Jeep Liberty - Problems, Statistics, and Analysis

Jeep Liberty owners have reported a total of 10,613 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 (2,239 problems).

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

Model Year Number of Problems
  2012 Liberty
429
  2011 Liberty
192
  2010 Liberty
235
  2009 Liberty
118
  2008 Liberty
650
  2007 Liberty
823
  2006 Liberty
1,624
  2005 Liberty
1,339
  2004 Liberty
1,311
  2003 Liberty
1,635
  2002 Liberty
2,239
  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 (1,871 problems). The second most common problem is related to the vehicle's air bags (1,259 problems).

Table 2. Common problems of Jeep Liberty

Problem Category Number of Problems
  Suspension
1,871
  Air Bag
1,259
  Other Fuel System
1,126
  Visibility
1,012
  Electrical System
785
  Structure
700
  Gasoline Fuel System
537
  Engine And Engine Cooling
533
  Equipment
514
  Power Train
446
   
  Steering
305
  Service Brakes
302
  Seat Belt
217
  Exterior Lighting
207
  Vehicle Speed Control
179
  Wheel
122
  Unknown Or Other
111
  Electronic Stability Control
88
  Tire
86
  Latches/locks/linkage
70
  Seats
55
  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 42925,0177    
2.45
  2011 19212,0048    
2.00
  2010 2359,3409    
2.80
  2009 1186,09910    
1.93
  2008 65021,39111    
2.76
  2007 82320,80612    
3.30
  2006 1,62432,46613    
3.85
  2005 1,33936,49214    
2.62
  2004 1,31141,49115    
2.11
  2003 1,63543,27416    
2.36
  2002 2,23947,83417    
2.75

  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
52
  2006 Liberty
87
  2005 Liberty
57
  2004 Liberty
54
  2003 Liberty
78
  2002 Liberty
96


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