Fuel economy & running costsGasoline
15MPGcombined
13city
19highway
A year of fuel$4,450
CO₂ from the tailpipe592.5 g/mi
Figures from the EPA label (fueleconomy.gov), the same as on the car's window sticker.
Against the 609 mercury cars
Bars are scaled to the best in the list; the mark shows the list average. Lower is better for fuel cost; higher is better for the rest. All figures are the EPA's.
Summary
1984 Mercury Grand Marquis by Mercury. The figures below are from US EPA fueleconomy.gov, with the page each one came from.
Details
- Model year
- 1984fueleconomy.gov · 3 Oct 2026
Efficiency
- Combined MPG
- 15fueleconomy.gov · 3 Oct 2026
- City MPG
- 13fueleconomy.gov · 3 Oct 2026
- Highway MPG
- 19fueleconomy.gov · 3 Oct 2026
Running cost
- Annual fuel cost
- $4,450fueleconomy.gov · 3 Oct 2026
- CO₂ (tailpipe)
- 592.5 g/mifueleconomy.gov · 3 Oct 2026
Car
- Body
- Carfueleconomy.gov · 3 Oct 2026
- EPA class
- Large Carsfueleconomy.gov · 3 Oct 2026
Powertrain
- Engine
- 5.0 L 8-cylfueleconomy.gov · 3 Oct 2026
- Transmission
- Automatic 4-spdfueleconomy.gov · 3 Oct 2026
- Fuel
- Gasolinefueleconomy.gov · 3 Oct 2026
More mercury cars
See the list #1 2011 · Mercury Grand Marquis FFV 19Combined MPG $3,550Fuel / year 
#2 2011 · Mercury Mariner 4WD 22Combined MPG $3,050Fuel / year #3 2011 · Mercury Mariner 4WD FFV 20Combined MPG $3,350Fuel / year #4 2011 · Mercury Mariner FWD 23Combined MPG $2,900Fuel / year #5 2011 · Mercury Mariner FWD FFV 21Combined MPG $3,200Fuel / year #6 2011 · Mercury Mariner Hybrid 4WD 29Combined MPG $2,300Fuel / year Listed on CarCody
Sources
- fueleconomy.gov/feg/noframes/28111.shtml· checked 3 Oct 2026