1985 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 1985 Cadillac Fleetwood/DeVille (FWD).
The 1985 Cadillac Fleetwood/DeVille (FWD) has 4 model options: Automatic 4-spd 8-cyl, 4.1 L, Automatic 4-spd 6-cyl, 4.3 L, Automatic 4-spd 8-cyl, 4.1 L and Automatic 4-spd 6-cyl, 4.3 L.
The 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 8-cyl, 4.1 L runs on regular gasoline and is in the Large Cars car class.
The 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 6-cyl, 4.3 L runs on diesel and is in the Large Cars car class.
The 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 8-cyl, 4.1 L runs on regular gasoline and is in the Large Cars car class.
The 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 6-cyl, 4.3 L runs on diesel and is in the Large Cars car class.
🛣 How Many Miles per Gallon (MPG) Does a 1985 Cadillac Fleetwood/DeVille (FWD) Get?
Across all models, the combined average MPG for the 1985 Cadillac Fleetwood/DeVille (FWD) is 21 miles per gallon.
The table below breaks down the MPG for each model option:
| Model Option | Combined MPG | City MPG | Highway MPG |
|---|---|---|---|
| Automatic 4-spd 8-cyl, 4.1 L | 18 | 15 | 22 |
| Automatic 4-spd 6-cyl, 4.3 L | 23 | 19 | 29 |
| Automatic 4-spd 8-cyl, 4.1 L | 18 | 15 | 22 |
| Automatic 4-spd 6-cyl, 4.3 L | 23 | 19 | 29 |
💵 What is the Average Yearly Fuel Cost for a 1985 Cadillac Fleetwood/DeVille (FWD)?
The average fuel costs for all models of the 1985 Cadillac Fleetwood/DeVille (FWD) is $3,425.
The average fuel costs have 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.
Comparing a 1985 Cadillac Fleetwood/DeVille (FWD) to an average vehicle over 5 years, you will spend $5,625 more on fuel.
The table below shows the fuel costs and 5-year save/spend for each model option:
| Model Option | Fuel Cost | 5-Year Save/Spend |
|---|---|---|
| Automatic 4-spd 8-cyl, 4.1 L | $3,500 | spend $6,000 more |
| Automatic 4-spd 6-cyl, 4.3 L | $3,350 | spend $5,250 more |
| Automatic 4-spd 8-cyl, 4.1 L | $3,500 | spend $6,000 more |
| Automatic 4-spd 6-cyl, 4.3 L | $3,350 | spend $5,250 more |
🛢 How Many Barrels of Petroleum Does a 1985 Cadillac Fleetwood/DeVille (FWD) Consume?
Across all models, the average number barrels of petroleum that the 1985 Cadillac Fleetwood/DeVille (FWD) will consume in one year is 17 barrels.
The majority of the world's petroleum is sourced from countries like Saudi Arabia, Russia, Iraq, and the United States.
| Model Option | Barrels |
|---|---|
| Automatic 4-spd 8-cyl, 4.1 L | 17 |
| Automatic 4-spd 6-cyl, 4.3 L | 16 |
| Automatic 4-spd 8-cyl, 4.1 L | 17 |
| Automatic 4-spd 6-cyl, 4.3 L | 16 |
💨 How Many Grams of CO2 Does a 1985 Cadillac Fleetwood/DeVille (FWD) Emit?
The 1985 Cadillac Fleetwood/DeVille (FWD) will emit an average of about -15,000 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 1 tree would be needed to offset emissions from the 1985 Cadillac Fleetwood/DeVille (FWD).
Overview
The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 4 1985 Cadillac Fleetwood/DeVille (FWD) model options.
Automatic 4-spd 8-cyl, 4.1 L
The table below contains all of the details we have for the 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 8-cyl, 4.1 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 22 |
| Combined MPG | 18 |
| Save/Spend vs Average Car | Spend $6,000 |
| Fuel Cost | $3,500 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 17 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Front-Wheel Drive |
| Cylinders | 8 |
| Displacement | 4.1 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Large Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 6-cyl, 4.3 L:
| City MPG | 19 |
|---|---|
| Highway MPG | 29 |
| Combined MPG | 23 |
| Save/Spend vs Average Car | Spend $5,250 |
| Fuel Cost | $3,350 |
| Fuel Type 1 | Diesel |
| ATV Type | Diesel |
| Barrels of Petroleum | 16 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Front-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Large Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 8-cyl, 4.1 L
The table below contains all of the details we have for the 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 8-cyl, 4.1 L:
| City MPG | 15 |
|---|---|
| Highway MPG | 22 |
| Combined MPG | 18 |
| Save/Spend vs Average Car | Spend $6,000 |
| Fuel Cost | $3,500 |
| Fuel Type 1 | Regular |
| Barrels of Petroleum | 17 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Front-Wheel Drive |
| Cylinders | 8 |
| Displacement | 4.1 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Large Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Automatic 4-spd 6-cyl, 4.3 L
The table below contains all of the details we have for the 1985 Cadillac Fleetwood/DeVille (FWD) Automatic 4-spd 6-cyl, 4.3 L:
| City MPG | 19 |
|---|---|
| Highway MPG | 29 |
| Combined MPG | 23 |
| Save/Spend vs Average Car | Spend $5,250 |
| Fuel Cost | $3,350 |
| Fuel Type 1 | Diesel |
| ATV Type | Diesel |
| Barrels of Petroleum | 16 |
| Grams of CO2 | -15,000 |
| Trees Needed to Offset | -1 |
| Drive | Front-Wheel Drive |
| Cylinders | 6 |
| Displacement | 4.3 |
| Transmission | Automatic 4-spd |
| Vehicle Class | Large Cars |
| Start/Stop? | No |
| Supercharged? | No |
| Turbocharged? | No |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1985">1985 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy</a>
"1985 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1985.
"1985 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1985. Accessed January 3, 2026.
1985 Cadillac Fleetwood/DeVille (FWD) MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/cadillac/fleetwood-deville-fwd/1985.