1986 Mercury Grand Marquis
US · Large Cars
The 1986 Mercury Grand Marquis is listed in the US market with gasoline power. Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.
- Engine
- 5.0L 8-cylinder (FFS)
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Fuel
- Gasoline
- Economy
- 19 mpg (12.4 L/100 km) combined
Key Figures
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | 5.0L 8-cylinder (FFS) | |
| Displacement | 5.0 L | |
| Cylinders | 8 | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Transmission and drivetrain
| Specification | Value | Source |
|---|---|---|
| Transmission | Automatic | EPA fueleconomy.gov |
| Gears | 4 | |
| Drivetrain | RWD | EPA fueleconomy.gov |
Fuel economy and range
| Specification | Value | Source |
|---|---|---|
| Combined | 19 mpg (12.4 L/100 km) | EPA fueleconomy.gov |
| City | 16 mpg (14.7 L/100 km) | |
| Highway | 24 mpg (9.8 L/100 km) |
Our sources do not publish these for this vehicle: Aspiration, Power, Torque, Electric range, Battery capacity. We leave them out instead of estimating.
Trims and configurations
2 configurations listed by our sources. Engines, drivetrains and fuel economy can differ between them.
Recalls
NHTSA lists 2 recall campaigns for this model year. Last checked November 8, 2026.
07E064000: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK.
Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.
Reported August 27, 2007. View on NHTSA
87V139000: FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
SPRING LOCK FUEL LINE COUPLING MAY NOT BE PROPERLY ENGAGED.
Remedy: INSTALL RETAINER CLIPS OVER THE COUPLINGS TO PREVENT COUPLING SEPARATION AND FUEL LEAKAGE.
Reported September 4, 1987. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved October 24, 2026 · US Government public data
- NHTSA vPIC · retrieved October 24, 2026 · US Government public data
Source checked: October 24, 2026
Data verified: October 24, 2026
Specifications can vary by market, trim, configuration and production date. Confirm with the manufacturer before buying parts or making safety decisions. Report an error.
Related vehicles
- 1985 Mercury Grand Marquis
Gasoline
5.0L 8-cylinder ((FFS)) · RWD
17 mpg (13.8 L/100 km) - 1987 Mercury Grand Marquis
Gasoline
5.0L 8-cylinder ((FFS)) · RWD
19 mpg (12.4 L/100 km)
Frequently asked questions
What engine does the 1986 Mercury Grand Marquis have?
5.0L 8-cylinder ((FFS)). Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 1986 Mercury Grand Marquis?
Combined fuel economy is 19 mpg (12.4 L/100 km), as published by the source shown in the specification table.
Is the 1986 Mercury Grand Marquis front-wheel, rear-wheel or all-wheel drive?
Drivetrain: RWD.
Are there recalls for the 1986 Mercury Grand Marquis?
NHTSA lists 2 recall campaigns for this model year (last checked November 8, 2026). Details are in the Recalls section.