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2004 Mercury Grand Marquis Overview, Reviews, Ratings & Specs

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Simon A | October 14, 2025
The 2004 Mercury Grand Marquis is a full-size luxury sedan, part of a lineage dating back to the 1970s, known for its spacious interior and comfortable ride. Slotting between the Ford Crown Victoria and the Lincoln Town Car, it offered a blend of prestige and practicality. Key trims typically included the GS and the more upscale LS. Its enduring popularity stems from its robust build, smooth highway cruising, and classic American styling, appealing to those seeking dependable, comfortable transportation.
The Good

The 2004 Grand Marquis excels in offering a remarkably comfortable and smooth ride, appealing to those who prioritize a relaxed journey. Its V8 engine provides ample power for confident merging and passing. Known for its robust construction and straightforward mechanics, it boasts strong reliability. The spacious interior and classic, dignified design offer a sense of enduring value and understated luxury.

The Bad

Potential buyers should watch out for typical issues common to older vehicles, including potential rust on the frame and body, especially in harsh climates. Aging suspension components and transmission problems can arise. Fuel economy is also a notable drawback compared to modern vehicles. Interior wear and tear, particularly on leather seats and dashboard materials, is also a common concern.

2004 Mercury Grand Marquis: Quick Overview

  • Engine Options: The 2004 Mercury Grand Marquis primarily featured a 4.6L V8 engine.
  • Horsepower: This V8 engine typically produced around 224 horsepower.
  • Fuel Economy: Expect fuel economy figures in the range of 15-16 MPG in the city and 21-22 MPG on the highway.
  • 0-60 Times: Acceleration to 60 mph was generally in the high 8-second to low 9-second range, reflecting its focus on comfortable cruising rather than sporty performance.
  • Towing Capacity: While not designed as a primary towing vehicle, its robust chassis allowed for light towing, typically rated around 2,000 lbs for small trailers or utility needs when properly equipped.
  • Trim-Level Features:
    GS Trim: Standard features included power windows, power locks, cruise control, air conditioning, AM/FM stereo with CD player, cloth upholstery, and a tilt steering wheel. It offered a comfortable and well-equipped base experience.
    LS Trim: The LS model elevated the luxury with features such as leather seating, power-adjustable front seats, automatic climate control, steering wheel-mounted audio controls, a premium sound system, alloy wheels, and often fog lamps. The LS also typically offered optional upgrades like a power sunroof and upgraded interior trim for a more refined feel. Both trims benefited from the Grand Marquis's inherent spaciousness and comfortable ride.

2004 Mercury Grand Marquis Specifications

Vehicle Information
Year 2004
Make Mercury
Model Grand Marquis
Trim -
Style -
Type Truck
Category Compact Car
Manufacturing Details
Made In Canada
Manufacturing City TALBOTVILLE
Dimensions
Doors 4-Door
Curb Weight -
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 4.6L V8
Engine Size 4.6L
Engine Cylinders 8
Transmission -
Transmission Type -
Transmission Speeds -
Drivetrain 2 Wheel Drive
Additional Features
Anti-Brake System -
Steering Type -
Pricing
Manufacturer Suggested Retail Price (MSRP) -
Invoice Price -
Delivery Charges -

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What Problems Does the 2004 Mercury Grand Marquis Have?

The 2004 Mercury Grand Marquis, built on the robust Panther platform, is generally known for its durability. However, like any vehicle of this age, certain issues are more commonly reported. One recurring concern revolves around the Intake Manifold Gasket, which can degrade over time and lead to coolant leaks, potentially causing engine overheating. Another area to inspect is the Rear Axle Seals, which can develop leaks and require replacement. The Transmission Cooling Lines have also been cited as a potential failure point, leading to transmission fluid leaks and subsequent transmission damage if not addressed promptly. For electrical systems, owners have occasionally reported issues with the Power Window Motors and Door Lock Actuators failing. Regarding recalls, specific to the 2004 model year, there were recalls related to potential issues with the Brake Pedal Bracket, which could fracture under certain conditions, and a recall concerning the Seat Belt Buckle Release Button. Long-term reliability is generally good, especially for the engine and drivetrain, provided regular maintenance is performed. However, the aging suspension components, such as ball joints and bushings, may require attention. Rust can also be a significant concern, particularly in regions where roads are treated with salt during winter. If purchasing a 2004 Grand Marquis, a thorough inspection for rust, especially on the frame and lower body panels, is highly recommended. Overall, while generally reliable, proactive maintenance and attention to common wear items will contribute significantly to its long-term service life.

