Jaguar XK - Problems, Statistics, and Analysis

Jaguar XK owners have reported a total of 54 problems for their cars built in the 12 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 Jaguar XK. The 2007 Jaguar XK cars have the most problems reported (16 problems).

Table 1. Total number of problems by model year for Jaguar XK

Model Year Number of Problems
  2015 XK
1
  2014 XK
7
  2013 XK
1
  2012 XK
2
  2011 XK
4
  2010 XK
2
  2009 XK
2
  2008 XK
7
  2007 XK
16
  2006 XK
4
  2005 XK
3
  2000 XK
5

  Common problems of Jaguar XK

The following chart shows the 18 most common problems for Jaguar XK cars. The number one most common problem is related to the vehicle's vehicle speed control (9 problems). The second most common problem is related to the vehicle's electrical system (6 problems).

Table 2. Common problems of Jaguar XK

Problem Category Number of Problems
  Vehicle Speed Control
9
  Electrical System
6
  Engine And Engine Cooling
6
  Structure
5
  Service Brakes
4
  Power Train
3
  Equipment
3
  Air Bag
3
  Other Fuel System
2
  Steering
2
   
  Gasoline Fuel System
2
  Exterior Lighting
2
  Wheel
2
  Electronic Stability Control
1
  Suspension
1
  Unknown Or Other
1
  Visibility
1
  Tire
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Jaguar XK 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 XK 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 Jaguar XK 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 XK Model Years

XK
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2015 17093    
0.47
  2014 71,2924    
1.35
  2013 11,4615    
0.14
  2012 21,3206    
0.25
  2011 42,1397    
0.27
  2010 22,2018    
0.11
  2009 21,5989    
0.14
  2008 72,81310    
0.25
  2007 167,99211    
0.18


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