What are the common problems with the 2020 Audi S4?
Owners of the 2020 Audi S4 have filed 17 complaints with NHTSA, most often about the electrical system (15) and the rear-view camera (9). In NHTSA's complaints file of November 11, 2026, none of its 17 complaints lists a mileage, too few to say when problems were reported; a complaint is an owner's report, not a proven defect.
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See what the paid report includes →NHTSA's file holds 17 owner complaints on the 2020 Audi S4. Owners named the electrical system most often: 15 complaints. A complaint can name more than one component. None of the 17 complaints reports a crash, a fire or an injury.
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Common problems with the 2020 S4
NHTSA's file holds 17 owner complaints on the 2020 Audi S4. Owners named the electrical system most often: 15 complaints. A complaint can name more than one component.
| Component (NHTSA category) | Complaints | Listing mileage | Median mileage |
|---|---|---|---|
| Electrical System | 15 | 0 | Under 5 mileages |
| Back Over Prevention | 9 | 0 | Under 5 mileages |
| Forward Collision Avoidance | 1 | 0 | Under 5 mileages |
| Lane Departure | 1 | 0 | Under 5 mileages |
| Visibility/wiper | 1 | 0 | Under 5 mileages |
None of the 17 complaints reports a crash, a fire or an injury.
Mileage when owners reported a problem with the 2020 S4
Too few complaints on the 2020 S4 list a mileage to say when owners reported problems: none of its 17 complaints lists a mileage, and a median is given here only with 10 or more.
These mileages say when owners reported a problem, not when a 2020 S4 wears out. NHTSA's file holds only vehicles whose owners complained; one that ran without a problem never appears in it, so it gives no lifespan and no cutoff, and how a vehicle was maintained matters more than any one odometer reading.
Every model year together: Half of the 372 NHTSA owner complaints on the 2000–2022 Audi S4 that list mileage came after 54,000 miles (NHTSA complaints file of November 11, 2026). How many miles will an Audi S4 last? →
Is the 2020 S4 a good year?
Complaint counts cannot say whether the 2020 is a good or a bad S4: they rise with how many were sold and how long they have been on the road. They show how the 2020 compares with the other model years in NHTSA's file.
With 17 complaints, the 2020 ranks 11th of the 13 Audi S4 model years from 2000 to 2020 with 10 or more complaints, counting from the most, tied with 2014. The most: the 2000 (143). The fewest: the 2007 (13).
NHTSA files the Audi S4 name for 1992–1995 and 2000–2022. A gap of three or more model years means the name covers different vehicles, so the 2020 is compared only with the 2000–2022 model years.
Recent model years have had less time to collect complaints, so their counts are still growing. No year is ranked by mileage here, because a year's median mileage mostly follows its age.
| Model year | Owner complaints | Listing mileage | Median mileage |
|---|---|---|---|
| 2000 S4 | 143 | 63 | 65,000 |
| 2001 S4 | 87 | 54 | 60,000 |
| 2002 S4 | 22 | 18 | 35,000 |
| 2004 S4 | 29 | 26 | 55,000 |
| 2005 S4 | 43 | 34 | 55,000 |
| 2006 S4 | 30 | 20 | 49,000 |
| 2007 S4 | 13 | 7 | Under 10 mileages |
| 2010 S4 | 60 | 54 | 58,000 |
| 2011 S4 | 26 | 26 | 61,794 |
| 2012 S4 | 22 | 19 | 70,000 |
| 2013 S4 | 33 | 29 | 5,100 |
| 2014 S4 | 17 | 15 | 42,430 |
| 2020 (this page) | 17 | 0 | Under 10 mileages |
2020 Audi S4 recalls
NHTSA's recall files of November 11, 2026 list 3 recall campaigns that name the 2020 Audi S4. A campaign covers a production range, not every vehicle of the model year: check the VIN with NHTSA's free recall lookup.
