Click here to see important news regarding the aCar App

1975 GMC C15 MPG

Based on data from 1 vehicles, 123 fuel-ups and 18,647 miles of driving, the 1975 GMC C15 gets a combined Avg MPG of 10.13 with a 0.19 MPG margin of error.

Below you can see a distribution of the fuel-ups with 1 outliers (0.81%) removed.

1975 GMC C15s For Sale Nearby

  • Truck

    1975 GMC C15 Sierra Grande 5.7L V8 GAS Automatic 3 Speed
    Added Sep 2016 • 131 Fuel-ups

    Property of tenglert

  • 10.4 Avg MPG

Recent Activity

from other GMC C15 vehicles (View All)


Keep that diesel fuel tank full

Diesel fuel is highly hygroscopic. That means it sucks moist... ...

by Magalicious

Read more tips