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2009 Chevrolet Cobalt - Problems, Statistics, and Analysis

small car iamge Common problems of the 2009 Chevrolet Cobalt

765 problems have been reported for the 2009 Chevrolet Cobalt. The following chart shows the 24 most common problems for 2009 Chevrolet Cobalt. The number one most common problem is related to the vehicle's service brakes, hydraulic with 154 problems. The second most common problem is related to the vehicle's steering (146 problems).

Table 1. Common problems of the 2009 Chevrolet Cobalt

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 Cobalt in the United States are 141,588 units [1]. If the total number of problems reported by Chevrolet Cobalt owners in the last 8 years is 765, and the age of the vehicle is 8, the PPMY index can then be calculated as

      PPMY Index = 765 / 141,588 / 8 * 1000 = 0.68.

For more information, refer to this page: A study of reliability comparison across Chevrolet Cobalt 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 Cobalt in 2009.

Table 2. PPMY Index and Problem Occurrence Trend

Service Year Number of Problems
  2009
1
  2010
107
  2011
82
  2012
70
  2013
55
  2014
167
  2015
62
  2016
55
  2017
41

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

When making the decision between buying a new or used Chevrolet Cobalt, the following table can be used to compare the 2009 Chevrolet Cobalt with the Chevrolet Cobalt from other model years. Note that the number of problems reported for the 2009 Cobalt is 765 while the average number of problems reported for the 11 model years of the Chevrolet Cobalt is 743.

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

Model Year Number of Problems
  2012 Cobalt
1
  2011 Cobalt
1
  2010 Cobalt
532
  2009 Cobalt
765
  2008 Cobalt
897
  2007 Cobalt
1,619
  2006 Cobalt
2,536
  2005 Cobalt
1,826
  2002 Cobalt
2
  2000 Cobalt
3
  1996 Cobalt
1


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Related:  
Chevrolet Cobalt Service Bulletins
Chevrolet Cobalt Safety Recalls
Chevrolet Cobalt Defect Investigations
Chevrolet Cobalt fuel economy