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GMC S15 Pickup MPG

EPA fuel economy for 66 GMC S15 Pickup trims sold from 1984 to 1990. Best ever: 29 MPG (1984 S15 Pickup 2WD). Latest model year 1990: 16 to 22 MPG combined across 7 trims.

29best combined MPG (1984)
26 / 32city / highway of the best trim
16lowest combined MPG (1990)
7model years rated
$2,840a year to fuel, cheapest 1990 trim at EPA prices

GMC S15 Pickup fuel cost calculator

Enter what you pay for fuel and how far you drive in a year. The starting prices are the ones the EPA uses for its own yearly fuel-cost estimates. Every cost on this page updates as you type.

At $4.16 a gallon for regular and 15,000 miles a year, the cheapest 1990 GMC S15 Pickup to fuel is the S15 Pickup 2WD, 2.5 L, 4 cyl (22 MPG) at $2,840 a year. The S15 Pickup 4WD, 4.3 L, 6 cyl (16 MPG) costs $3,900, so the thriftier trim saves $1,060 a year and $5,300 over five years.

1990 trimEngineTransmissionDriveFuelCombCost/yrvs cheapest
S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular22$2,840cheapest
S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular21$2,970+$140
S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular19$3,280+$450
S15 Pickup 2WD4.3 L, 6 cylAuto 4-spdRWDRegular18$3,470+$630
S15 Pickup 2WD4.3 L, 6 cylManual 5-spdRWDRegular18$3,470+$630
S15 Pickup 4WD4.3 L, 6 cylAuto 4-spd4WD/AWDRegular17$3,670+$830
S15 Pickup 4WD4.3 L, 6 cylManual 5-spd4WD/AWDRegular16$3,900+$1,060

Cost per year is miles per year divided by the EPA combined rating, times your fuel price; electric vehicles use the EPA's kWh per 100 miles instead. Rounded to the nearest $10. Your prices are kept in this browser only.

GMC S15 Pickup MPG by year

YearBest combinedCityHwyBest trim that yearTrims
1990222125S15 Pickup 2WD, 2.5 L, 4 cyl, Manual 5-spd7
1989222024S15 Pickup 2WD, 2.5 L, 4 cyl, Manual 5-spd7
1988232127S15 Pickup 2WD, 2.5 L, 4 cyl, Manual 5-spd6
1987222026S15 Pickup 2WD, 2.5 L, 4 cyl, Manual 5-spd8
1986242128S15 Pickup 2WD, 2.5 L, 4 cyl, Manual 5-spd6
1985282631S15 Pickup 2WD, 2.2 L, 4 cyl, Diesel, Manual 4-spd14
1984292632S15 Pickup 2WD, 2.2 L, 4 cyl, Diesel, Manual 5-spd18

