Audi A5 owners have reported a total of 435 problems for their cars built in the 18 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 A5. The 2020 Audi A5 cars have the most problems reported (93 problems).
The following chart shows the 21 most common problems for Audi A5 cars. The number one most common problem is related to the vehicle's electrical system (76 problems). The second most common problem is related to the vehicle's engine and engine cooling (73 problems).
It would not be fair to compare the Audi A5 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 A5 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 A5 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.
Another way to measure the reliability across the model years of the Audi A5 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 |
|---|---|
| 2025 A5 | |
| 2024 A5 | |
| 2023 A5 | |
| 2021 A5 | |
| 2020 A5 | |
| 2019 A5 | |
| 2018 A5 | |
| 2015 A5 | |
| 2013 A5 | |
| 2010 A5 | |
| 2009 A5 |