Lincoln Zephyr owners have reported a total of 300 problems for their cars built in the 5 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 Lincoln Zephyr. The 2006 Lincoln Zephyr cars have the most problems reported (271 problems).
| Model Year | Number of Problems |
|---|---|
| 2011 Zephyr | |
| 2008 Zephyr | |
| 2007 Zephyr | |
| 2006 Zephyr | |
| 2003 Zephyr |
The following chart shows the 21 most common problems for Lincoln Zephyr cars. The number one most common problem is related to the vehicle's air bags (156 problems). The second most common problem is related to the vehicle's wheels (28 problems).
It would not be fair to compare the Lincoln Zephyr 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 Zephyr 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 Lincoln Zephyr 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 Lincoln Zephyr 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 |
|---|---|
| 2006 Zephyr |