66 problems have been reported for the 2015 Cadillac CTS. The following chart shows the 14 most common problems for 2015 Cadillac CTS. The number one most common problem is related to the vehicle's power train with 19 problems. The second most common problem is related to the vehicle's equipment (9 problems).
| Problem Category | Number of Problems |
|---|---|
| Power Train | |
| Equipment | |
| Service Brakes | |
| Suspension | |
| Electrical System | |
| Engine And Engine Cooling | |
| Vehicle Speed Control | |
| Wheel | |
| Steering | |
| Seats | |
| Exterior Lighting | |
| Electronic Stability Control | |
| Structure | |
| Tire |
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 2015 Cadillac CTS in the United States are 12,577 units [1]. If the total number of problems reported by Cadillac CTS owners in the last 10 years is 66, and the age of the vehicle is 10, the PPMY index can then be calculated as
PPMY Index = 66 / 12,577 / 10 * 1000 = 0.52.
For more information, refer to this page: A study of reliability comparison across Cadillac CTS model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2015 Cadillac CTS in 2015.
| Service Year | Number of Problems |
|---|---|
| 2025 | |
| 2024 | |
| 2023 | |
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 |
When making the decision between buying a new or used Cadillac CTS, the following table can be used to compare the 2015 Cadillac CTS with the Cadillac CTS from other model years. Note that the number of problems reported for the 2015 CTS is 66 while the average number of problems reported for the 17 model years of the Cadillac CTS is 167.