Photo: Mercury Grand Marquis by IFCAR, Public domain, via Wikimedia Commons. It shows the model, not always this exact version.
Mercury · model year 1984
1984 Mercury Grand Marquis
Large · Gas · EPA class: Large Cars
EPA figures · 1984fueleconomy.gov
16MPG combined
14/20MPG city / highway
$4,200fuel a year
555 g CO₂ per mile 5.0 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
- 16 MPG
- City MPG
- 14 MPG
- Highway MPG
- 20 MPG
- Annual fuel cost
- $4,200
- Tailpipe CO₂
- 555 g per mile
- Model year
- 1984
- Body
- Car
- EPA size class
- Large Cars
- Engine
- 5.0 L 8-cyl
- Transmission
- Automatic 4-spd
- Fuel
- Gasoline
Efficiency
Running cost
The car
Powertrain
More Mercury model years
1984 Mercury Cougar
17 MPG · $3,950 fuel a year 1984 Mercury Cougar
18 MPG · $3,700 fuel a year 1984 Mercury Cougar
19 MPG · $3,550 fuel a year 1984 Mercury Cougar
18 MPG · $3,700 fuel a year 1984 Mercury Cougar
19 MPG · $3,550 fuel a year 1984 Mercury Cougar
16 MPG · $4,200 fuel a year 1984 Mercury Grand Marquis
15 MPG · $4,450 fuel a year