1991 GMC C3500 MPG

Based on data from 2 vehicles, 148 fuel-ups and 18,445 miles of driving, the 1991 GMC C3500 gets a combined Avg MPG of 9.49 with a 0.29 MPG margin of error.

Below you can see a distribution of the fuel-ups with 2 outliers (1.33%) removed.

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

• My C3500

  1991 GMC C3500 Sierra 5.7L V8 GAS Manual 5 Speed
  Added Mar 2019 • 152 Fuel-ups

  Property of wildedge93

• 9.8 Avg MPG

• Dually

  1991 GMC C3500 Sierra SLE 7.4L V8 GAS Automatic 4 Speed
  Added Mar 2017 • 10 Fuel-ups

  Property of duallydad

• 6.2 Avg MPG