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1998 Mercury Grand Marquis Overview, Reviews, Ratings & Specs

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Jovan | November 6, 2025
The 1998 Mercury Grand Marquis is a full-size, rear-wheel-drive sedan that served as a luxurious counterpart to the Ford Crown Victoria. Produced from 1975 to 2011, the 1998 model year falls within the fourth generation. Key trims included the GS and the more upscale LS. It was popular for its spacious interior, smooth ride, and robust construction, offering a comfortable and dependable driving experience that appealed to a mature demographic and those seeking American comfort car values. Pricing when new ranged from approximately $25,000 to $30,000 depending on trim and options.
The Good

The 1998 Grand Marquis boasts exceptional comfort with its plush ride and cavernous interior, appealing to those who value a serene journey. Its V8 engine offers capable, if not sporty, performance, and its legendary reliability and durability provide practical peace of mind. The understated, classic design offers timeless appeal, and its value proposition as a well-built, affordable used car is undeniable for both budget-conscious and comfort-seeking buyers.

The Bad

Common weaknesses for the 1998 Mercury Grand Marquis include potential issues with the air suspension (if equipped), transmission problems (especially with higher mileage), and rust, particularly in areas with harsh winters. Electrical gremlins, such as faulty window regulators or power lock actuators, can also surface. Interior wear and tear on seats and dashboard plastics are also worth inspecting.

1998 Mercury Grand Marquis: Quick Overview

  • Engine Options: The 1998 Mercury Grand Marquis primarily came with a 4.6L V8 engine.
  • Horsepower: The standard 4.6L V8 engine produced approximately 200-215 horsepower, depending on the specific tune and year.
  • Fuel Economy: Estimated EPA fuel economy ratings were around 15 mpg city and 22 mpg highway for the 4.6L V8. These figures can vary based on driving conditions and maintenance.
  • 0-60 Times: Acceleration from 0 to 60 mph was typically in the range of 8.5 to 10 seconds, reflecting its comfortable cruiser nature rather than sporty performance.
  • Towing Capacity: While not its primary purpose, the Grand Marquis could be equipped with a towing package, allowing for moderate towing capabilities, typically around 2,000-5,000 lbs, suitable for small trailers or recreational equipment.
  • Trim Level Features:
       GS Trim: This base trim offered essential comfort and convenience features, including cloth upholstery, power windows and door locks, air conditioning, cruise control, a tilt steering wheel, and an AM/FM stereo with cassette player. Standard safety features included front airbags and anti-lock brakes.
  •    LS Trim: The LS trim added a touch of luxury and enhanced features over the GS. This typically included leather upholstery (often optional on GS), a power adjustable driver's seat, upgraded audio system, automatic climate control, alloy wheels, and often fog lamps. Some LS models might have also offered optional features like a power sunroof, heated seats, and a CD player.

1998 Mercury Grand Marquis Specifications

Vehicle Information
Year 1998
Make Mercury
Model Grand Marquis
Trim -
Style -
Type Sedan
Category Large Car
Manufacturing Details
Made In Canada
Manufacturing City HAZELWOOD (ST. LOUIS)
Dimensions
Doors 4-Door
Curb Weight 3917 pounds
Gross Vehicle Weight Rating -
Overall Height -
Overall Length -
Overall Width -
Wheelbase Length -
Standard Seating -
Engine & Performance
Engine 4.6 8
Engine Size 4.6L
Engine Cylinders 8
Transmission -
Transmission Type Automatic
Transmission Speeds -
Drivetrain Rear-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 1998 Mercury Grand Marquis Have?

The 1998 Mercury Grand Marquis, sharing its platform with the Ford Crown Victoria, exhibits a generally strong reputation for reliability, especially in its powertrain. However, like any vehicle of this age, certain issues are more frequently reported by owners. One common area of concern, particularly with higher mileage examples, is the transmission. Problems can range from rough shifting to complete failure, often necessitating rebuilds or replacements. The rear air suspension system, if equipped, can be a source of trouble, with leaking air springs or compressor failures leading to a saggy rear end. This can be costly to repair or replace, leading many owners to convert to conventional coil springs.

