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1978 GMC C15 MPG

Based on data from 3 vehicles, 44 fuel-ups and 4,300 miles of driving, the 1978 GMC C15 gets a combined Avg MPG of 10.03 with a 0.84 MPG margin of error.

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

Following shows the average MPG of each of the 3 vehicles in the system.

1978 GMC C15s For Sale Nearby

  • Power Wagon

    1978 GMC C15 Heavy Half 5.0L V8 GAS Automatic 4 Speed Standard Cab Pickup
    Added May 2013 • 13 Fuel-ups

    Property of citylies

  • 8.4 Avg MPG
  • 1978 Sierra Classic

    1978 GMC C15 Sierra Classic 5.7L V8 GAS Automatic 3 Speed Standard Cab Pickup
    Added Oct 2017 • 25 Fuel-ups

    Property of matthewmark25

  • 10.6 Avg MPG
  • Half Ton

    1978 GMC C15 5.0L V8 GAS Standard 3 Speed Standard Cab Pickup
    Added Feb 2015 • 11 Fuel-ups

    Property of Cadha13

  • 10.8 Avg MPG

Tips

shift points

when driving, typically, try to shift under or at 2000 rpms.... ...

by beastlytaco

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