139 problems have been reported for the 2018 Mazda MAZDA3. The following chart shows the 17 most common problems for 2018 Mazda MAZDA3. The number one most common problem is related to the vehicle's electrical system with 29 problems. The second most common problem is related to the vehicle's equipment (26 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 Mazda MAZDA3 in the United States are 92,501 units [1]. If the total number of problems reported by Mazda MAZDA3 owners in the last 8 years is 139, and the age of the vehicle is 8, the PPMY index can then be calculated as
PPMY Index = 139 / 92,501 / 8 * 1000 = 0.19.
For more information, refer to this page: A study of reliability comparison across Mazda MAZDA3 model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2018 Mazda MAZDA3 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 Mazda MAZDA3, the following table can be used to compare the 2018 Mazda MAZDA3 with the Mazda MAZDA3 from other model years. Note that the number of problems reported for the 2018 MAZDA3 is 139 while the average number of problems reported for the 22 model years of the Mazda MAZDA3 is 175.
| Model Year | Number of Problems |
|---|---|
| 2025 MAZDA3 | |
| 2024 MAZDA3 | |
| 2023 MAZDA3 | |
| 2022 MAZDA3 | |
| 2021 MAZDA3 | |
| 2020 MAZDA3 | |
| 2019 MAZDA3 | |
| 2018 MAZDA3 | |
| 2017 MAZDA3 | |
| 2016 MAZDA3 | |
| 2015 MAZDA3 | |
| 2014 MAZDA3 | |
| 2013 MAZDA3 | |
| 2012 MAZDA3 | |
| 2011 MAZDA3 | |
| 2010 MAZDA3 | |
| 2009 MAZDA3 | |
| 2008 MAZDA3 | |
| 2007 MAZDA3 | |
| 2006 MAZDA3 | |
| 2005 MAZDA3 | |
| 2004 MAZDA3 |