1988 GMC S15 MPG

Based on data from 4 vehicles, 65 fuel-ups and 18,820 miles of driving, the 1988 GMC S15 gets a combined Avg MPG of 21.81 with a 0.63 MPG margin of error.

Below you can see a distribution of the fuel-ups with 12 outliers (15.58%) removed.

Following shows the average MPG of each of the 4 vehicles in the system.

• My S15

  1988 GMC S15 2.5L L4 GAS Manual 5 Speed
  Added Mar 2020 • 12 Fuel-ups

  Property of ls1says

• 22.8 Avg MPG

• Super 15

  1988 GMC S15 Sierra Classic 2.8L V6 GAS Automatic 4 Speed
  Added Aug 2018 • 13 Fuel-ups

  Property of gvettel

• 12.3 Avg MPG

• S15

  1988 GMC S15 Sierra Classic 4.3L V6 GAS Automatic 4 Speed Standard Cab Pickup
  Added Nov 2012 • 48 Fuel-ups

  Property of LazySpread

• 21.3 Avg MPG

• Betsy

  1988 GMC S15 2.5L GAS L4 Standard 5 Standard Cab Pickup (2 Door)
  Added Sep 2014 • 13 Fuel-ups

  Property of jmader

• 25.4 Avg MPG