1988 GMC C3500 MPG

Based on data from 1 vehicles, 44 fuel-ups and 6,921 miles of driving, the 1988 GMC C3500 gets a combined Avg MPG of 7.04 with a 0.32 MPG margin of error.

Below you can see a distribution of the fuel-ups with 2 outliers (4.35%) removed.

1988 GMC C3500s For Sale Nearby

  • Dually

    1988 GMC C3500 Sierra SLE 7.4L V8 GAS Automatic 3 Speed Standard Cab Pickup
    Added Sep 2014 • 52 Fuel-ups

    Property of scainbestone

  • 7.2 Avg MPG

Recent Activity

from other GMC C3500 vehicles (View All)

Tips

Buy the proper octane for your vehicle

Contrary to popular belief more octane doesn't make your eng... ...

by bates

Read more tips