Saturn Astra - Problems, Statistics, and Analysis

Saturn Astra owners have reported a total of 173 problems for their cars built in the 2 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 Saturn Astra. The 2008 Saturn Astra cars have the most problems reported (171 problems).

Table 1. Total number of problems by model year for Saturn Astra

Model Year Number of Problems
  2009 Astra
2
  2008 Astra
171

  Common problems of Saturn Astra

The following chart shows the 16 most common problems for Saturn Astra cars. The number one most common problem is related to the vehicle's air bags (92 problems). The second most common problem is related to the vehicle's electrical system (19 problems).

Table 2. Common problems of Saturn Astra

Problem Category Number of Problems
  Air Bag
92
  Electrical System
19
  Power Train
13
  Engine And Engine Cooling
9
  Equipment
8
  Visibility
8
  Steering
4
  Vehicle Speed Control
4
  Structure
4
  Tire
4
   
  Wheel
2
  Other Fuel System
2
  Service Brakes
1
  Suspension
1
  Exterior Lighting
1
  Electronic Stability Control
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Saturn Astra 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 Astra 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 Saturn Astra 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 Astra Model Years

Astra
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2009 269    
37.04
  2008 17118,28610    
0.94


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