How long will the 2004 Mercury Grand Marquis last?

Based on owner data and typical maintenance practices, the 2004 Mercury Grand Marquis is renowned for its long-term durability. Many owners report achieving well over 200,000 miles, with some exceeding 300,000 miles with diligent care. The robust V8 engine and sturdy chassis are built to last. Weaknesses that tend to emerge over time include suspension components (bushings, ball joints, shocks/struts) requiring replacement due to wear and tear. Rust can be a significant factor in its longevity, especially in areas with harsh winters. Transmission and rear axle seals are also potential areas that may need attention as mileage accumulates. With regular oil changes, fluid flushes, and addressing minor issues promptly, the Grand Marquis can offer many more years and miles of service, often outlasting many contemporaries.

What Technology & Safety Features are Included?

The 2004 Mercury Grand Marquis prioritized comfort and traditional amenities over cutting-edge technology, which was typical for its class and era. Standard entertainment features included an AM/FM stereo with a CD player. Higher trims, particularly the LS, often came with a premium sound system offering a richer audio experience. Bluetooth connectivity and advanced infotainment systems were not available, reflecting the vehicle's design philosophy. Driver-assistance features were rudimentary, with cruise control being a primary convenience. Anti-lock brakes (ABS) and traction control were available, enhancing safety during braking and acceleration. For safety, the Grand Marquis was equipped with dual front airbags and often side-impact airbags as an option. The robust body-on-frame construction contributed to its structural integrity. In terms of crash-test ratings, the Panther platform vehicles, including the Grand Marquis, generally performed well for their time. The National Highway Traffic Safety Administration (NHTSA) awarded the Ford Crown Victoria (mechanically similar) four out of five stars for frontal driver and passenger impact protection. The Insurance Institute for Highway Safety (IIHS) also rated it favorably in frontal offset crash tests. Optional features could include a power sunroof, heated front seats (on LS), and an upgraded audio system. While lacking modern tech, its emphasis on solid construction and essential safety features provided a secure environment for occupants.

What Colors Options are Available?

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2004 Mercury Grand Marquis Prices and Market Value

When new, the 2004 Mercury Grand Marquis had an original MSRP that typically ranged from around $28,000 for the base GS trim to over $33,000 for the LS model, before options. As a vehicle from 2004, it has experienced significant depreciation. Current used market prices for a 2004 Grand Marquis vary widely based on condition, mileage, and trim level, but can often be found in the $3,000 to $7,000 range. Factors significantly affecting resale value include the vehicle's maintenance history, the presence of rust, interior and exterior condition, and overall mechanical soundness. Well-maintained, low-mileage examples, particularly of the LS trim, can command a slightly higher price. However, its age and less fuel-efficient nature limit its desirability to a niche market of buyers seeking comfort and durability over modern features.

2004 Mercury Grand Marquis Cost of Ownership

The 2004 Mercury Grand Marquis is generally considered economical to own for its class, especially on the used market. Insurance costs are typically moderate, falling into a reasonable range for a sedan of its age and safety features. Fuel costs are a notable expense due to its V8 engine and less-than-optimal fuel economy, averaging around $180-$200 per month depending on driving habits and fuel prices. Maintenance is relatively straightforward and parts are widely available, contributing to lower repair costs compared to more complex luxury vehicles. Routine maintenance like oil changes and filter replacements are standard. Long-term ownership costs are primarily driven by fuel consumption and potential repairs on aging components such as suspension and transmission. Overall, it offers good value but requires a budget for its thirst for fuel.

