Toyota Yaris - Problems, Statistics, and Analysis

Toyota Yaris owners have reported a total of 976 problems for their cars built in the 13 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 Toyota Yaris. The 2007 Toyota Yaris cars have the most problems reported (342 problems).

Table 1. Total number of problems by model year for Toyota Yaris

Model Year Number of Problems
  2018 Yaris
3
  2017 Yaris
10
  2016 Yaris
3
  2015 Yaris
13
  2014 Yaris
2
  2013 Yaris
8
  2012 Yaris
31
  2011 Yaris
26
  2010 Yaris
110
  2009 Yaris
122
  2008 Yaris
297
  2007 Yaris
342
  2006 Yaris
9

  Common problems of Toyota Yaris

The following chart shows the 25 most common problems for Toyota Yaris cars. The number one most common problem is related to the vehicle's air bags (367 problems). The second most common problem is related to the vehicle's service brakes, hydraulic (93 problems).

Table 2. Common problems of Toyota Yaris

Problem Category Number of Problems
  Air Bag
367
  Service Brakes
93
  Vehicle Speed Control
61
  Electrical System
59
  Structure
45
  Seats
42
  Steering
37
  Engine And Engine Cooling
35
  Suspension
32
  Seat Belt
30
   
  Equipment
29
  Visibility
25
  Power Train
23
  Wheel
17
  Other Fuel System
16
  Gasoline Fuel System
13
  Exterior Lighting
11
  Tire
11
  Unknown Or Other
11
  Electronic Stability Control
7
  Latches/locks/linkage
3
  Parking Brake
3
  Traction Control System
3
  Interior Lighting
2
  Air Brake
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Toyota Yaris 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 Yaris 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 Toyota Yaris 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 Yaris Model Years

Yaris
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2018 31,6881    
1.78
  2017 1011,3952    
0.44
  2016 38,9403    
0.11
  2015 1326,9054    
0.12
  2014 224,3985    
0.02
  2013 826,8346    
0.05
  2012 3154,8897    
0.08
  2011 2624,8508    
0.13
  2010 11063,3139    
0.19
  2009 12272,83010    
0.17
  2008 297120,84111    
0.22
  2007 342159,29212    
0.18
  2006 92,57213    
0.27

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Toyota Yaris 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
  2018 Yaris
3
  2017 Yaris
5
  2016 Yaris
1
  2015 Yaris
4
  2014 Yaris
1
  2013 Yaris
1
  2012 Yaris
1
  2010 Yaris
16
  2009 Yaris
20
  2008 Yaris
12
  2007 Yaris
17
  2006 Yaris
2


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