Infiniti QX56 - Problems, Statistics, and Analysis

Infiniti QX56 owners have reported a total of 499 problems for their cars built in the 10 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 Infiniti QX56. The 2004 Infiniti QX56 cars have the most problems reported (129 problems).

Table 1. Total number of problems by model year for Infiniti QX56

Model Year Number of Problems
  2013 QX56
8
  2012 QX56
39
  2011 QX56
54
  2010 QX56
22
  2009 QX56
10
  2008 QX56
53
  2007 QX56
24
  2006 QX56
78
  2005 QX56
82
  2004 QX56
129

  Common problems of Infiniti QX56

The following chart shows the 22 most common problems for Infiniti QX56 cars. The number one most common problem is related to the vehicle's service brakes, hydraulic (173 problems). The second most common problem is related to the vehicle's engine and engine cooling (59 problems).

Table 2. Common problems of Infiniti QX56

Problem Category Number of Problems
  Service Brakes
173
  Engine And Engine Cooling
59
  Other Fuel System
45
  Electrical System
41
  Suspension
31
  Equipment
24
  Air Bag
24
  Power Train
19
  Steering
15
  Exterior Lighting
13
   
  Structure
9
  Gasoline Fuel System
8
  Electronic Stability Control
7
  Vehicle Speed Control
7
  Visibility
7
  Seats
6
  Wheel
3
  Seat Belt
3
  Unknown Or Other
2
  Air Brake
1
  Latches/locks/linkage
1
  Tire
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Infiniti QX56 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 QX56 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 Infiniti QX56 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 QX56 Model Years

QX56
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2011 5416,7638    
0.40
  2010 229,4309    
0.26
  2009 102,66810    
0.37
  2008 5313,45111    
0.36
  2007 246,47012    
0.31
  2006 7813,44113    
0.45
  2005 8212,81914    
0.46
  2004 12912,43015    
0.69

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Infiniti QX56 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
  2013 QX56
1
  2012 QX56
3
  2011 QX56
3
  2010 QX56
3
  2008 QX56
2
  2006 QX56
2
  2005 QX56
6
  2004 QX56
25


Switch Model:
Select Year:
Safety Ratings of QX56 Cars
Fuel Economy of QX56 Vehicles
QX56 Service Bulletins
QX56 Safety Recalls
Compare reliability:
vs.