Every GMC S15 Pickup trim

YearTrimEngineTransmissionDriveFuelCityHwyCombCO2 g/miFuel cost/yr
1990S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular212522404$2,840
1990S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular182521423$2,970
1990S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular172419468$3,280
1990S15 Pickup 2WD4.3 L, 6 cylAuto 4-spdRWDRegular162218494$3,470
1990S15 Pickup 2WD4.3 L, 6 cylManual 5-spdRWDRegular152218494$3,470
1990S15 Pickup 4WD4.3 L, 6 cylAuto 4-spd4WD/AWDRegular152017523$3,670
1990S15 Pickup 4WD4.3 L, 6 cylManual 5-spd4WD/AWDRegular151916555$3,900
1989S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular202422404$2,840
1989S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular182621423$2,970
1989S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular172419468$3,280
1989S15 Pickup 2WD4.3 L, 6 cylAuto 4-spdRWDRegular162218494$3,470
1989S15 Pickup 4WD2.8 L, 6 cylManual 5-spd4WD/AWDRegular162218494$3,470
1989S15 Pickup 4WD4.3 L, 6 cylAuto 4-spd4WD/AWDRegular152017523$3,670
1989S15 Pickup 4WD4.3 L, 6 cylAuto 4-spd4WD/AWDRegular152017523$3,670
1988S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular212723386$2,710
1988S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular182621423$2,970
1988S15 Pickup 2WD2.8 L, 6 cylManual 4-spdRWDRegular172319468$3,280
1988S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular172419468$3,280
1988S15 Pickup 2WD2.8 L, 6 cylAuto 4-spdRWDRegular152318494$3,470
1988S15 Pickup 2WD4.3 L, 6 cylAuto 4-spdRWDRegular162218494$3,470
1987S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular202622404$2,840
1987S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular182521423$2,970
1987S15 Pickup 2WD2.5 L, 4 cylManual 4-spdRWDRegular192421423$2,970
1987S15 Pickup 2WD2.5 L, 4 cylAuto 3-spdRWDRegular182220444$3,120
1987S15 Pickup 2WD2.8 L, 6 cylAuto 4-spdRWDRegular152218494$3,470
1987S15 Pickup 2WD2.8 L, 6 cylManual 4-spdRWDRegular162118494$3,470
1987S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular162218494$3,470
1987S15 Pickup 2WD2.8 L, 6 cylAuto 3-spdRWDRegular151816555$3,900
1986S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular212824370$2,600
1986S15 Pickup 2WD2.5 L, 4 cylManual 4-spdRWDRegular202522404$2,840
1986S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular192621423$2,970
1986S15 Pickup 2WD2.8 L, 6 cylAuto 4-spdRWDRegular162118494$3,470
1986S15 Pickup 2WD2.8 L, 6 cylManual 4-spdRWDRegular162118494$3,470
1986S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular152218494$3,470
1985S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 4-spdRWDDiesel263128364$3,200
1985S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 5-spdRWDDiesel263328364$3,200
1985S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 4-spdRWDDiesel263027377$3,320
1985S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 5-spdRWDDiesel253027377$3,320
1985S15 Pickup 2WD1.9 L, 4 cylManual 4-spdRWDRegular212723386$2,710
1985S15 Pickup 2WD2.5 L, 4 cylManual 5-spdRWDRegular202622404$2,840
1985S15 Pickup 2WD2.5 L, 4 cylAuto 4-spdRWDRegular182521423$2,970
1985S15 Pickup 2WD2.5 L, 4 cylManual 4-spdRWDRegular192421423$2,970
1985S15 Pickup 2WD2.8 L, 6 cylAuto 4-spdRWDRegular172319468$3,280
1985S15 Pickup 2WD2.8 L, 6 cylManual 4-spdRWDRegular172319468$3,280
1985S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular162319468$3,280
1985S15 Pickup 2WD2.8 L, 6 cylManual 4-spdRWDRegular162319468$3,280
1985S15 Pickup 2WD2.8 L, 6 cylAuto 4-spdRWDRegular152218494$3,470
1985S15 Pickup 2WD2.8 L, 6 cylManual 5-spdRWDRegular152318494$3,470
1984S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 5-spd2WDDiesel263229351$3,090
1984S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 4-spd2WDDiesel263128364$3,200
1984S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 4-spd2WDDiesel263128364$3,200
1984S15 Pickup 2WD2.2 L, 4 cyl, DieselManual 5-spd2WDDiesel263128364$3,200
1984S15 Pickup 2WD2.0 L, 4 cylManual 5-spd2WDRegular233126342$2,400
1984S15 Pickup 2WD2.0 L, 4 cylManual 4-spd2WDRegular212924370$2,600
1984S15 Pickup 2WD2.0 L, 4 cylManual 4-spd2WDRegular212623386$2,710
1984S15 Pickup 2WD2.0 L, 4 cylManual 5-spd2WDRegular202723386$2,710
1984S15 Pickup 2WD2.0 L, 4 cylManual 5-spd2WDRegular202622404$2,840
1984S15 Pickup 2WD2.0 L, 4 cylManual 4-spd2WDRegular192521423$2,970
1984S15 Pickup 2WD2.0 L, 4 cylAuto 4-spd2WDRegular182420444$3,120
1984S15 Pickup 2WD2.0 L, 4 cylAuto 3-spd2WDRegular182420444$3,120
1984S15 Pickup 2WD2.8 L, 6 cylAuto 4-spd2WDRegular172419468$3,280
1984S15 Pickup 2WD2.8 L, 6 cylManual 5-spd2WDRegular162319468$3,280
1984S15 Pickup 2WD2.8 L, 6 cylAuto 4-spd2WDRegular162218494$3,470
1984S15 Pickup 2WD2.8 L, 6 cylManual 4-spd2WDRegular162118494$3,470
1984S15 Pickup 2WD2.8 L, 6 cylManual 5-spd2WDRegular162218494$3,470
1984S15 Pickup 2WD2.8 L, 6 cylManual 4-spd2WDRegular162218494$3,470

CO2 is tailpipe grams per mile from the EPA test. Fuel cost per year uses the prices and miles in the calculator above (the EPA's own prices and 15,000 miles a year until you change them); blank when the fuel has no price here (hydrogen, natural gas).

Compare with other 1990 Small Pickup Trucks

VehicleCombinedCityHwy
1990 Ford Ranger Pickup 2WD232126
1990 Chevrolet S10 Pickup 2WD222125
1990 Nissan Hardbody 2WD222025
1990 Isuzu Pickup 2WD201922
1990 Dodge Ram 50 Pickup 2WD191722
1990 Mitsubishi Truck 2WD191722

All Small Pickup Trucks ranked by MPG

Questions people ask

What is the best MPG for a GMC S15 Pickup?

The most efficient GMC S15 Pickup the EPA has rated is the 1984 S15 Pickup 2WD at 29 MPG combined (26 city, 32 highway).

What MPG does the 1990 GMC S15 Pickup get?

1990 GMC S15 Pickup trims range from 16 to 22 MPG combined, depending on engine, transmission and drivetrain.

Which GMC S15 Pickup has the worst fuel economy?

The 1990 S15 Pickup 4WD is the lowest rated at 16 MPG combined.

How much does it cost to fuel a GMC S15 Pickup for a year?

At $4.16 a gallon for regular and 15,000 miles a year, the cheapest 1990 GMC S15 Pickup to fuel is the S15 Pickup 2WD, 2.5 L, 4 cyl (22 MPG) at $2,840 a year. The S15 Pickup 4WD, 4.3 L, 6 cyl (16 MPG) costs $3,900, so the thriftier trim saves $1,060 a year and $5,300 over five years.

More from GMC: every GMC model. Fuel types on this model: Diesel, Regular. EPA classes: Small Pickup Trucks, Small Pickup Trucks 2WD, Standard Pickup Trucks.