2004 Mercury Grand Marquis Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity -
City Mileage -
Highway Mileage -

2004 Mercury Grand Marquis Safety Rating

NHTSA
Overall Rating Not Tested
Overall Frontal Star Rating Not Tested
Side Overall Star Rating Not Tested
Overall Rollover Star Rating Not Tested
Combined Front Seat Rating Not Tested
Combined Rear Seat Rating Not Tested
Overall Frontal Star Rating Not Tested
Frontal Barrier Star Ratings Not Tested
Side Barrier Star Ratings Not Tested
Rollover Resistance Star Rating Not Tested

2004 Mercury Grand Marquis Insurance

Insurance for a 2004 Mercury Grand Marquis is moderately priced, reflecting its status as a Truck with strong safety ratings and
reasonable repair costs.

How Does the 2004 Mercury Grand Marquis Compare to Other Truck?

The 2004 Mercury Grand Marquis competed in a segment dominated by large, rear-wheel-drive sedans. Its primary rivals included the Ford Crown Victoria (its fraternal twin, often with slightly fewer luxury features), the Lincoln Town Car (its more upscale sibling, offering greater luxury and refinement), and domestic rivals like the Buick LeSabre or Oldsmobile Aurora (though the Aurora was discontinued before 2004). Internationally, it might be loosely compared to entry-level luxury sedans from Japanese manufacturers, though the Grand Marquis offered a distinctly different driving experience.

Performance: The Grand Marquis's 4.6L V8 offered adequate power for comfortable cruising and highway merging, a characteristic shared with the Crown Victoria. The Lincoln Town Car offered similar performance but with a more refined powertrain. American V6 options in rivals like the Buick LeSabre were generally less powerful but more fuel-efficient.

Features: The Grand Marquis, especially in LS trim, offered a good array of comfort and convenience features for its era, including leather seats and automatic climate control. The Lincoln Town Car would typically offer even more premium amenities. Rivals like the Buick LeSabre focused on comfort and often included front-wheel-drive benefits like a slightly more spacious interior or better handling in adverse weather.

Reliability: The Panther platform (Grand Marquis, Crown Vic, Town Car) is renowned for its robust and long-lasting mechanicals, often outperforming competitors in terms of sheer durability. While all cars of this age can have issues, the Grand Marquis generally holds a reputation for strong, if unspectacular, reliability. Some rivals, particularly those with more complex electronics or engines, might present more frequent repair needs.

Price: The Grand Marquis occupied a middle ground between the more utilitarian Crown Victoria and the premium Lincoln Town Car. On the used market, it offers a compelling blend of size and comfort at a very attractive price point.

Alternatives:
- Ford Crown Victoria: For a similar experience with fewer luxury appointments and a lower price point.
- Lincoln Town Car: If a higher level of luxury and a more commanding presence are desired, and the budget allows.
- Buick LeSabre: A front-wheel-drive alternative that offers a comfortable ride and decent V6 power, often with better fuel economy and a slightly different, more rounded styling. It might appeal to those who prefer FWD handling.

Ultimately, the 2004 Mercury Grand Marquis remains a solid choice for those prioritizing a comfortable, spacious, and reliable large sedan at an affordable used price. Its primary weakness lies in fuel economy compared to more modern vehicles. For a similar experience with less premium feel, a Ford Crown Victoria is a good option. If more luxury is sought, the Lincoln Town Car is the step up.

Final Verdict: Is the 2004 Mercury Grand Marquis a Good Truck?

The 2004 Mercury Grand Marquis is an ideal choice for buyers prioritizing comfort, a smooth ride, and robust durability at an affordable price, particularly on the used market. It's well-suited for drivers who enjoy highway cruising, need ample interior space for passengers or cargo, and appreciate classic American sedan styling. It's less ideal for those seeking cutting-edge technology, sporty performance, or high fuel efficiency.

It is generally worth buying as a used vehicle, especially if a thorough pre-purchase inspection reveals good mechanical condition and minimal rust. The LS trim offers a more luxurious experience and is often the preferred choice. Avoid buying if fuel economy is a primary concern or if you're looking for a vehicle with advanced safety and tech features. With proper maintenance, it can provide many years of reliable service, making it a sound investment for the right buyer seeking dependable, comfortable transportation.

2004 Mercury Grand Marquis Owner Reviews

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Simon A

Simon is a contributor to VinCheck, where he provides articles and reviews on various automotive topics. His work focuses on delivering accurate and up-to-date information about used cars, helping readers make informed decisions.