1984 Mercury Marquis
14 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Marquis | 17 | 22 | 19 | Regular Gasoline | — | 2.3L 4-cyl | Automatic 3-spd |
| Marquis | 16 | 20 | 18 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis | 18 | 22 | 20 | Regular Gasoline | — | 2.3L 4-cyl | Automatic 3-spd |
| Marquis | 16 | 20 | 17 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis | 17 | 23 | 19 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 4-spd |
| Marquis | 16 | 20 | 18 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis | 15 | 22 | 17 | Regular Gasoline | — | 5L 8-cyl | Automatic 4-spd |
| Marquis | 14 | 20 | 16 | Regular Gasoline | — | 5L 8-cyl | Automatic 4-spd |
| Marquis | 17 | 22 | 19 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 4-spd |
| Marquis Wagon | 17 | 22 | 19 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 4-spd |
| Marquis Wagon | 16 | 20 | 18 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis Wagon | 16 | 20 | 18 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis Wagon | 16 | 20 | 17 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 3-spd |
| Marquis Wagon | 17 | 23 | 19 | Regular Gasoline | — | 3.8L 6-cyl | Automatic 4-spd |