202 problems have been reported for the 1999 Mercury Grand Marquis. The following chart shows the 22 most common problems for 1999 Mercury Grand Marquis. The number one most common problem is related to the vehicle's engine and engine cooling with 33 problems. The second most common problem is related to the vehicle's exterior lighting (20 problems).
The following chart shows the number of problems reported during each of the service years since the debut of the 1999 Mercury Grand Marquis in 1999.
| Service Year | Number of Problems |
|---|---|
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 | |
| 2004 | |
| 2003 | |
| 2002 | |
| 2001 | |
| 2000 | |
| 1999 |
When making the decision between buying a new or used Mercury Grand Marquis, the following table can be used to compare the 1999 Mercury Grand Marquis with the Mercury Grand Marquis from other model years. Note that the number of problems reported for the 1999 Grand Marquis is 202 while the average number of problems reported for the 16 model years of the Mercury Grand Marquis is 213.