168 problems have been reported for the 1998 Mercury Grand Marquis. The following chart shows the 21 most common problems for 1998 Mercury Grand Marquis. The number one most common problem is related to the vehicle's engine and engine cooling with 30 problems. The second most common problem is related to the vehicle's exterior lighting (17 problems).
The following chart shows the number of problems reported during each of the service years since the debut of the 1998 Mercury Grand Marquis in 1998.
| Service Year | Number of Problems |
|---|---|
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 | |
| 2004 | |
| 2003 | |
| 2002 | |
| 2001 | |
| 2000 | |
| 1999 | |
| 1998 |
When making the decision between buying a new or used Mercury Grand Marquis, the following table can be used to compare the 1998 Mercury Grand Marquis with the Mercury Grand Marquis from other model years. Note that the number of problems reported for the 1998 Grand Marquis is 168 while the average number of problems reported for the 16 model years of the Mercury Grand Marquis is 208.