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ProblemsByVinFile / 2020-AUDI-A4NHTSA data synced 4 days ago
Audi
2020 Audi A4 problems
The 2020 Audi A4 has 124 NHTSA owner complaints and 1 active recall campaign on file. Here's the breakdown — what's serious, what's noise, and what a working mechanic would actually do about it.
The 2020 Audi A4 has 124 NHTSA owner complaints and 1 recall on file (U.S. federal records, as of July 2026). The most-reported system is electrical at 89 complaints (~$850 to repair). Source: NHTSA Office of Defects Investigation.
Solid reliability overall. Common issues are concentrated in a few systems.
0
Critical
1
Severe
0
Moderate
Should you avoid this 2020 A4?
Acceptable — with caveats
Worth owning if you verify the specific issues below before you buy.
Reliability score 7.4/10 — around the segment average
1 recall campaign on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings
5 / 5 overall
Overall★★★★★5/5
Frontal crash★★★★★4/5
Side crash★★★★★5/5
Rollover★★★★★5/5
Driver-assist features on the tested model:
Electronic stability control: Standard · Forward collision warning: Standard · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2020 Audi A4 4 DR AWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2020 Audi A4? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
electrical — 89 owner reports
· ~$850 to fix
Recalls to confirm are done
Run the VIN from the listing — 1 active recall on this model. Recall repairs are always free.
Verdict for buyers: 7.4/10 model. The priciest documented failure is
electrical (~$850) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2020 A4· electrical
Emergency Call SOS module function is inoperative. Cannot use the SOS function and hands-free cell phone use through Bluetooth is also inoperative. Went to dealer on 8/31/22 for repair/replacement of module as instructed in Audi Service Action 90T2. I was told the repair is…
MMI module keeps resetting. This causes sudden lost of navigation display and sudden lost of backup camera when reset happens while backing up. Release version: MHI3_US_AUG45S_P3243 Software version: 3243
Many times while driving the Audi MMI system which controls all radio/navigation/controls screen will completely shut off and reboot, leaving the screen blank and functionality gone. When researching online many others have reported the same issue, with Audi unable to provide a…
My 2020 Audi A4 infotainment MMI keeps rebooting and takes over a minute or so to load back. This has been happening recently and i have rebooted the system and followed the Audi/reddit forums to seek any help but no resolution. It seems most of the 2020 Audis are facing similar…
Had a problem with your 2020 Audi A4?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
A disabled passenger air bag increases the risk of injury in the event of a crash.
Fix: Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.
Common questions
Is the 2020 Audi A4 reliable?
Mostly yes. With a reliability score of 7.4 out of 10 based on 124 owner complaints filed with NHTSA, the 2020 Audi A4 is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2020 Audi A4?
The 2020 Audi A4 is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 7.4/10 — around the segment average; 1 recall campaign on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2020 Audi A4?
Inspect the electrical first — it's the most-reported issue on this model, with 89 owner complaints filed. Average repair cost runs about $850 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2020 Audi A4 a good used car to buy?
It scores 7.4 out of 10 on our NHTSA-based read of 124 owner complaints. The main thing to watch is electrical. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2020 Audi A4?
Based on NHTSA records, the most-reported issue is electrical, with 89 complaints filed. Average repair cost runs about $850 at an independent shop.
What's the most expensive thing that goes wrong?
The electrical is one of the costlier repair items. Average repair cost runs about $850 at an independent shop. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Audi A4 has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2020 Audi A4?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 124 complaints on file and the costliest repair averaging $850, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 4 days ago. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Audi/A4.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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