22 problems have been reported for the 2009 Audi A6. The following chart shows the 6 most common problems for 2009 Audi A6. The number one most common problem is related to the vehicle's air bags with 17 problems. The second most common problem is related to the vehicle's electrical system (1 problem).
| Problem Category | Number of Problems |
|---|---|
| Air Bag | |
| Electrical System | |
| Electronic Stability Control | |
| Unknown Or Other | |
| Power Train | |
| Structure |
In our research we use the PPMY index to compare the reliability of vehicles. The PPMY index of a certain model is defined as the problems reported per thousand vehicles per Year. The total sales of the 2009 Audi A6 in the United States are 4,283 units [1]. If the total number of problems reported by Audi A6 owners in the last 13 years is 22, and the age of the vehicle is 13, the PPMY index can then be calculated as
PPMY Index = 22 / 4,283 / 13 * 1000 = 0.40.
For more information, refer to this page: A study of reliability comparison across Audi A6 model year vehicles.
The following chart shows the number of problems reported during each of the service years since the debut of the 2009 Audi A6 in 2009.
| Service Year | Number of Problems |
|---|---|
| 2022 | |
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 | |
| 2014 | |
| 2013 | |
| 2012 | |
| 2011 | |
| 2010 | |
| 2009 |
When making the decision between buying a new or used Audi A6, the following table can be used to compare the 2009 Audi A6 with the Audi A6 from other model years. Note that the number of problems reported for the 2009 A6 is 22 while the average number of problems reported for the 25 model years of the Audi A6 is 62.