2021 AUDI A4 Problems
Real NHTSA owner complaints for the 2021 Audi A4. This model year has 11 NHTSA complaints — top issue: Electrical Faults.
Model-Year Complaints
11 owner reports
Recall Campaigns
4 NHTSA campaigns
Top Failure Area
Electrical Faults
Worst 2021 Audi A4 Problems
Top 3 most-reported issues with average mileage at failure.
Electrical Faults
Uncategorized Issues
Transmission / Drivetrain
AI Interpretation — 2021 Audi A4
Low ConfidenceBased on 11 NHTSA complaints for the 2021 Audi A4, issues appear concentrated in electrical faults and uncategorized problems, with some reports of transmission, lane departure, and forward collision avoidance concerns. The low complaint volume and limited model year data make it difficult to identify strong patterns.
- Electrical faults account for 3 of the 11 complaints.
- Uncategorized issues also total 3 complaints.
- Transmission/drivetrain, lane departure, forward collision avoidance, suspension, and unintended acceleration each have 2 complaints.
- Electrical faults
- Uncategorized issues
- Transmission/drivetrain problems
- Inspect electrical systems, including infotainment and sensors.
- Verify all open recalls at nhtsa.gov/recalls.
- Request service records for transmission and drivetrain repairs.
- Have a mechanic inspect suspension and brake components before purchase.
Considering a 2021 Audi A4?
This page shows the model year's reputation. The VIN tells you about this specific car — accidents, title issues, odometer fraud. Full report just $12.95 (vs. Carfax $39.99).
All Problems by Category
Every NHTSA complaint category for the 2021 Audi A4. A single complaint may appear in multiple categories.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Electrical Faults | 3 | — | — | — | |
| Uncategorized Issues | 3 | 1 | — | — | |
| Transmission / Drivetrain | 2 | — | — | — | |
| Lane Departure | 2 | — | — | — | |
| Forward Collision Avoidance: AEB | 2 | — | — | — | |
| Suspension Failures | 2 | 1 | — | — | |
| Unintended Acceleration | 2 | 2 | — | — | |
| Tire Issues | 1 | — | — | — | |
| Engine Problems | 1 | — | — | — | |
| Airbag Malfunctions | 1 | 1 | — | — |
Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2021 Audi A4. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
The instrument cluster has stop working. Have to monitore vehicle information, Mileage, service, Safty notifications and general vehicle information from the Audi app.
Tires are original equipment. Only 19,000 miles on them. Was told all 4 tires have belt shifts and hop some. Suggested they should be replaced. These tires were great when new but you could tell from driving they were degrading. I'm [XXX] and never had an issue with tires this…
I am writing to report a persistent issue with my 2021 Audi A4, VIN [XXX] . I have been experiencing a noticeable vibration, humming, and shuddering sensation that occurs specifically when turning at slow speeds (e.g., in a parking lot or when making a tight turn at an intersect…
The instrument cluster has failed per the recall 90VC. Audi issued the recall for every model made in 2021 with the exception of the A3 and A4 and I believe this was a mistake as my instrument cluster has the same failure.
I have a 2021 audi a4 that is also being affected by the instrument cluster failure/recall. My model , a4 was not included but I am experiencing the same failure and this was reported to the dealership. An online search will show just how many people have issues with the instrume…
The main instrument cluster is not stable- it tries to start up then crashes. As a result, speedometer, rpm’s, gas tank gauge, etc are not available while driving. The screen displays blank with a red triangle, tries to start up then crashes again. This seems similar to Audi reca…
The vehicle at 13,xxx miles on the high ways, and during stop & go traffic; vehicle begins to tremble, transmission and floor shakes, rpms are higher than normal, abnormal noises coming from engine (screeching), jerking on acceleration on the first gears, rough idle, happens only…
The reversing image occasionally appears white screen phenomenon During the process of reversing, the reversing screen suddenly turns white and cannot see anything behind, which brings danger to the driver and others, causing danger to life and property. Apparently the dealer di…
The contact leased a 2021 Audi A4. The contact stated that the dealer had provided her with the vehicle rental while her vehicle was being repaired. The contact stated that while driving at 4 MPH and turning into a parking pace on the 4th floor of a parking garage, the vehicle in…
The contact owns a 2021 Audi A4. The contact received notification of NHTSA campaign number: 21V295000 (Suspension) however, the part to do the recall repair was unavailable. The vehicle was taken to the local dealer who stated that the parts were not yet available. The contact s…
The contact owned a 2021 Audi A4. The contact stated that while driving at a low rate of speed through a parking lot, the vehicle independently accelerated and the brake pedal locked. The vehicle accelerated up a hill as the contact was unable to depress the brake pedal; he colli…
Source: NHTSA Complaints Database. Real owner reports for the 2021 Audi A4.
Recalls for 2021 Audi A4
4 campaignsNHTSA recall campaigns for the 2021 Audi A4. Recalls are free to fix at any authorized dealer. Run a VIN check below to see if your specific vehicle has open recalls.
2021 Audi A4 — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2021 Audi A4 reliable?▾
Severe Issues. The 2021 Audi A4 has 11 NHTSA owner complaints, 3 crash-related, and 4 recall campaigns. The most reported issue is Electrical Faults (3 complaints). Source: NHTSA via VinSpector AI.
What are the most common problems with the 2021 Audi A4?▾
#1: Electrical Faults (3 complaints). #2: Uncategorized Issues (3 complaints). #3: Transmission / Drivetrain (2 complaints)
At what mileage do problems start on the 2021 Audi A4?▾
Mileage data is not available or insufficient for this model year.
How safe is the 2021 Audi A4?▾
The 2021 Audi A4 has 3 crash-related complaints and 0 fire reports out of 11 total NHTSA complaints. 1 injuries were reported. For NCAP lab crash test star ratings, visit nhtsa.gov/ratings.
Does the 2021 Audi A4 have any recalls?▾
Yes — 4 NHTSA recall campaigns affect the 2021 Audi A4. The largest issue: SEAT BELTS:REAR/OTHER:RETRACTOR. Check nhtsa.gov/recalls or run a VIN check to see if your specific vehicle has open recalls.
Should I buy a 2021 Audi A4?▾
The 2021 Audi A4 has severe issues — review the top problems before buying. Pay particular attention to Electrical Faults issues. Always run a VIN check on the specific car you're considering to check for accident history, open recalls, and title brands.
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpector AI.
Wider context: See the full Audi A4 reliability report with year-by-year comparison.
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Check Your Specific 2021 Audi A4
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud. Full report just $12.95 (vs. Carfax $39.99).