What's New for 2003 Mercury Grand Marquis
Knowing how much a vehicle has changed from previous model years can help provide additional context when reviewing reliability ratings. Our Editors give you the bottom-line on what's new, the pros, the cons and more.
What's New for 2003
The 2003 Grand Mark receives a number of updates. The most important ones are hidden. A new full-perimeter frame uses strong, lightweight hydroformed steel sections for the front rails to improve frontal and offset crash performance. Redesigned frame crossmembers and new optional side impact airbags improve side impact crash performance. Additionally, the new frame -- combined with a redesigned independent front suspension and new monotube shock absorbers at all four wheels -- contributes to a smoother, more controlled ride and improved handling. Other changes include a new variable ratio rack-and-pinion steering system with variable power assist and a new dual-rate brake booster that automatically supplies full braking power in a panic stop. On the inside, the seats have been changed to improve comfort and appearance, the cupholders are new, a three-point seatbelt has been added for the center rear passenger and the door trim has been redesigned for a cleaner appearance and better ergonomics. To spot a 2003 Marquis, look for the brighter headlights and subtle new styling applied to the front and rear of the vehicle. Read More
Long-Term Reliability Ratings by Identifix
Portions © 2008 by Identifix, Inc. All rights reserved
Ratings Key
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Minimal Problems |
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Moderate Problems |
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Significant Problems |
2003 Mercury Grand Marquis Reliability Rating
| Category |
Rating |
Comments |
| Engine |
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Occasional problems on this vehicle are failures of the Ignition Coils and the Fuel Pump. Failure of the Fuel Pump may prevent the vehicle from starting. The cost to repair the Ignition Coils is estimated at $105.00 for parts and $26.00 for labor for each coil needed. The cost to repair the Fuel Pump is estimated at $260.00 for parts and $195.00 for labor. All prices are estimates based on $65.00 per flat rate hour and do not include diagnostic time or any applicable sales tax. |
| Transmission & Driveline |
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| Steering & Suspension |
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| Brake |
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An occational problem with this vehicle is the Electronic Brake Control Module. This problem can cause the ABS braking system not to function. The cost to replace this problem is estimated at $403.08 or parts and 19.50 for labor. All prices are estimates based on $65 per flat rate hour and do not include diagnostic time or any applicable sales tax. |
| Heating & Air Conditioning |
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| Starting & Charging |
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An occasional problem on this vehicle is failure of the Alternator. Failure of the Alternator may prevent the vehicle from starting. The cost to repair the Alternator is estimated at $292.00 for parts and $71.50 for labor. All prices are estimates based on $65.00 per flat rate hour and do not include diagnostic time or any applicable sales tax. |
| Accessories |
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| Overall |
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4 out of 5 |
Reliability ratings displayed above reflect style specific standard features and may vary from aggregated values displayed for the same year in the historical model overview below.
Reliability History for Mercury Grand Marquis
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2003 |
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| Heating & Air Conditioning |
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| Starting & Charging |
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| Overall |
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Reliability History for Mercury
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2003 |
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2005 |
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| Transmission & Driveline |
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| Steering & Suspension |
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| Brake |
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| Heating & Air Conditioning |
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| Starting & Charging |
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| Overall |
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