31 problems have been reported for the 2009 Audi Q7. The following chart shows the 13 most common problems for 2009 Audi Q7. The number one most common problem is related to the vehicle's fuel system, other with 7 problems. The second most common problem is related to the vehicle's engine and engine cooling (4 problems).
| Problem Category | Number of Problems |
|---|---|
| Other Fuel System | |
| Engine And Engine Cooling | |
| Equipment | |
| Electrical System | |
| Diesel Fuel System | |
| Visibility | |
| Power Train | |
| Air Bag | |
| Air Brake | |
| Seats | |
| Service Brakes | |
| Vehicle Speed Control | |
| 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 Q7 in the United States are 7,178 units [1]. If the total number of problems reported by Audi Q7 owners in the last 13 years is 31, and the age of the vehicle is 13, the PPMY index can then be calculated as
PPMY Index = 31 / 7,178 / 13 * 1000 = 0.33.
For more information, refer to this page: A study of reliability comparison across Audi Q7 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 Q7 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 Q7, the following table can be used to compare the 2009 Audi Q7 with the Audi Q7 from other model years. Note that the number of problems reported for the 2009 Q7 is 31 while the average number of problems reported for the 15 model years of the Audi Q7 is 38.