Toyota Prius - Problems, Statistics, and Analysis

Toyota Prius owners have reported a total of 12,650 problems for their cars built in the 19 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 Prius. The 2010 Toyota Prius cars have the most problems reported (2,835 problems).

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

Model Year Number of Problems
  2018 Prius
13
  2017 Prius
65
  2016 Prius
129
  2015 Prius
73
  2014 Prius
143
  2013 Prius
223
  2012 Prius
359
  2011 Prius
343
  2010 Prius
2,835
  2009 Prius
540
  2008 Prius
1,646
  2007 Prius
2,252
  2006 Prius
1,585
  2005 Prius
1,223
  2004 Prius
702
  2003 Prius
115
  2002 Prius
190
  2001 Prius
210
  2000 Prius
4

  Common problems of Toyota Prius

The following chart shows the 27 most common problems for Toyota Prius cars. The number one most common problem is related to the vehicle's exterior lighting (3,359 problems). The second most common problem is related to the vehicle's service brakes, hydraulic (3,247 problems).

Table 2. Common problems of Toyota Prius

Problem Category Number of Problems
  Exterior Lighting
3,359
  Service Brakes
3,247
  Electrical System
1,254
  Vehicle Speed Control
941
  Engine And Engine Cooling
590
  Equipment
459
  Air Bag
345
  Power Train
338
  Steering
335
  Structure
324
   
  Visibility
217
  Electronic Stability Control
187
  Traction Control System
173
  Other Fuel System
152
  Unknown Or Other
143
  Tire
125
  Gasoline Fuel System
98
  Seat Belt
71
  Suspension
70
  Latches/locks/linkage
53
  Wheel
50
  Seats
40
  Air Brake
26
  Hybrid Propulsion System
26
  Parking Brake
16
  Interior Lighting
8
  Child Seat
3

  Compare Reliability Across Model Years Using PPMY Index

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

Prius
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2005 1,223112,12914    
0.78
  2004 70247,97015    
0.98
  2003 11513,82716    
0.52
  2002 19022,73717    
0.49
  2001 21015,77318    
0.74

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Toyota Prius 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 Prius
13
  2017 Prius
34
  2016 Prius
44
  2015 Prius
20
  2014 Prius
43
  2013 Prius
50
  2012 Prius
83
  2011 Prius
33
  2010 Prius
1111
  2009 Prius
149
  2008 Prius
151
  2007 Prius
121
  2006 Prius
89
  2005 Prius
135
  2004 Prius
65
  2003 Prius
8
  2002 Prius
14
  2001 Prius
23


Switch Model:
Select Year:
Toyota Prius Service Bulletins icon-go-page
Toyota Prius Safety Recalls icon-go-page
Toyota Prius Defect Investigations icon-go-page
Toyota Prius fuel economy icon-go-page
Compare reliability:
vs.