33 problems have been reported for the 2010 Mercury Grand Marquis. The following chart shows the 15 most common problems for 2010 Mercury Grand Marquis. The number one most common problem is related to the vehicle's structure with 5 problems. The second most common problem is related to the vehicle's steering (5 problems).
| Problem Category | Number of Problems |
|---|---|
| Structure | |
| Steering | |
| Vehicle Speed Control | |
| Electrical System | |
| Engine And Engine Cooling | |
| Air Bag | |
| Visibility | |
| Exterior Lighting | |
| Equipment | |
| Service Brakes | |
| Suspension | |
| Wheel | |
| Power Train | |
| Seat Belt | |
| Other Fuel System |
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 2010 Mercury Grand Marquis in the United States are 27,959 units [1]. If the total number of problems reported by Mercury Grand Marquis owners in the last 15 years is 33, and the age of the vehicle is 15, the PPMY index can then be calculated as
PPMY Index = 33 / 27,959 / 15 * 1000 = 0.08.
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 2010 Mercury Grand Marquis in 2010.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 |
When making the decision between buying a new or used Mercury Grand Marquis, the following table can be used to compare the 2010 Mercury Grand Marquis with the Mercury Grand Marquis from other model years. Note that the number of problems reported for the 2010 Grand Marquis is 33 while the average number of problems reported for the 16 model years of the Mercury Grand Marquis is 217.