Fuel consumption: 2 of 2 variants rated.
Mercury Grand Marquis tops the Mercury Grand Marquis ranking by Fuel consumption, at 11.3 l/100km (25.0 mpg UK · 20.8 mpg US).
| # | Variant | Year | Body | Fuel | Fuel consumption |
|---|---|---|---|---|---|
| 1 | Mercury Grand Marquis | 2000 | Sedan | Petrol | 11.3 l/100km (25.0 mpg UK · 20.8 mpg US) |
| 2 | Mercury Grand Marquis LS | 1991 | Sedan | Petrol | 11.1 l/100km (25.4 mpg UK · 21.2 mpg US) |