63 problems have been reported for the 2018 Lincoln Navigator. The following chart shows the 16 most common problems for 2018 Lincoln Navigator. The number one most common problem is related to the vehicle's power train with 17 problems. The second most common problem is related to the vehicle's engine and engine cooling (11 problems).
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 2018 Lincoln Navigator in the United States are 17,316 units [1]. If the total number of problems reported by Lincoln Navigator owners in the last 8 years is 63, and the age of the vehicle is 8, the PPMY index can then be calculated as
PPMY Index = 63 / 17,316 / 8 * 1000 = 0.45.
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 2018 Lincoln Navigator in 2018.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 |
When making the decision between buying a new or used Lincoln Navigator, the following table can be used to compare the 2018 Lincoln Navigator with the Lincoln Navigator from other model years. Note that the number of problems reported for the 2018 Navigator is 63 while the average number of problems reported for the 28 model years of the Lincoln Navigator is 61.