34/100

1984Subcompact CarsRegular

1984 Ford Mustang

EPA ID: 27789

Add to Compare

City MPG

Combined MPG

18MPG· Below Avg

Highway MPG

Fuel Economy Overview

The 1984 Ford Mustang achieves an EPA-estimated 18 MPG in combined city and highway driving, with 17 MPG in the city and 20 MPG on the highway. Powered by a 3.8L 6-cylinder engine paired with a automatic 3-spd, this subcompact cars .

In terms of environmental impact, the 1984 Mustang produces approximately 494 grams of CO2 per mile. This figure is measured under standardized EPA test conditions and represents tailpipe emissions only. For context, the average new vehicle sold in the United States produces approximately 400 grams of CO2 per mile, meaning this Mustang has higher-than-average emissions in this regard.

The estimated annual fuel cost for this vehicle is $3,300, based on 15,000 miles of driving per year and current national average fuel prices. Compared to the average new vehicle, you would save $5,750 over a 5-year period. This calculation accounts for differences in fuel consumption efficiency and provides a practical measure of long-term ownership costs attributable to fuel economy.

Energy DNA

Vehicle ClassSubcompact Cars

Fuel TypeRegular

Engine3.8L 6-cyl

AspirationNaturally Aspirated

TransmissionAutomatic 3-spd

Drive TypeN/A

Green Scorecard

CO2 Emissions494 g/mi

Start-Stop SystemNot Equipped

GHG Score-1/10

Smog RatingN/A

Est. Annual Cost$3,300

5-Year Cost DeltaSave $5,750

Personalized Commute CalculatorEPA defaults to 55% City / 45% Hwy

55% City45% Highway

Adjust the slider to match your daily driving habits. City driving involves stop-and-go traffic under 45mph, while highway driving represents sustained speeds over 55mph.

Your Real MPG

18.2

Impact vs EPA

$-37

/ year

💨

Aerodynamic Speed Penalty

EPA highway tests average roughly 48 mph. Driving at 75 mph increases aerodynamic drag exponentially. Expect your real-world highway fuel economy to drop by roughly 15-20% at interstate speeds.

5-Year Total Cost of Ownership

Estimated Monthly Cost

$581/mo

Includes estimated depreciation, fuel, insurance, and state fees over 5 years. Does not include loan interest.

Annual Mileage15,000 mi

Value Depreciation

Est. value lost over 60 months

$12,500

35.9%

Fuel & Electricity

Based on National Average rates ($3.50/gal)

$14,583

41.8%

Estimated Insurance

Based on vehicle class risk profile

$7,375

21.2%

State Registration Fees

Based on National Average DMV base rates

$400

1.1%

Total 5-Year Cost$34,858

Recall Intelligence

Campaign #07E064000·2007-10-15

critical

Component: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP

CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK.

Consequence & Remedy

Consequence: A LEAKING FUEL PUMP COULD CREATE A VEHICLE FIRE HAZARD.

Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.

Campaign #92V063000·1992-09-29

critical

Component: SEAT BELTS:FRONT:ANCHORAGE

THE PLASTIC SLEEVE IN THE FRONT SAFETY BELT TONGUE ASSEMBLY WHICH RETAINS THE LOCK BAR CAN DETERIORATE FROM PROLONGED EXPOSURE TO SUNLIGHT AND BECOME DISPLACED, CAUSING THE TONGUE TO DETACH FROM THE SAFETY BELT WEBBING.

Consequence & Remedy

Consequence: IF THE TONGUE DETACHES FROM THE SAFETY BELT WEBBING, THESAFETY BELT WOULD NOT ATTACH TO ITSELF, RESULTING IN INCREASED RISK OF INJURYTO THE SEAT OCCUPANT IN THE EVENT OF A SUDDEN STOP OR VEHICLE CRASH.

Remedy: FORD WILL REPAIR THE SAFETY BELTS EXPERIENCING THIS CONDITION REGARDLESS OF VEHICLE AGE OR CONDITION.

Campaign #84V119000·1984-12-03

advisory

Component: FUEL SYSTEM, GASOLINE:CARBURETOR SYSTEM

THE SECONDARY THROTTLE SHAFT MAY, WITH ACCUMULATED MILEAGE, BECOME CONTAMINATED AND MAY STICK IN A PARTIALLY OPEN POSITION WHILE DRIVING.

Consequence & Remedy

Consequence: CONSEQUENCE OF DEFECT: THIS STICKING COULD RESULT IN A FASTER SPEED THAN INTENDED, POSSIBLY RESUTLING IN AN ACCIDENT.

Remedy: THE PRIMARY TO SECONDARY THROTTLE CLOSURE LINK ON THE CARBURETOR WILL BE REPLACED FREE OF CHARGE.

Campaign #83V134000·1983-12-22

advisory

Component: SEAT BELTS:FRONT:ANCHORAGE

THE BOLTS THAT ATTACH THE D-SHAPED RING FOR THE SHOULDER BELT ARE INADEQUATELY SUPPORTED BY THE MATERIAL IN WHICH THEY ARE MOUNTED. THE ATTACHMENT DOES NOT COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 210, "SEAT BELT ASSEMBLY ANCHORAGES".

Consequence & Remedy

(Based on 200,000 miles driven)

98.7 metric tons CO₂

Equivalent To:

🌳 122 tree seedlings grown for 10 yrs

✈️ 8.2 cross-country flights/yr

Data Provenance

Data directly from the EPA National Vehicle and Fuel Emissions Laboratory. The combined rating is a weighted average (55% city, 45% highway). For official figures, visit fueleconomy.gov.