2005 Mercury Grand Marquis - Problems, Statistics, and Analysis

🔎 Common problems of the 2005 Mercury Grand Marquis

614 problems have been reported for the 2005 Mercury Grand Marquis. The following chart shows the 24 most common problems for 2005 Mercury Grand Marquis. The number one most common problem is related to the vehicle's exterior lighting with 290 problems. The second most common problem is related to the vehicle's electrical system (77 problems).

📈 PPMY Index and Problem Occurrence Trend

In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2005 Mercury Grand Marquis in the United States are 66,747 units [1]. If the total number of problems reported by Mercury Grand Marquis owners in the last 20 years is 614, and the age of the vehicle is 20, the PPMY index can then be calculated as

      PPMY Index = 614 / 66,747 / 20 * 1000 = 0.46.

For more information, refer to this page: A study of reliability comparison across Mercury Grand Marquis model year vehicles.

The following chart shows the number of problems reported during each of the service years since the debut of the 2005 Mercury Grand Marquis in 2005.

📊 Compare the 2005 Mercury Grand Marquis with Other Model Years

When making the decision between buying a new or used Mercury Grand Marquis, the following table can be used to compare the 2005 Mercury Grand Marquis with the Mercury Grand Marquis from other model years. Note that the number of problems reported for the 2005 Grand Marquis is 614 while the average number of problems reported for the 16 model years of the Mercury Grand Marquis is 217.

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☘ Grand Marquis Service Bulletins

⚑ Grand Marquis Safety Recalls

☤ Grand Marquis Defect Investigations