1984 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 1984 Cadillac Fleetwood/DeVille (FWD).

The 1984 Cadillac Fleetwood/DeVille (FWD) runs on diesel and is in the Large Cars car class.

Whether you are considering a purchase of the car, or just wanting to find out how economical and environmentally friendly (or un-friendly) your 1984 Cadillac Fleetwood/DeVille (FWD) is, we have the information you need.

🛣 How Many Miles per Gallon (MPG) Does a 1984 Cadillac Fleetwood/DeVille (FWD) Get?

First off, the most commonly asked question. A 1984 Cadillac Fleetwood/DeVille (FWD) gets up to 21 miles per gallon in the city, and 31 miles per gallon on the highway.

The combined average MPG for the 1984 Cadillac Fleetwood/DeVille (FWD) is 24 miles per gallon.

💵 What is the Average Yearly Fuel Cost for a 1984 Cadillac Fleetwood/DeVille (FWD)?

The estimated fuel costs for the 1984 Cadillac Fleetwood/DeVille (FWD) is $3,200 per year.

That value has been estimated by government regulators based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.

If you were to compare a 1984 Cadillac Fleetwood/DeVille (FWD) to an average vehicle over 5 years, you will spend $4,500 more on fuel.

🛢 How Many Barrels of Petroleum Does a 1984 Cadillac Fleetwood/DeVille (FWD) Consume?

The 1984 Cadillac Fleetwood/DeVille (FWD) will consume roughly 15 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.

The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.


The table below covers all of the miles per gallon, engine specifications, and emission details we have for the 1984 Cadillac Fleetwood/DeVille (FWD).

City MPG 21
Highway MPG 31
Combined MPG 24
Save/Spend vs Average Car Spend $4,500
Fuel Cost $3,200
Fuel Type 1 Diesel
ATV Type Diesel
Barrels of Petroleum 15
Drive Rear-Wheel Drive
Cylinders 6
Transmission Automatic 4-spd
Vehicle Class Large Cars
Start/Stop? No
Supercharged? No
Turbocharged? No

Related Cadillac Models from 1984

If you're interested in other Cadillac models from 1984, you can find them in the table below. You can click the model link to find miles per gallon and emission information for that model.


Ratings were provided by the manufacturer to the U.S. Department of Energy, which is where we sourced the data. Be advised that manufacturers may have upgraded, downgraded, or changed these ratings following the compilation of this data.

MPG Buddy does not guarantee the accuracy of this data, nor are we liable for any decisions made by referencing this data. Make sure to contact the specific car manufacturer to confirm accuracy.

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  • "1984 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy". MPG Buddy. Accessed on August 8, 2022. http://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1984.

  • "1984 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy". MPG Buddy, http://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1984. Accessed 8 August, 2022

  • 1984 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy. MPG Buddy. Retrieved from http://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1984.