Mercury Monterey owners have reported a total of 539 problems for their cars built in the 4 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Mercury Monterey. The 2004 Mercury Monterey cars have the most problems reported (337 problems).
| Model Year | Number of Problems |
|---|---|
| 2007 Monterey | |
| 2006 Monterey | |
| 2005 Monterey | |
| 2004 Monterey |
The following chart shows the 22 most common problems for Mercury Monterey cars. The number one most common problem is related to the vehicle's power train (344 problems). The second most common problem is related to the vehicle's structure (24 problems).
It would not be fair to compare the Mercury Monterey of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across Monterey model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.
PPMY = P / S / Y * 1000,
where P = total problems reported during the life of a Mercury Monterey model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).
The results are shown in Table 3.
Another way to measure the reliability across the model years of the Mercury Monterey is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.
| Model Year | Problems Reported |
|---|---|
| 2005 Monterey | |
| 2004 Monterey |
| ☘ Monterey Service Bulletins |
| ⚑ Monterey Safety Recalls |
| ☤ Monterey Defect Investigations |
| Compare Reliability: |