Hyundai Sonata - Problems, Statistics, and Analysis

Hyundai Sonata owners have reported a total of 10,978 problems for their cars built in the 23 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 Hyundai Sonata. The 2011 Hyundai Sonata cars have the most problems reported (3,050 problems).

Table 1. Total number of problems by model year for Hyundai Sonata

  Common problems of Hyundai Sonata

The following chart shows the 28 most common problems for Hyundai Sonata cars. The number one most common problem is related to the vehicle's steering (1,594 problems). The second most common problem is related to the vehicle's air bags (1,492 problems).

Table 2. Common problems of Hyundai Sonata

Problem Category Number of Problems
  Steering
1,594
  Air Bag
1,492
  Engine And Engine Cooling
1,478
  Electrical System
832
  Structure
729
  Service Brakes
710
  Equipment
544
  Visibility
523
  Suspension
500
  Power Train
437
   
  Exterior Lighting
420
  Vehicle Speed Control
331
  Seat Belt
326
  Electronic Stability Control
271
  Other Fuel System
180
  Wheel
137
  Gasoline Fuel System
109
  Tire
100
  Latches/locks/linkage
83
  Unknown Or Other
81
  Seats
71
  Traction Control System
7
  Parking Brake
6
  Air Brake
6
  Child Seat
5
  Hybrid Propulsion System
3
  Interior Lighting
2
  Diesel Fuel System
1

  Compare Reliability Across Model Years Using PPMY Index

It would not be fair to compare the Hyundai Sonata 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 Sonata 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 Hyundai Sonata 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 Sonata Model Years

Sonata
Model Year
Problems Sales [1] Vehicle
Age
PPMY Index
  2017 47151,8311    
0.31
  2016 90165,3992    
0.27
  2015 375242,1323    
0.52
  2014 241132,5074    
0.45
  2013 849287,9125    
0.59
  2012 944179,1906    
0.88
  2011 3,050289,9677    
1.50
  2010 32377,2428    
0.52
  2009 463159,8559    
0.32
  2008 46297,99510    
0.47
  2007 765125,18011    
0.56
  2006 1,245171,09412    
0.61
  2005 18579,94913    
0.18
  2004 222102,00714    
0.16
  2003 22676,19915    
0.20
  2002 38978,55516    
0.31
  2001 28146,27717    
0.36
  2000 37149,49618    
0.42

  Number of Problems Reported During the First Year

Another way to measure the reliability across the model years of the Hyundai Sonata 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 Sonata
20
  2017 Sonata
35
  2016 Sonata
39
  2015 Sonata
91
  2014 Sonata
42
  2013 Sonata
97
  2012 Sonata
90
  2011 Sonata
391
  2010 Sonata
28
  2009 Sonata
26
  2008 Sonata
32
  2007 Sonata
49
  2006 Sonata
81
  2005 Sonata
16
  2004 Sonata
9
  2003 Sonata
19
  2002 Sonata
30
  2001 Sonata
25
  2000 Sonata
36
  1999 Sonata
14
  1998 Sonata
1
  1997 Sonata
3
  1996 Sonata
4


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