Oldsmobile
Oldsmobile · model year 1984
1984 Oldsmobile Ninety-Eight
Large · Diesel · EPA class: Large Cars
EPA figures · 1984fueleconomy.gov
21MPG combined
18/26MPG city / highway
$4,550fuel a year
485 g CO₂ per mile 5.7 L 8-cyl Automatic 4-spd
This car on fueleconomy.gov, read 2 October 2026. Your own figures depend on how and where you drive.
Where it places
Every figure on record
- Combined MPG
- 21 MPG
- City MPG
- 18 MPG
- Highway MPG
- 26 MPG
- Annual fuel cost
- $4,550
- Tailpipe CO₂
- 485 g per mile
- Model year
- 1984
- Body
- Car
- EPA size class
- Large Cars
- Engine
- 5.7 L 8-cyl
- Transmission
- Automatic 4-spd
- Fuel
- Diesel
Efficiency
Running cost
The car
Powertrain
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