32 problems have been reported for the 2021 Lincoln Navigator. The following chart shows the 13 most common problems for 2021 Lincoln Navigator. The number one most common problem is related to the vehicle's engine and engine cooling with 6 problems. The second most common problem is related to the vehicle's visibility (4 problems).
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling | |
| Visibility | |
| Power Train | |
| Equipment | |
| Steering | |
| Back Over Prevention | |
| Other Fuel System | |
| Electrical System | |
| Vehicle Speed Control | |
| Seats | |
| Exterior Lighting | |
| Gasoline Fuel System | |
| Suspension |
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 2021 Lincoln Navigator in the United States are 14,684 units [1]. If the total number of problems reported by Lincoln Navigator owners in the last 5 years is 32, and the age of the vehicle is 5, the PPMY index can then be calculated as
PPMY Index = 32 / 14,684 / 5 * 1000 = 0.44.
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 2021 Lincoln Navigator in 2021.
| Service Year | Number of Problems |
|---|---|
| 2026 | |
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 |
When making the decision between buying a new or used Lincoln Navigator, the following table can be used to compare the 2021 Lincoln Navigator with the Lincoln Navigator from other model years. Note that the number of problems reported for the 2021 Navigator is 32 while the average number of problems reported for the 28 model years of the Lincoln Navigator is 61.