Oldsmobile
Calais
U.S. fuel economy and specifications from the EPA.

25Best combined MPG1985 model year
1985–1987Model years3 with EPA ratings
10Rated configurationsDrive, transmission and engine
2.5–3 LEngine sizeDisplacement
Best combined MPG by model year
The highest EPA rating among each year's configurations.
1985 25 MPG
1986 24 MPG
1987 23 MPG
3 configurations.
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 23
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Manual 5-spd
Regular gasoline · Compact Cars
- Combined MPG
- 23
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 20
- Engine displacement
- 3.0 L
- Cylinders
- 6
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 23
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Manual 5-spd
Regular gasoline · Compact Cars
- Combined MPG
- 24
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 20
- Engine displacement
- 3.0 L
- Cylinders
- 6
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 19
- Engine displacement
- 3.0 L
- Cylinders
- 6
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 24
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Manual 5-spd
Regular gasoline · Compact Cars
- Combined MPG
- 25
- Engine displacement
- 2.5 L
- Cylinders
- 4
Front-Wheel Drive · Automatic 3-spd
Regular gasoline · Compact Cars
- Combined MPG
- 20
- Engine displacement
- 3.0 L
- Cylinders
- 6