Jeep Liberty - Problems, Statistics, and Analysis

Jeep Liberty owners have reported a total of 10,337 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 Jeep Liberty. The 2002 Jeep Liberty cars have the most problems reported (2,227 problems).

Table 1. Total number of problems by model year for Jeep Liberty

Model Year Number of Problems
  2012 Liberty
398
  2011 Liberty
175
  2010 Liberty
201
  2009 Liberty
112
  2008 Liberty
620
  2007 Liberty
799
  2006 Liberty
1,576
  2005 Liberty
1,308
  2004 Liberty
1,287
  2003 Liberty
1,616
  2002 Liberty
2,227
  2001 Liberty
11
  2000 Liberty
7

  Common problems of Jeep Liberty

The following chart shows the 27 most common problems for Jeep Liberty cars. The number one most common problem is related to the vehicle's suspension (1,819 problems). The second most common problem is related to the vehicle's air bags (1,237 problems).

Table 2. Common problems of Jeep Liberty

Problem Category Number of Problems
  Suspension
1,819
  Air Bag
1,237
  Other Fuel System
1,108
  Visibility
997
  Electrical System
757
  Structure
679
  Gasoline Fuel System
535
  Engine And Engine Cooling
511
  Equipment
484
  Power Train
432
   
  Service Brakes
296
  Steering
294
  Seat Belt
209
  Exterior Lighting
202
  Vehicle Speed Control
174
  Wheel
114
  Unknown Or Other
111
  Tire
86
  Electronic Stability Control
81
  Latches/locks/linkage
70
  Seats
53
  Diesel Fuel System
42
  Parking Brake
16
  Air Brake
15
  Traction Control System
7
  Interior Lighting
6
  Child Seat
2

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Jeep Liberty 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 Liberty 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 Jeep Liberty 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 Liberty Model Years

Liberty
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2012 39825,0176    
2.65
  2011 17512,0047    
2.08
  2010 2019,3408    
2.69
  2009 1126,0999    
2.04
  2008 62021,39110    
2.90
  2007 79920,80611    
3.49
  2006 1,57632,46612    
4.05
  2005 1,30836,49213    
2.76
  2004 1,28741,49114    
2.22
  2003 1,61643,27415    
2.49
  2002 2,22747,83416    
2.91

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Jeep Liberty 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
  2012 Liberty
22
  2011 Liberty
15
  2010 Liberty
14
  2009 Liberty
5
  2008 Liberty
24
  2007 Liberty
50
  2006 Liberty
87
  2005 Liberty
57
  2004 Liberty
54
  2003 Liberty
78
  2002 Liberty
96


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