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GMC

GMC · model year 1984

1984 GMC K15 Pickup 4WD

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

EPA figures · 1984fueleconomy.gov
14MPG combined
12/16MPG city / highway
$4,800fuel a year
635 g CO₂ per mile 5.0 L 8-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 K15 Pickup 4WD is a gasoline standard pickup with four-wheel or all-wheel drive, a 5.0-liter eight-cylinder engine, and a four-speed manual transmission. Its EPA rating is 14 MPG combined, with 12 MPG city and 16 MPG highway. EPA annual fuel cost is $4,800.

Good to know

  • Four-wheel or all-wheel drive pickup layout
  • 5.0-liter eight-cylinder gasoline engine
  • Four-speed manual transmission
  • 16 MPG EPA highway rating

Watch for

  • 14 MPG combined fuel economy
  • 12 MPG EPA city rating
  • $4,800 EPA annual fuel cost
  • 634.79 grams of CO2 per mile

Who it suits. Drivers seeking a 4WD gasoline pickup Buyers who want a manual transmission Owners comfortable with high fuel costs

The 1984 GMC K15 Pickup 4WD makes sense for shoppers who specifically want a gasoline 4WD pickup with a manual transmission and eight-cylinder engine. Its 14 MPG combined result is modest, and the EPA's $4,800 yearly fuel estimate is the number to weigh before buying. Highway use is less demanding than city use, but neither figure suggests an economy-focused truck. This is a purpose-driven choice: accept the fuel commitment for the pickup body and drivetrain, or choose another vehicle if lower running cost matters more.

What it is

This 1984 GMC K15 Pickup 4WD is a gasoline pickup in the EPA's Standard Pickup Trucks 4WD class. It uses four-wheel or all-wheel drive and a four-speed manual transmission.

Power comes from a 5.0-liter, eight-cylinder engine.

The numbers

The defining figure is 14 MPG combined. EPA estimates 12 MPG in city driving and 16 MPG on the highway.

That split shows the effect of driving conditions: stop-and-go city use returns fewer miles per gallon, while steady highway travel returns more.

What it costs to run

EPA lists annual fuel cost at $4,800. The figure applies to this gasoline pickup's official fuel-economy rating.

Its tailpipe output is 634.79 grams of CO2 per mile.

How it compares

The K15's 14 MPG combined rating is the useful yardstick when comparing other standard 4WD pickups. Its 12 city and 16 highway figures show where its fuel use falls across common driving conditions.

Four-wheel or all-wheel drive, an eight-cylinder engine, and a manual gearbox define the setup behind those numbers.

Who it suits

This pickup suits a buyer who needs a 4WD truck layout and accepts a high fuel bill in return. It also fits someone who prefers a manual transmission and a gasoline eight-cylinder engine.

Its EPA figures make the highway case stronger than the city case, so drivers covering more open-road miles may find the rating easier to live with.

Trade-offs

Four-wheel or all-wheel drive and the 5.0-liter eight-cylinder engine come with 14 MPG combined fuel economy. City driving drops to 12 MPG.

The four-speed manual gives the truck a manual powertrain, while the $4,800 annual fuel-cost estimate sets a clear running expense.

Verdict

Choose the 1984 GMC K15 Pickup 4WD for its truck format, 4WD system, and manual control rather than for low fuel use. The EPA numbers point to a vehicle that consumes more fuel in town than on the highway, with a substantial yearly gasoline expense. If those running costs fit your budget and you want an eight-cylinder 4WD pickup, its figures are straightforward. If minimizing fuel spending is the priority, this rating gives you a reason to look elsewhere.

Every figure on record

Efficiency
Combined MPG
14 MPG
City MPG
12 MPG
Highway MPG
16 MPG
Running cost
Annual fuel cost
$4,800
Tailpipe CO₂
635 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
5.0 L 8-cyl
Transmission
Manual 4-spd
Fuel
Gasoline

Questions

What fuel does the 1984 GMC K15 Pickup 4WD use?

It uses gasoline.

What is its combined MPG?

The EPA combined rating is 14 MPG.

What are its city and highway MPG figures?

It is rated at 12 MPG city and 16 MPG highway.

How much does it cost to fuel each year?

EPA lists annual fuel cost at $4,800.

What engine is in this GMC pickup?

It has a 5.0-liter, eight-cylinder engine.

Does it have four-wheel drive?

Yes. The listed drive type is four-wheel or all-wheel drive.

What transmission does it use?

It uses a four-speed manual transmission.

What is its tailpipe CO2 figure?

Tailpipe CO2 is listed at 634.79 grams per mile.

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