of plugnickle

• 14.1 Avg MPG

• Clyde

  1999 GMC Sierra 2500 SLT 5.3L V8 GAS Automatic 4 Speed
  Added Sep 2017 • 22 Fuel-ups

  Property of cmurph314

• 11.1 Avg MPG

• My Sierra 2500

  1999 GMC Sierra 2500 SL 6.0L V8 GAS Automatic 4 Speed
  Added Jul 2017 • 4 Fuel-ups

  Property of chevyguy99

• 13.9 Avg MPG

• GMC 2500 6.0

  1999 GMC Sierra 2500 GAS V8
  Added Sep 2012 • 6 Fuel-ups

  Property of Radiantautos

• 13.6 Avg MPG