Photo: Buick Century by Charles01, CC BY-SA 3.0, via Wikimedia Commons. It shows the model, not always this exact version.
Buick · model year 1984
1984 Buick Century
Midsize · Diesel · EPA class: Midsize Cars
EPA figures · 1984fueleconomy.gov
24MPG combined
21/31MPG city / highway
$4,000fuel a year
424 g CO₂ per mile 4.3 L 6-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
- 24 MPG
- City MPG
- 21 MPG
- Highway MPG
- 31 MPG
- Annual fuel cost
- $4,000
- Tailpipe CO₂
- 424 g per mile
- Model year
- 1984
- Body
- Car
- EPA size class
- Midsize Cars
- Engine
- 4.3 L 6-cyl
- Transmission
- Automatic 4-spd
- Fuel
- Diesel
Efficiency
Running cost
The car
Powertrain
More Buick model years
1984 Buick Century
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19 MPG · $3,550 fuel a year 1984 Buick Century
24 MPG · $4,000 fuel a year 1984 Buick Century Estate Wagon
22 MPG · $3,050 fuel a year