Another area to watch for is rust. While the chassis is robust, body panels, especially around the wheel wells, rocker panels, and door bottoms, can succumb to corrosion, particularly in regions that experience harsh winters with road salt. Electrical gremlins are also not uncommon. These can manifest as malfunctioning power windows and locks, intermittent dashboard lights, or issues with the climate control system. Spark plug blowouts have been reported on some 4.6L V8 engines, though this is more prevalent on earlier iterations of the modular engine. For the 1998 model year specifically, there weren't widespread major recalls that significantly impacted its long-term viability, but it's always advisable to check for any outstanding recalls with the VIN. Overall, with diligent maintenance, many 1998 Grand Marquis can achieve well over 200,000 miles, but attention to these common wear points is crucial for sustained reliability.

How long will the 1998 Mercury Grand Marquis last?

Based on owner data and anecdotal evidence, the 1998 Mercury Grand Marquis is known for its remarkable long-term durability. With regular and proper maintenance, including timely oil changes, transmission fluid flushes, and coolant replacements, it's not uncommon for these vehicles to surpass 200,000 miles. Many owners report consistently reaching 250,000 miles or even more. The robust chassis and proven V8 powertrain are the cornerstones of this longevity. However, weaknesses that tend to emerge over time include the aforementioned transmission issues, potential degradation of the air suspension system (if present), and the inevitable onset of rust on body panels in corrosive environments. Electrical components can also become more temperamental with age. Despite these potential wear points, the fundamental engineering of the Grand Marquis allows for extended service life, making it a dependable choice for those who invest in its upkeep.

What Technology & Safety Features are Included?

The 1998 Mercury Grand Marquis was equipped with technology and safety features that were standard for its era, focusing on comfort and basic driver assistance. Standard entertainment typically included an AM/FM stereo with a cassette player. Optional upgrades might have offered a CD player or a more premium sound system.

In terms of driver-assistance features, the 1998 Grand Marquis was relatively basic. Cruise control was standard, and a tilt steering wheel aided driver comfort. Anti-lock brakes (ABS) were a crucial safety feature, providing improved stopping power and control during emergency braking. For its time, this was a significant safety inclusion.

Safety was a priority, with standard dual front airbags for the driver and front passenger. The full-size, body-on-frame construction inherently provided a substantial level of passive safety. Optional safety features were limited, with the primary focus being on the standard equipment.

Crash-test ratings for this generation of Grand Marquis (and its Ford counterpart) were generally competitive for the time. While specific ratings for the 1998 model year may vary slightly by testing agency and specific test, these vehicles typically performed adequately in frontal and side-impact tests, reflecting their substantial size and structural integrity. However, it's important to note that crash safety standards and testing methodologies have evolved significantly since 1998, so its performance would be considered dated compared to modern vehicles. Technology and driver-assistance systems were not as advanced as in contemporary vehicles, with no electronic stability control or advanced driver-assist systems (ADAS) available.

What Colors Options are Available?

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1998 Mercury Grand Marquis Prices and Market Value

When new in 1998, the Mercury Grand Marquis had an MSRP ranging from approximately $25,000 for the base GS trim to around $30,000 for the more feature-laden LS trim, before adding any optional packages. The vehicle experienced significant depreciation in its early years, a common trait for large, non-luxury sedans. Today, the current used market prices for a 1998 Grand Marquis are highly variable, typically ranging from $1,500 to $5,000, heavily dependent on condition, mileage, and trim level. Vehicles in exceptional, low-mileage condition with meticulous maintenance records can command higher prices. Factors significantly affecting its resale value include the presence of rust, the condition of the transmission and engine, interior wear, and overall mechanical soundness. A well-maintained example with no major mechanical issues or rust can still hold its value reasonably well as a dependable, affordable used car.

1998 Mercury Grand Marquis Cost of Ownership

The 1998 Mercury Grand Marquis is generally considered economical to own. Insurance costs are typically moderate, especially for older drivers, reflecting its safety features and non-performance-oriented nature. Fuel costs, while not stellar due to its V8 engine, are manageable for its class, especially with careful driving. Maintenance costs are relatively low, as parts are widely available and mechanics are familiar with these robust vehicles. Major repairs, such as transmission overhauls or air suspension work, can be more expensive, but these are not constant issues. Overall, the Grand Marquis is a cost-effective vehicle to own and maintain, especially compared to many modern cars, making it an economical choice for budget-conscious buyers.

