Built from official NHTSA complaint and recall data · data through 07/14/2026
High complaint levelIts most-reported problem — Electrical System — runs 6.6× the fleet median for that category across the 2547 model-years tracked on this site.
124Complaints
3Recalls
1Crashes
0Fires
0Injured
0Deaths
Source: U.S. NHTSA complaint & recall data. Complaints are unverified reports from vehicle owners — a complaint is not a confirmed defect.
Is this problem acknowledged?
The most-reported problem — Electrical System (71.8% of complaints) — has no NHTSA recall or open investigation on file.
Electrical System complaints here are 6.6× the median for that category across the 2547 model-years tracked on this site.
1 of the 6 most-reported categories on this page are backed by a recall or open investigation; the other 5 rest on owner reports alone.
Complaint category
Reports
Official status
Reference
Electrical System
89 · 71.8%
No official action
—
Back Over Prevention: Warnings
36 · 29%
No official action
—
Back Over Prevention: Rearview System Braking
21 · 16.9%
No official action
—
Forward Collision Avoidance: Warnings
6 · 4.8%
No official action
—
Lane Departure: Blind Spot Detection
5 · 4%
No official action
—
Suspension
2 · 1.6%
Recalled
Recall 21V295000
Recalled = an NHTSA safety recall covers this category, so a free repair exists. Under investigation = NHTSA has an open probe but no recall yet. Investigation closed = NHTSA examined it and closed the probe — this is not a defect finding; where a closed probe led to a recall we name the campaign. Not available = recall or investigation data could not be confirmed for this vehicle — it is not a “no”. Categories are matched by NHTSA's top-level component. Check your VIN at nhtsa.gov/recalls.
Percentages are the share of the 124 complaints citing each component; one complaint can cite several components. “Unspecified / other” is NHTSA’s own catch-all category — we show it rather than hide it.
A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
A disabled passenger air bag increases the risk of injury in the event of a crash. Recall repairs are free at authorized dealers.
PARK-IT: NO · PARK-OUTSIDE: NO · OVER-THE-AIR FIX: NO
Park itPark outside Specimen badges — shown on a recall card only when NHTSA sets the flag. None of the campaigns above carries either flag. Always check your own vehicle by VIN at nhtsa.gov/recalls.
What owners report
“MMI system is restarting on a near constant basis, both while parked and driving. Aside from being inconvenient, as you can not use media/navigation/etc while…”NHTSA complaint 11673851 — filed 07/16/2025 · ELECTRICAL SYSTEM
“Audi A4 2020 B9 model MMI "info-system" constantly restarts itself during the drive, regardless of it being connected via Apple CarPlay, Bluetooth, or radio. MMI…”NHTSA complaint 11673806 — filed 07/15/2025 · ELECTRICAL SYSTEM
“Audi MMI (screen) keep rebooting. I can't use my backup camera. This issue also block the back collision sensor”NHTSA complaint 11673795 — filed 07/15/2025 · ELECTRICAL SYSTEM
Excerpts are shortened and scrubbed of personal details; they are individual, unverified reports.
Complaint trend by year filed
Frequently asked questions
What are the most common problems with the 2020 Audi A4?
Electrical system issues are the most-reported category, cited in 89 of 124 NHTSA complaints (71.8%), followed by unspecified/other issues (58), back over prevention: warnings (36), back over prevention: rearview system braking (21). Complaints are unverified owner reports.
How many complaints does the 2020 Audi A4 have?
124 complaints were on file with NHTSA as of 07/14/2026. Of those, 1 involved a crash, 0 involved a fire, and 0 reported injuries. No deaths were reported.
Does the 2020 Audi A4 have any recalls?
Yes — 3 NHTSA safety recall campaigns, including campaign 22V034000. Recall repairs are free at authorized dealers. Check your specific vehicle by VIN at nhtsa.gov/recalls.
Has NHTSA acted on the 2020 Audi A4's reported problems?
1 of the 6 most-reported complaint categories on this page is backed by an NHTSA safety recall or open investigation; the rest are unverified owner reports. A recall means a free repair is available at authorized dealers.
Is a complaint proof of a defect?
No. Complaints are reports submitted by consumers to NHTSA. NHTSA does not verify individual complaints, and a complaint is not proof that a defect exists.
About this data — Complaint figures on this page are consumer reports submitted to the National Highway Traffic Safety Administration (NHTSA), a U.S. government agency. NHTSA does not verify individual complaints; a complaint is not proof that a defect exists, and counts reflect what owners chose to report, not confirmed failure rates. Recall information comes from official NHTSA safety recall campaigns; recall repairs are free at authorized dealers. Always check your specific vehicle by VIN at nhtsa.gov/recalls. CarModelProblems.com is an independent site and is not affiliated with NHTSA or any vehicle manufacturer. Data through 07/14/2026.
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