1986 Oldsmobile Calais MPG and Fuel Economy

On this page, you will find a complete guide to the miles per gallon and fuel efficiency data for the 1986 Oldsmobile Calais.

The 1986 Oldsmobile Calais has 3 model options: Automatic 3-spd 4-cyl, 2.5 L, Manual 5-spd 4-cyl, 2.5 L and Automatic 3-spd 6-cyl, 3.0 L.

The 1986 Oldsmobile Calais Automatic 3-spd 4-cyl, 2.5 L runs on regular gasoline and is in the Compact Cars car class.

The 1986 Oldsmobile Calais Manual 5-spd 4-cyl, 2.5 L runs on regular gasoline and is in the Compact Cars car class.

The 1986 Oldsmobile Calais Automatic 3-spd 6-cyl, 3.0 L runs on regular gasoline and is in the Compact Cars car class.

🛣 How Many Miles per Gallon (MPG) Does a 1986 Oldsmobile Calais Get?

Across all models, the combined average MPG for the 1986 Oldsmobile Calais is 22 miles per gallon.

The table below breaks down the MPG for each model option:

Model OptionCombined MPGCity MPGHighway MPG
Automatic 3-spd 4-cyl, 2.5 L232029
Manual 5-spd 4-cyl, 2.5 L242131
Automatic 3-spd 6-cyl, 3.0 L201725

💵 What is the Average Yearly Fuel Cost for a 1986 Oldsmobile Calais?

The average fuel costs for all models of the 1986 Oldsmobile Calais is $2,817.

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 1986 Oldsmobile Calais to an average vehicle over 5 years, you will spend $2,583 more on fuel.

The table below shows the fuel costs and 5-year save/spend for each model option:

Model OptionFuel Cost5-Year Save/Spend
Automatic 3-spd 4-cyl, 2.5 L$2,700spend $2,000 more
Manual 5-spd 4-cyl, 2.5 L$2,600spend $1,500 more
Automatic 3-spd 6-cyl, 3.0 L$3,150spend $4,250 more

🛢 How Many Barrels of Petroleum Does a 1986 Oldsmobile Calais Consume?

Across all models, the average number barrels of petroleum that the 1986 Oldsmobile Calais will consume in one year is 13 barrels.

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

Model OptionBarrels
Automatic 3-spd 4-cyl, 2.5 L13
Manual 5-spd 4-cyl, 2.5 L12
Automatic 3-spd 6-cyl, 3.0 L15

💨 How Many Grams of CO2 Does a 1986 Oldsmobile Calais Emit?

The 1986 Oldsmobile Calais 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 1986 Oldsmobile Calais.

Overview

The tables below cover all of the miles per gallon, engine specifications, and emission details we have for the 3 1986 Oldsmobile Calais model options.

Automatic 3-spd 4-cyl, 2.5 L

The table below contains all of the details we have for the 1986 Oldsmobile Calais Automatic 3-spd 4-cyl, 2.5 L:

City MPG20
Highway MPG29
Combined MPG23
Save/Spend vs Average CarSpend $2,000
Fuel Cost$2,700
Fuel Type 1Regular
Barrels of Petroleum13
Grams of CO2-15,000
Trees Needed to Offset-1
DriveFront-Wheel Drive
Cylinders4
Displacement2.5
TransmissionAutomatic 3-spd
Vehicle ClassCompact Cars
Start/Stop?No
Supercharged?No
Turbocharged?No

Manual 5-spd 4-cyl, 2.5 L

The table below contains all of the details we have for the 1986 Oldsmobile Calais Manual 5-spd 4-cyl, 2.5 L:

City MPG21
Highway MPG31
Combined MPG24
Save/Spend vs Average CarSpend $1,500
Fuel Cost$2,600
Fuel Type 1Regular
Barrels of Petroleum12
Grams of CO2-15,000
Trees Needed to Offset-1
DriveFront-Wheel Drive
Cylinders4
Displacement2.5
TransmissionManual 5-spd
Vehicle ClassCompact Cars
Start/Stop?No
Supercharged?No
Turbocharged?No

Automatic 3-spd 6-cyl, 3.0 L

The table below contains all of the details we have for the 1986 Oldsmobile Calais Automatic 3-spd 6-cyl, 3.0 L:

City MPG17
Highway MPG25
Combined MPG20
Save/Spend vs Average CarSpend $4,250
Fuel Cost$3,150
Fuel Type 1Regular
Barrels of Petroleum15
Grams of CO2-15,000
Trees Needed to Offset-1
DriveFront-Wheel Drive
Cylinders6
Displacement3
TransmissionAutomatic 3-spd
Vehicle ClassCompact 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.

  • "1986 Oldsmobile Calais MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/oldsmobile/calais/1986.

  • "1986 Oldsmobile Calais MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/oldsmobile/calais/1986. Accessed January 3, 2026.

  • 1986 Oldsmobile Calais MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/oldsmobile/calais/1986.