Hyundai Sonata owners have reported a total of 22,048 problems for their cars built in the 31 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 (4,561 problems).
The following chart shows the 34 most common problems for Hyundai Sonata cars. The number one most common problem is related to the vehicle's engine and engine cooling (5,074 problems). The second most common problem is related to the vehicle's steering (2,370 problems).
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.
| Sonata Model Year | Problems | Sales [1] | Vehicle Age |
PPMY Index |
|---|---|---|---|---|
| 2022 | 153 | 45,642 | 4 | |
| 2021 | 223 | 77,691 | 5 | |
| 2020 | 264 | 60,385 | 6 | |
| 2019 | 205 | 90,644 | 7 | |
| 2018 | 548 | 129,653 | 8 | |
| 2017 | 1,089 | 151,831 | 9 | |
| 2016 | 1,102 | 165,399 | 10 | |
| 2015 | 1,631 | 242,132 | 11 | |
| 2014 | 1,050 | 132,507 | 12 | |
| 2013 | 2,614 | 287,912 | 13 | |
| 2012 | 2,281 | 179,190 | 14 | |
| 2011 | 4,561 | 289,967 | 15 | |
| 2010 | 410 | 77,242 | 16 | |
| 2009 | 600 | 159,855 | 17 | |
| 2008 | 544 | 97,995 | 18 | |
| 2007 | 892 | 125,180 | 19 | |
| 2006 | 1,389 | 171,094 | 20 | |
| 2005 | 219 | 79,949 | 21 | |
| 2004 | 285 | 102,007 | 22 | |
| 2003 | 239 | 76,199 | 23 | |
| 2002 | 403 | 78,555 | 24 | |
| 2001 | 289 | 46,277 | 25 | |
| 2000 | 376 | 49,496 | 26 |
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.
| Model Year | Problems Reported |
|---|---|
| 2026 Sonata | |
| 2025 Sonata | |
| 2024 Sonata | |
| 2023 Sonata | |
| 2022 Sonata | |
| 2021 Sonata | |
| 2020 Sonata | |
| 2019 Sonata | |
| 2018 Sonata | |
| 2017 Sonata | |
| 2016 Sonata | |
| 2015 Sonata | |
| 2014 Sonata | |
| 2013 Sonata | |
| 2012 Sonata | |
| 2011 Sonata | |
| 2010 Sonata | |
| 2009 Sonata | |
| 2008 Sonata | |
| 2007 Sonata | |
| 2006 Sonata | |
| 2005 Sonata | |
| 2004 Sonata | |
| 2003 Sonata | |
| 2002 Sonata | |
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| 1999 Sonata | |
| 1998 Sonata | |
| 1997 Sonata | |
| 1996 Sonata |
| ☘ Sonata Service Bulletins |
| ⚑ Sonata Safety Recalls |
| ☤ Sonata Defect Investigations |
| Compare Reliability: |