What these figures can and cannot tell you
- Complaints are owners’ reports to NHTSA. NHTSA publishes them without verifying them: a complaint is an allegation, not a defect finding.
- The mileage is what the owner wrote on the complaint; NHTSA does not check it against the odometer.
- The make, model and model year are the ones on the complaint. NHTSA records them as filed, so a few complaints sit under a model year the name was not sold in.
- They are not a lifespan study. The file holds only vehicles whose owners reported a problem, so these figures do not say how long a typical 2020 S4 lasts.
- A complaint count rises with how many vehicles were sold and how long they have been on the road, so it is not a rating of the 2020 S4.
- Nothing here describes one vehicle: its title brands, odometer readings, accidents and open recalls are in the records for its own VIN.
- None of the 17 complaints on the 2020 Audi S4 gives a usable mileage (blank, zero, a filler such as 999999, or over 500,000).
- NHTSA name counted: S4. NHTSA files some vehicles under several names (a series name and a trim name, for example); this page counts only this one.
- Recall-file name matched: S4.
Primary sources behind this page
Open the underlying public source and verify that its scope matches the question you are asking.
- NHTSA complaints flat file (FLAT_CMPL.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Complaints file field layout (CMPL.txt)National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_PRE_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- NHTSA recalls flat file (FLAT_RCL_POST_2010.zip), downloaded November 11, 2026National Highway Traffic Safety Administration
- Recalls file field layout (RCL.txt)National Highway Traffic Safety Administration
- NHTSA recall and complaint datasets: scope and documentationNational Highway Traffic Safety Administration
- Recalls Lookup by VINNational Highway Traffic Safety Administration
NHTSA’s complaints file was downloaded on November 11, 2026 (FLAT_CMPL.txt, dated 2026-11-11 10:15, 2,265,416 rows), with its recall files (FLAT_RCL_PRE_2010.txt and FLAT_RCL_POST_2010.txt, dated 2026-11-11 08:02). Each complaint is counted once, by its NHTSA number, with the model year and mileage of its first row; a model year has a page only with 10 or more complaints. The collection script and its rules are in scripts/collect-nhtsa-model-year-longtail.mjs.
2020 Audi S4 questions
What are the most common 2020 Audi S4 problems?
NHTSA's file holds 17 owner complaints on the 2020 Audi S4. Owners named the electrical system most often: 15 complaints. A complaint can name more than one component. None of the 17 complaints reports a crash, a fire or an injury.
At what mileage do owners report problems with the 2020 Audi S4?
NHTSA's file gives no mileage figure for the 2020 Audi S4: none of its 17 complaints lists a mileage, and this page gives a median only with 10 or more. These are mileages at a reported problem; they do not say how many miles a 2020 S4 can cover.
Is the 2020 Audi S4 a good year?
Complaint counts cannot say whether the 2020 is a good or a bad S4: they rise with how many were sold and how long they have been on the road. They show how the 2020 compares with the other model years in NHTSA's file. With 17 complaints, the 2020 ranks 11th of the 13 Audi S4 model years from 2000 to 2020 with 10 or more complaints, counting from the most, tied with 2014. The most: the 2000 (143). The fewest: the 2007 (13).
How many recalls does the 2020 Audi S4 have?
NHTSA's recall files of November 11, 2026 list 3 recall campaigns that name the 2020 Audi S4. A campaign covers a production range, not every vehicle of the model year: check the VIN with NHTSA's free recall lookup.
How do I check a used 2020 Audi S4 before buying?
Take the 17-character VIN from the vehicle and compare the odometer with the readings on file for it: title transfers, inspections and auction sales record the mileage on the day. VIN Lookup (free-vin-lookup.com) sells the original ClearVIN PDF for $14.99 (3 reports for $29.99, 5 for $44.99): odometer readings, title brands and auction records on file for the VIN. Check the VIN before buying a used 2020 Audi S4.