22 problems have been reported for the 2004 Subaru Baja. The following chart shows the 12 most common problems for 2004 Subaru Baja. The number one most common problem is related to the vehicle's fuel system, gasoline with 6 problems. The second most common problem is related to the vehicle's fuel system, other (5 problems).
| Problem Category | Number of Problems |
|---|---|
| Gasoline Fuel System | |
| Other Fuel System | |
| Air Bag | |
| Engine And Engine Cooling | |
| Electronic Stability Control | |
| Service Brakes | |
| Vehicle Speed Control | |
| Power Train | |
| Wheel | |
| Steering | |
| Seat Belt | |
| Electrical System |
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 2004 Subaru Baja in the United States are 2,266 units [1]. If the total number of problems reported by Subaru Baja owners in the last 18 years is 22, and the age of the vehicle is 18, the PPMY index can then be calculated as
PPMY Index = 22 / 2,266 / 18 * 1000 = 0.54.
For more information, refer to this page: A study of reliability comparison across Subaru Baja model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2004 Subaru Baja in 2004.
| Service Year | Number of Problems |
|---|---|
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 | |
| 2008 | |
| 2007 | |
| 2006 | |
| 2005 | |
| 2004 |
When making the decision between buying a new or used Subaru Baja, the following table can be used to compare the 2004 Subaru Baja with the Subaru Baja from other model years. Note that the number of problems reported for the 2004 Baja is 22 while the average number of problems reported for the 4 model years of the Subaru Baja is 33.