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Audi A4 - Problems, Statistics, and Analysis

Audi A4 owners have reported a total of 2,625 problems for their cars built in the 22 model years listed in the chart below. The chart shows the number of problems reported across all service years for each given model year of the Audi A4. The 2006 Audi A4 cars have the most problems reported (309 problems).

Table 1. Total number of problems by model year for Audi A4

Model Year Number of Problems
  2017 A4
19
  2016 A4
3
  2015 A4
5
  2014 A4
17
  2013 A4
45
  2012 A4
16
  2011 A4
31
  2010 A4
47
  2009 A4
126
  2008 A4
167
  2007 A4
189
  2006 A4
309
  2005 A4
231
  2004 A4
183
  2003 A4
202
  2002 A4
175
  2001 A4
128
  2000 A4
94
  1999 A4
193
  1998 A4
256
  1997 A4
100
  1996 A4
89

  Common problems of Audi A4

The following chart shows the 26 most common problems for Audi A4 cars. The number one most common problem is related to the vehicle's air bags (423 problems). The second most common problem is related to the vehicle's exterior lighting (338 problems).

Table 2. Common problems of Audi A4

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Audi A4 of an older model year to newer model years since older vehicles have been in service longer and thus are expected to have more problems. In order to compare the reliability across A4 model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index indicates greater reliability of the given model year cars.

    PPMY = P / S / Y * 1000,

where P = total problems reported during the life of a Audi A4 model year; S = total units sold of the model year; Y = years since the debut of the model year (the age of the vehicle).

The results are shown in Table 3.

Table 3. Use PPMY Index to Compare Reliability Across A4 Model Years

A4
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2016 318,4571    
0.16
  2016 32,5001    
1.20
  2015 528,9932    
0.09
  2015 53,0622    
0.82
  2014 1737,3143    
0.15
  2014 174,9683    
1.14
  2013 4539,8934    
0.28
  2013 456,9574    
1.62
  2012 1631,5615    
0.10
  2011 3135,0796    
0.15
  2010 4730,8637    
0.22
  2009 12639,0698    
0.40
  2008 16745,4179    
0.41
  2007 18950,78110    
0.37
  2006 30947,67711    
0.59
  2005 23147,28012    
0.41
  2004 18346,70413    
0.30
  2003 20247,48714    
0.30
  2002 17538,46815    
0.30
  2001 12843,01516    
0.19
  2000 9425,04517    
0.22

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Audi A4 is to use the total number of problems reported during the vehicle's first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicle's; first service year

Model YearProblems Reported
  2017 A4
11
  2016 A4
1
  2014 A4
8
  2013 A4
11
  2012 A4
2
  2010 A4
10
  2009 A4
8
  2008 A4
4
  2007 A4
9
  2006 A4
7
  2005 A4
8
  2004 A4
23
  2003 A4
10
  2002 A4
59
  2001 A4
9
  2000 A4
16
  1999 A4
18
  1998 A4
17
  1997 A4
3
  1996 A4
3



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