1989 Mercury Grand Marquis
2 configurations — EPA fuel economy ratings
| Trim / Variant | City MPG | Hwy MPG | Combined MPG | Fuel | Drive | Engine | Transmission |
|---|---|---|---|---|---|---|---|
| Grand Marquis | 15 | 22 | 18 | Regular Gasoline | Rear-Wheel Drive | 5L 8-cyl | Automatic 4-spd |
| Grand Marquis Wagon | 15 | 22 | 18 | Regular Gasoline | Rear-Wheel Drive | 5L 8-cyl | Automatic 4-spd |