Audi A4 problems, by model year and system
346 complaints owners filed with NHTSA about the Audi A4 2016–2025, and the 1 system the record is deep on — electrical (152). Each system has a page across the years; 1 model-year page goes deeper still. Every figure is a linked federal record; none is a failure rate or a verdict on one car.
The systems the record is deep on
Source: NHTSA complaints, recalls, investigations and manufacturer communicationsAudi A4 complaints, year by system
Source: NHTSA complaint database| Model year | electrical |
|---|---|
| 2025 0 in all | — |
| 2024 6 in all | 1 |
| 2023 11 in all | 3 |
| 2022 6 in all | — |
| 2021 12 in all | 3 |
| 2020 157 in all | 111 |
| 2019 13 in all | 4 |
| 2018 44 in all | 17 |
| 2017 86 in all | 10 |
| 2016 11 in all | 3 |
Complaints owners filed with NHTSA naming each system, per model year; a bold count links the year’s own page on that system. Counts scale with sales and with time on the road; nothing here is a rate, and NHTSA’s headings are coarse (“Power Train” is the transmission and the driveline).
Common questions
Source: NHTSA complaint databaseWhich Audi A4 system draws the most complaints?
Electrical: 152 complaints across 10 model years, 44% of everything owners filed about the Audi A4. A count, not a rate — it says nothing about how many were sold.
Which Audi A4 year has the most complaints?
2020 (157), 2017 (86), 2018 (44). Older years have had longer to collect them; the year pages show each year's share by system.