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GMC

GMC · model year 1984

1984 GMC T15 (S15) Pickup 4WD

Pickup · 4-Wheel or All-Wheel Drive · Gas · EPA class: Standard Pickup Trucks 4WD

EPA figures · 1984fueleconomy.gov
20MPG combined
18/23MPG city / highway
$3,350fuel a year
444 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

It returns 18 MPG in city driving, 23 MPG on the highway, and 20 MPG combined. Annual fuel cost is $3,350, with tailpipe emissions of 444.35 grams per mile.

Good to know

  • Four-wheel or all-wheel drive
  • Manual four-speed transmission
  • 23 MPG highway rating
  • 2.0-liter four-cylinder engine

Watch for

  • 18 MPG city rating
  • 20 MPG combined fuel economy
  • $3,350 annual fuel cost
  • 444.35 grams per mile of tailpipe CO2

Who it suits. Buyers seeking a 1984 4WD pickup Drivers who prefer a manual transmission Owners focused on truck body and drivetrain

Choose this GMC when a 1984 4WD pickup and manual transmission matter more than minimizing fuel bills. The 18-MPG city figure can make frequent urban trips costly, while highway use improves to 23 MPG. Its 20-MPG combined result and $3,350 yearly fuel cost set a clear running-cost expectation. Tailpipe output is also high at 444.35 grams per mile, so this truck fits buyers comfortable with that expense and emissions level.

What it is

It uses a 2.0-liter four-cylinder gasoline engine and a four-speed manual transmission. See more GMC cars.

The numbers

The defining figure is 20 combined MPG. City driving is rated at 18 MPG, while highway driving reaches 23 MPG.

What it costs to run

Annual fuel cost is $3,350. Tailpipe CO2 is 444.35 grams per mile. These figures reflect gasoline use from the listed mileage ratings.

How it compares

The 23-MPG highway rating is higher than the 18-MPG city rating. Your result will depend on how much of your driving is in town versus on open roads.

Who it suits

This truck suits a buyer seeking a 4WD pickup with a manual gearbox and a gasoline four-cylinder engine. Its mileage figures fit someone who accepts moderate fuel economy for this body and drivetrain.

Trade-offs

Four-wheel or all-wheel drive gives this pickup its intended drivetrain layout, but the combined rating is 20 MPG. The manual four-speed and 2.0-liter engine keep the powertrain straightforward, while the listed annual fuel cost is substantial.

Verdict

Choose this GMC when a 1984 4WD pickup and manual transmission matter more than minimizing fuel bills. The 18-MPG city figure can make frequent urban trips costly, while highway use improves to 23 MPG. Its 20-MPG combined result and $3,350 yearly fuel cost set a clear running-cost expectation. Tailpipe output is also high at 444.35 grams per mile, so this truck fits buyers comfortable with that expense and emissions level.

Every figure on record

Efficiency
Combined MPG
20 MPG
City MPG
18 MPG
Highway MPG
23 MPG
Running cost
Annual fuel cost
$3,350
Tailpipe CO₂
444 g per mile
The car
Model year
1984
Body
Pickup
EPA size class
Standard Pickup Trucks 4WD
Drive
4-Wheel or All-Wheel Drive
Powertrain
Engine
2.0 L 4-cyl
Transmission
Manual 4-spd
Fuel
Gasoline

Questions

What is its combined fuel economy?

The combined rating is 20 MPG.

What are its city and highway MPG figures?

It is rated at 18 MPG in the city and 23 MPG on the highway.

How much does it cost to fuel each year?

The listed annual fuel cost is $3,350.

What engine and transmission does it have?

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

What drivetrain does this GMC pickup use?

It uses four-wheel or all-wheel drive.

How much tailpipe CO2 does it produce?

Tailpipe CO2 is listed at 444.35 grams per mile.

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