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GMC · model year 1984

1984 GMC S15 Pickup 2WD

Pickup · 2-Wheel Drive · Gas · EPA class: Small Pickup Trucks 2WD

EPA figures · 1984fueleconomy.gov
23MPG combined
21/26MPG city / highway
$2,900fuel a year
386 g CO₂ per mile 2.0 L 4-cyl Manual 4-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.

Where it places

The CarCody take

The 1984 GMC S15 Pickup 2WD is a small pickup with two-wheel drive, a gasoline 2.0-liter four-cylinder engine, and a four-speed manual transmission. Its EPA rating is 23 MPG combined, with 21 MPG in city driving and 26 MPG on the highway. EPA annual fuel cost is $2,900, and tailpipe CO2 is 386.39 grams per mile.

Good to know

  • 23 MPG combined EPA rating
  • 26 MPG highway EPA rating
  • Small 2WD pickup body
  • 2.0-liter four-cylinder with four-speed manual

Watch for

  • 21 MPG city EPA rating
  • EPA annual fuel cost of $2,900
  • Gasoline powertrain
  • 386.39 g per mile tailpipe CO2

Who it suits. Drivers wanting a small two-wheel-drive pickup Buyers comfortable with a manual transmission Highway users who can use the 26 MPG rating

Pick this GMC when a small pickup body, two-wheel drive, and a four-speed manual are central to your needs. Its 23 MPG combined rating is the headline number, but the 21 MPG city result matters if most trips are urban. Highway-oriented drivers get the stronger 26 MPG rating. The EPA fuel-cost estimate is $2,900 a year, so fuel spending is a major part of the decision. This truck's gasoline powertrain and 386.39 grams-per-mile tailpipe CO2 figure also define its running trade-offs.

What it is

This 1984 GMC S15 Pickup 2WD is a pickup in the EPA's Small Pickup Trucks 2WD class. It uses gasoline, sends power through two-wheel drive, and has a 2.0-liter four-cylinder engine with a four-speed manual transmission.

The numbers

The figure to watch is 23 MPG combined. That rating blends the truck's 21 MPG city figure with its 26 MPG highway figure.

In city driving, 21 MPG means more fuel stops than the highway rating suggests. Steady highway trips are rated at 26 MPG.

What it costs to run

EPA lists annual fuel cost at $2,900. Tailpipe CO2 is 386.39 grams per mile.

How it compares

The relevant comparison group is small 2WD pickups. Within that frame, its baseline is 23 MPG combined, with a 21 MPG city rating and a 26 MPG highway rating.

Those three figures show the trade-off directly: highway use is rated five MPG higher than city use.

Who it suits

It suits a buyer who wants a small pickup and is comfortable with two-wheel drive, gasoline power, and a manual gearbox.

Its EPA numbers fit drivers who can make use of the 26 MPG highway rating, while accepting 21 MPG in city driving.

Trade-offs

The 2.0-liter four-cylinder and manual four-speed keep the powertrain straightforward, but this is still a gasoline truck with a listed $2,900 annual fuel cost.

Two-wheel drive places it in the 2WD small-pickup class. Its city rating is lower than its highway rating, at 21 versus 26 MPG.

Verdict

The S15 Pickup 2WD makes sense for someone seeking a small gasoline pickup with a manual transmission and a clear EPA fuel-use profile. The 23 MPG combined rating gives a simple ownership reference, while the 21 MPG city and 26 MPG highway figures show how driving pattern changes fuel use. Consider its $2,900 annual fuel cost and 386.39 grams per mile of tailpipe CO2 before choosing it for regular urban travel or longer highway runs.

Every figure on record

Efficiency
Combined MPG
23 MPG
City MPG
21 MPG
Highway MPG
26 MPG
Running cost
Annual fuel cost
$2,900
Tailpipe CO₂
386 g per mile
The car
Model year
1984
Body
Pickup
EPA size class
Small Pickup Trucks 2WD
Drive
2-Wheel Drive
Powertrain
Engine
2.0 L 4-cyl
Transmission
Manual 4-spd
Fuel
Gasoline

Questions

What is the 1984 GMC S15 Pickup 2WD's combined MPG?

Its EPA combined rating is 23 MPG.

What are its city and highway MPG figures?

EPA rates it at 21 MPG in the city and 26 MPG on the highway.

How much does it cost to fuel each year?

The EPA annual fuel-cost figure is $2,900.

What engine and transmission does it use?

It has a gasoline 2.0-liter four-cylinder engine and a four-speed manual transmission.

Is the GMC S15 Pickup 2WD four-wheel drive?

No. The listed drive type is two-wheel drive.

What is its tailpipe CO2 figure?

Tailpipe CO2 is listed at 386.39 grams per mile.

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