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Volvo S40 - Problems, Statistics, and Analysis



Volvo S40 owners have reported 586 problems for their cars built in the 12 model years listed in the chart below. The chart shows the number of problems reported during all service years for each model year of Volvo S40. The 2000 Volvo S40 cars have the most problems reported (161 problems).

Table 1. Total number of problems by model year for Volvo S40

Model Year Number of Problems
  2011 S40
2
  2010 S40
2
  2009 S40
5
  2008 S40
20
  2007 S40
22
  2006 S40
71
  2005 S40
80
  2004 S40
67
  2003 S40
18
  2002 S40
33
  2001 S40
105
  2000 S40
161

  Common problems of Volvo S40

The following chart shows the 24 most common problems for Volvo S40 cars. The number one most common problem is related to the vehicle's service brakes, hydraulic (120 problems). The second most common problem is related to the vehicle's electrical system (85 problems).

Table 2. Common problems of Volvo S40

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the older model year Volvo S40 to a new one in terms of the problems reported since older vehicles have been in service longer and more problems should be reported. In order to compare the reliability across S40 model years, we use the PPMY index which is defined as the problems reported per thousand vehicles per Year. A smaller PPMY index implies a better reliability for the model year under study.

    PPMY = P / S / Y * 1000

Where P = total problems reported during the life of a Volvo S40 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 result is shown in Table 3.

Table 3. Use PPMY Index to Compare Reliability Across S40 Model Years

S40
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2004 6711,41812    
0.49
  2003 1810,45813    
0.13
  2002 3313,84014    
0.17
  2001 10531,69515    
0.22
  2000 16128,31616    
0.36

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of Volvo S40 is to use the number of problems reported during the vehicles' first year in service, as shown in the Table 4.

Table 4. Number of problems in vehicles' first service year

Model YearProblems Reported
  2010 S40
1
  2009 S40
1
  2007 S40
4
  2006 S40
6
  2005 S40
13
  2004 S40
6
  2003 S40
5
  2002 S40
3
  2001 S40
16
  2000 S40
21



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