Audi A6 owners have reported a total of 1,902 problems for their cars built in the 30 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 Audi A6. The 1999 Audi A6 cars have the most problems reported (224 problems).
The following chart shows the 30 most common problems for Audi A6 cars. The number one most common problem is related to the vehicle's electrical system (370 problems). The second most common problem is related to the vehicle's air bags (310 problems).
It would not be fair to compare the Audi A6 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 A6 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 Audi A6 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.
| A6 Model Year | Problems | Sales [1] | Vehicle Age |
PPMY Index |
|---|---|---|---|---|
| 2022 | 3 | 4,167 | 4 | |
| 2021 | 19 | 9,276 | 5 | |
| 2020 | 37 | 5,948 | 6 | |
| 2019 | 189 | 18,509 | 7 | |
| 2018 | 16 | 16,259 | 8 | |
| 2017 | 22 | 16,973 | 9 | |
| 2016 | 73 | 29,490 | 10 | |
| 2015 | 27 | 14,787 | 11 | |
| 2014 | 46 | 20,254 | 12 | |
| 2013 | 78 | 21,059 | 13 | |
| 2012 | 83 | 18,334 | 14 | |
| 2011 | 22 | 7,250 | 15 | |
| 2010 | 22 | 6,908 | 16 | |
| 2009 | 22 | 4,283 | 17 | |
| 2008 | 73 | 16,641 | 18 | |
| 2007 | 61 | 11,640 | 19 | |
| 2006 | 80 | 18,115 | 20 | |
| 2005 | 113 | 15,456 | 21 | |
| 2004 | 37 | 15,884 | 22 | |
| 2003 | 72 | 18,548 | 23 | |
| 2002 | 97 | 22,206 | 24 | |
| 2001 | 116 | 33,896 | 25 | |
| 2000 | 151 | 26,292 | 26 |
Another way to measure the reliability across the model years of the Audi A6 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 A6 | |
| 2025 A6 | |
| 2021 A6 | |
| 2019 A6 | |
| 2017 A6 | |
| 2016 A6 | |
| 2015 A6 | |
| 2014 A6 | |
| 2013 A6 | |
| 2012 A6 | |
| 2011 A6 | |
| 2010 A6 | |
| 2009 A6 | |
| 2008 A6 | |
| 2007 A6 | |
| 2006 A6 | |
| 2005 A6 | |
| 2004 A6 | |
| 2003 A6 | |
| 2002 A6 | |
| 2001 A6 | |
| 2000 A6 | |
| 1999 A6 | |
| 1998 A6 |