10 problems have been reported for the 2009 Lincoln Navigator. The following chart shows the 5 most common problems for 2009 Lincoln Navigator. The number one most common problem is related to the vehicle's electrical system with 3 problems. The second most common problem is related to the vehicle's engine and engine cooling (3 problems).
| Problem Category | Number of Problems |
|---|---|
| Electrical System | |
| Engine And Engine Cooling | |
| Equipment | |
| Tire | |
| Service Brakes |
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 2009 Lincoln Navigator in the United States are 3,583 units [1]. If the total number of problems reported by Lincoln Navigator owners in the last 13 years is 10, and the age of the vehicle is 13, the PPMY index can then be calculated as
PPMY Index = 10 / 3,583 / 13 * 1000 = 0.21.
For more information, refer to this page: A study of reliability comparison across Lincoln Navigator model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 Lincoln Navigator in 2009.
| Service Year | Number of Problems |
|---|---|
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used Lincoln Navigator, the following table can be used to compare the 2009 Lincoln Navigator with the Lincoln Navigator from other model years. Note that the number of problems reported for the 2009 Navigator is 10 while the average number of problems reported for the 24 model years of the Lincoln Navigator is 56.