1998 Mercury Grand Marquis Fuel Efficiency

Fuel Type Gasoline
Fuel Capacity 19 gallons
City Mileage 15 miles/gallon
Highway Mileage 22 miles/gallon

1998 Mercury Grand Marquis Safety Rating

NHTSA
Side Driver Rating
Frontal Passenger Rating
Rollover Rating Not Tested
Side Rear Passenger Rating
Frontal Driver Rating
Side Driver Rating
Frontal Passenger Rating
Rollover Rating Not Tested
Side Rear Passenger Rating
Frontal Driver Rating
IIHS
Moderate Overlap Front Test Results Not Tested
Moderate Overlap Front Test Results Not Tested

1998 Mercury Grand Marquis Insurance

Insurance for a 1998 Mercury Grand Marquis is moderately priced, reflecting its status as a Sedan with strong safety ratings and
reasonable repair costs.

How Does the 1998 Mercury Grand Marquis Compare to Other Sedan?

The 1998 Mercury Grand Marquis competed in the full-size sedan segment against rivals like the Chevrolet Caprice/Impala SS (though the Caprice production ended in 1996, the Impala SS was available), Buick Roadmaster, and its Ford sibling, the Ford Crown Victoria. In terms of performance, the Grand Marquis offered a comfortable, V8-powered ride that was comparable to the Buick Roadmaster. The Impala SS, however, provided a sportier driving experience. The Ford Crown Victoria was essentially the same car, often with slightly different styling and feature packaging, making it a very similar alternative. Reliability is a strong suit for the Grand Marquis, with its Panther platform proving exceptionally durable, often surpassing competitors in long-term dependability, especially the robust V8 engines.

Features in the 1998 Grand Marquis were focused on comfort and practicality, with plush interiors and ample space. While competitive for its time, it lacked the more advanced technology that some European or Japanese rivals might have offered, though those often came at a higher price point. In terms of price, the Grand Marquis offered excellent value, providing a large, comfortable, and reliable sedan at a competitive MSRP.

Similar Alternatives:
  • Ford Crown Victoria: This is the most direct alternative. The choice between the two often comes down to personal preference in styling and specific trim availability.
  • Buick Roadmaster: Offered a similar level of comfort and V8 power, often with a slightly more upscale interior feel.
Potentially Better Alternatives (depending on priorities):
  • Toyota Avalon: If outright reliability and a more refined, albeit less spacious, ride are paramount, the Toyota Avalon is a strong contender. It generally offers better fuel economy and fewer mechanical quirks over the long haul, though it lacks the V8 power and rear-wheel-drive dynamics.
  • Later model Crown Victoria/Grand Marquis: If budget allows, stepping up to a slightly newer model year (e.g., 2000s) might offer some minor improvements in safety and features, while retaining the core strengths.
The Grand Marquis stands out for its blend of classic American comfort, V8 power, and proven longevity at an affordable price point.

Final Verdict: Is the 1998 Mercury Grand Marquis a Good Sedan?

The 1998 Mercury Grand Marquis is ideal for buyers seeking a spacious, comfortable, and exceptionally reliable full-size sedan on a budget. It's perfect for individuals or families who prioritize a smooth ride, ample passenger and trunk space, and a proven track record of durability over sporty performance. It's an excellent choice for older drivers, commuters who value comfort, or anyone looking for an affordable, dependable daily driver.

It is absolutely worth buying, but exclusively in the used market. New models are obviously unavailable. When buying used, prioritize vehicles with a documented maintenance history, minimal rust, and no significant transmission issues. The LS trim offers a touch more luxury and is generally more desirable. For its price point, it represents fantastic value, offering a substantial amount of comfortable transportation for the money, provided it has been reasonably cared for. It's a solid, no-nonsense choice for practical-minded buyers.

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Jovan

Jovan specializes in interpreting vehicle records and making sense of VIN data. With over 10 years of experience in the automotive data industry, his work ensures that every report is clear, accurate, and useful for car buyers.