2003 Mercury Grand Marquis
US · Large Cars
The 2003 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 Every figure below carries the source it came from, and anything our sources do not publish is left out rather than estimated.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
- 4.6L 8-cylinder
- Power
- Not available
- Torque
- Not available
- Transmission
- 4-speed automatic
- Drivetrain
- RWD
- Fuel
- Gasoline
- Seating
- Not available
Key Performance & Dimensions
Engine
| Specification | Value | Source |
|---|---|---|
| Engine | 4.6L 8-cylinder | |
| Displacement | 4.6 L | |
| Cylinders | 8 | |
| Fuel type | Gasoline | EPA fueleconomy.gov |
Not available from our sources: Aspiration, Power, Torque.
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 | 18 mpg (13.1 L/100 km) | EPA fueleconomy.gov |
| City | 16 mpg (14.7 L/100 km) | |
| Highway | 23 mpg (10.2 L/100 km) |
Not available from our sources: Electric range, Battery capacity.
Trims and configurations
1 configuration 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 October 18, 2026.
15V861000: EXTERIOR LIGHTING:HEADLIGHTS
Ford Motor Company (Ford) is recalling certain model year 2003-2005 Ford Crown Victoria and Mercury Grand Marquis vehicles manufactured October 3, 2001, to August 2, 2005. The affected vehicles have a lighting control module (LCM) that may fail, resulting in a loss of headlights.
Remedy: Ford will notify owners, and dealers will replace the LCM, free of charge. The recall began April 14, 2017. Owners may contact Ford customer service at 1-866-436-7332. Ford's number for this recall is 15S39.
Reported December 22, 2015. View on NHTSA
06E056000: FUEL SYSTEM, GASOLINE
CERTAIN AFTERMARKET FUEL FILTERS SOLD UNDER THE PUROLATOR BRAND NAME, P/N F65277, SHIPPED FROM JANUARY 16 THROUGH JUNE 2, 2006, FOR USE ON THE ABOVE LISTED PASSENGER VEHICLES. DUE TO INCORRECT DESIGN, THE QUICK CONNECTORS MAY NOT FULLY SEAT WITH THE TUBE INTERFACE, EVEN THOUGH THE PERSON MAKING THE CONNECTION MAY BELIEVE THAT THE QUICK CONNECTOR IS FULLY ATTACHED.
Remedy: UFI WILL NOTIFY OWNERS AND REPLACE THE FILTERS FREE OF CHARGE. THE RECALL BEGAN ON AUGUST 4, 2006. OWNERS MAY CONTACT UFI FILTERS USA AT 800-230-5876.
Reported June 13, 2006. View on NHTSA
Data sources
- EPA fueleconomy.gov · retrieved October 18, 2026 · US Government public data
- NHTSA vPIC · retrieved October 18, 2026 · US Government public data
Source checked: October 18, 2026
Data verified: October 18, 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
- 2002 Mercury Grand Marquis
Gasoline
4.6L 8-cylinder · RWD
18 mpg (13.1 L/100 km) - 2004 Mercury Grand Marquis
Gasoline
4.6L 8-cylinder · RWD
18 mpg (13.1 L/100 km)
Frequently asked questions
What engine does the 2003 Mercury Grand Marquis have?
4.6L 8-cylinder. Engines can differ by trim, so check the trim list below.
What is the fuel economy of the 2003 Mercury Grand Marquis?
Combined fuel economy is 18 mpg (13.1 L/100 km), as published by the source shown in the specification table.
Is the 2003 Mercury Grand Marquis front-wheel, rear-wheel or all-wheel drive?
Drivetrain: RWD.
Are there recalls for the 2003 Mercury Grand Marquis?
NHTSA lists 2 recall campaigns for this model year (last checked October 18, 2026). Details are in the Recalls section.