Volvo C30 - Problems, Statistics, and Analysis

Volvo C30 owners have reported a total of 37 problems for their cars built in the 7 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 Volvo C30. The 2011 Volvo C30 cars have the most problems reported (11 problems).

Table 1. Total number of problems by model year for Volvo C30

Model Year Number of Problems
  2013 C30
1
  2012 C30
7
  2011 C30
11
  2010 C30
4
  2009 C30
3
  2008 C30
9
  2007 C30
2

  Common problems of Volvo C30

The following chart shows the 17 most common problems for Volvo C30 cars. The number one most common problem is related to the vehicle's suspension (5 problems). The second most common problem is related to the vehicle's vehicle speed control (4 problems).

Table 2. Common problems of Volvo C30

Problem Category Number of Problems
  Suspension
5
  Vehicle Speed Control
4
  Engine And Engine Cooling
4
  Visibility
4
  Equipment
3
  Steering
3
  Tire
2
  Air Bag
2
  Electrical System
2
  Electronic Stability Control
1
   
  Exterior Lighting
1
  Power Train
1
  Structure
1
  Wheel
1
  Seats
1
  Service Brakes
1
  Seat Belt
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Volvo C30 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 C30 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 Volvo C30 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 C30 Model Years

C30
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2013 12,4855    
0.08
  2012 73,0826    
0.38
  2011 115,9357    
0.26
  2010 41,3428    
0.37
  2009 34,0429    
0.08
  2008 96,09810    
0.15


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