Chevrolet Trax - Problems, Statistics, and Analysis

Chevrolet Trax owners have reported a total of 84 problems for their cars built in the 5 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 Chevrolet Trax. The 2017 Chevrolet Trax cars have the most problems reported (34 problems).

Table 1. Total number of problems by model year for Chevrolet Trax

Model Year Number of Problems
  2019 Trax
2
  2018 Trax
1
  2017 Trax
34
  2016 Trax
29
  2015 Trax
18

  Common problems of Chevrolet Trax

The following chart shows the 17 most common problems for Chevrolet Trax cars. The number one most common problem is related to the vehicle's steering (13 problems). The second most common problem is related to the vehicle's engine and engine cooling (13 problems).

Table 2. Common problems of Chevrolet Trax

Problem Category Number of Problems
  Steering
13
  Engine And Engine Cooling
13
  Electrical System
10
  Equipment
8
  Service Brakes
6
  Air Bag
5
  Electronic Stability Control
5
  Vehicle Speed Control
4
  Visibility
4
  Other Fuel System
3
   
  Seat Belt
3
  Wheel
2
  Power Train
2
  Exterior Lighting
2
  Structure
2
  Seats
1
  Suspension
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Chevrolet Trax 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 Trax 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 Chevrolet Trax 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 Trax Model Years

Trax
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2018 127,3571    
0.04
  2017 3475,5002    
0.23
  2016 2983,6313    
0.12
  2015 1855,0384    
0.08


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