2009 Subaru Impreza - Problems, Statistics, and Analysis

Common problems of the 2009 Subaru Impreza

105 problems have been reported for the 2009 Subaru Impreza.
The following chart shows the 15 most common problems for 2009 Subaru Impreza.
The number one most common problem is related to the vehicle's power train
with 23 problems.
The second most common problem is related to the vehicle's structure
(18 problems).

Table 1. Common problems of the 2009 Subaru Impreza

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 2009 Subaru Impreza in the United States are 42,533 units [1]. If the total number of problems reported by Subaru Impreza owners in the last 9 years is 105, and the age of the vehicle is 9, the PPMY index can then be calculated as

The following chart shows the number of problems reported during each of the service
years since the debut of the 2009 Subaru Impreza in 2009.

Table 2. PPMY Index and Problem Occurrence Trend

Service Year

Number of Problems

2018

9

2017

9

2016

15

2015

7

2014

12

2013

16

2012

16

2011

4

2010

14

2009

3

Compare the 2009 Subaru Impreza with Other Model Years

When making the decision between buying a new or used Subaru Impreza,
the following table can be used to compare the 2009 Subaru Impreza
with the Subaru Impreza from other model years.
Note that the number of problems reported for the 2009 Impreza is 105
while the average number of problems reported for the 23 model years of the Subaru Impreza is 79.

Table 3. Compare the 2009 Subaru Impreza with other model years