1999 GMC K1500 MPG

Based on data from 2 vehicles, 118 fuel-ups and 27,441 miles of driving, the 1999 GMC K1500 gets a combined Avg MPG of 12.16 with a 0.40 MPG margin of error.

Below you can see a distribution of the fuel-ups with 7 outliers (5.60%) removed.

Following shows the average MPG of each of the 2 vehicles in the system.

• GMC K1500

  1999 GMC K1500 Sierra SL 5.7L V8 GAS Automatic 4 Speed Extended Cab Pickup
  Added Jan 2018 • 114 Fuel-ups

  Property of chahta

• 12.1 Avg MPG

• My K1500

  1999 GMC K1500 Sierra SLT 5.7L V8 GAS Automatic 4 Speed
  Added Aug 2022 • 57 Fuel-ups

  Property of Blackatz

• 13.8 Avg MPG