Photo: Ford Mustang by Rennett Stowe from USA, CC BY 2.0, via Wikimedia Commons. It shows the model, not always this exact version.

Ford · model year 1984

1984 Ford Mustang

Subcompact · Gas · EPA class: Subcompact Cars

EPA figures · 1984fueleconomy.gov

18MPG combined

17/20MPG city / highway

$3,700fuel a year

494 g CO₂ per mile 3.8 L 6-cyl Automatic 3-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 Ford Mustang is a gasoline subcompact car with a 3.8-liter six-cylinder engine and a three-speed automatic transmission. Its defining EPA figure is 18 combined MPG, with 17 MPG city and 20 MPG highway. EPA lists annual fuel cost at $3,700 and tailpipe CO2 at 493.72 grams per mile.

Good to know

18 MPG combined EPA rating
20 MPG highway rating
3.8 L six-cylinder engine
Three-speed automatic transmission

Watch for

17 MPG city rating
$3,700 EPA annual fuel cost
493.72 grams of CO2 per mile

Who it suits. Drivers wanting a subcompact gasoline car with a six-cylinder engine Highway users who can use the 20 MPG rating

The 1984 Ford Mustang is a subcompact gasoline car centered on an 18 MPG combined EPA rating. Its 3.8 L six-cylinder engine and three-speed automatic transmission define the powertrain. Expect 17 MPG in city use and 20 MPG on the highway. EPA puts annual fuel cost at $3,700, with tailpipe CO2 of 493.72 grams per mile. It makes sense for someone who wants this Mustang’s size and engine layout and accepts the fuel budget that comes with them.

What it is

This 1984 Mustang is a Ford subcompact car running on gasoline. It uses a 3.8 L six-cylinder engine and a three-speed automatic transmission. See other Ford cars in the same maker lineup.

The numbers

The key figure is 18 combined MPG. EPA rates it at 17 MPG in city driving and 20 MPG on the highway.

What it costs to run

EPA lists annual fuel cost at $3,700. Tailpipe CO2 is 493.72 grams per mile.

How it compares

The 18 MPG combined rating gives one blended number for the car. City driving is rated 17 MPG, while highway driving reaches 20 MPG, so your driving mix determines which figure matters more.

Who it suits

It suits a buyer looking for a subcompact gasoline car with a six-cylinder engine and automatic transmission, and who can plan around its 18 MPG combined rating.

Trade-offs

The highway rating is 3 MPG above the city rating, but the combined figure remains 18 MPG. The listed annual fuel cost is $3,700, and emissions are 493.72 grams of CO2 per mile.

Verdict

Choose this Mustang if a subcompact car with its six-cylinder gasoline engine and automatic gearbox fits your needs. Budget for the EPA-listed $3,700 annual fuel cost. Its 20 MPG highway rating may suit longer open-road trips better than its 17 MPG city rating, while the 18 MPG combined number is the clearest overall guide.

Every figure on record

Combined MPG: 18 MPG
City MPG: 17 MPG
Highway MPG: 20 MPG
Annual fuel cost: $3,700
Tailpipe CO₂: 494 g per mile
Model year: 1984
Body: Car
EPA size class: Subcompact Cars
Engine: 3.8 L 6-cyl
Transmission: Automatic 3-spd
Fuel: Gasoline

Questions

What is the 1984 Ford Mustang's combined MPG?

EPA rates the 1984 Ford Mustang at 18 combined MPG.

What city and highway MPG does it get?

It is rated at 17 MPG city and 20 MPG highway.

How much is its annual fuel cost?

EPA lists annual fuel cost at $3,700.

What engine is in this Mustang?

It has a 3.8 L six-cylinder gasoline engine.

What transmission does it use?

The Mustang uses a three-speed automatic transmission.

What body and class is it?

It is a car in the EPA subcompact car class.

How much tailpipe CO2 does it produce?

Its listed tailpipe CO2 is 493.72 grams per mile.