2009 Chevrolet Impala - Problems, Statistics, and Analysis

small car iamge Common problems of the 2009 Chevrolet Impala

1,101 problems have been reported for the 2009 Chevrolet Impala. The following chart shows the 23 most common problems for 2009 Chevrolet Impala. The number one most common problem is related to the vehicle's electrical system with 175 problems. The second most common problem is related to the vehicle's air bags (170 problems).

Table 1. Common problems of the 2009 Chevrolet Impala

small car iamge PPMY Index and Problem Occurrence Trend

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 Chevrolet Impala in the United States are 192,926 units [1]. If the total number of problems reported by Chevrolet Impala owners in the last 9 years is 1101, and the age of the vehicle is 9, the PPMY index can then be calculated as

      PPMY Index = 1101 / 192,926 / 9 * 1000 = 0.63.

For more information, refer to this page: A study of reliability comparison across Chevrolet Impala model year vehicles.

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

Table 2. PPMY Index and Problem Occurrence Trend

Service Year Number of Problems
  2018
26
  2017
69
  2016
117
  2015
168
  2014
282
  2013
197
  2012
93
  2011
67
  2010
53
  2009
29

small car iamge Compare the 2009 Chevrolet Impala with Other Model Years

When making the decision between buying a new or used Chevrolet Impala, the following table can be used to compare the 2009 Chevrolet Impala with the Chevrolet Impala from other model years. Note that the number of problems reported for the 2009 Impala is 1,101 while the average number of problems reported for the 23 model years of the Chevrolet Impala is 481.

Table 3. Compare the 2009 Chevrolet Impala with other model years

Model Year Number of Problems
  2018 Impala
1
  2017 Impala
16
  2016 Impala
37
  2015 Impala
91
  2014 Impala
290
  2013 Impala
324
  2012 Impala
276
  2011 Impala
626
  2010 Impala
570
  2009 Impala
1,101
  2008 Impala
1,008
  2007 Impala
738
  2006 Impala
682
  2005 Impala
695
  2004 Impala
1,205
  2003 Impala
773
  2002 Impala
875
  2001 Impala
787
  2000 Impala
884
  1999 Impala
4
  1998 Impala
4
  1997 Impala
1
  1996 Impala
89


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