Problems · NHTSA complaints

2021 Audi A8L problems

Owners filed 5 complaints about the 2021 Audi A8L with NHTSA between Dec 2021 and Apr 2026. The most-cited component is electrical system (2).

Complaints
5
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Electrical system2
  2. Power train2
  3. Engine1
  4. Fuel/propulsion system1
  5. Structure1

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 30, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20211
20222
20230
20241
20250
20261

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Electrical system

2 reports
“See attached document for complaint. I took my 2021 AUDI A8 to Audi Rockville located at 1125 Rockville Pike; Rockville, MD 20852 on July 18 to fix the recall. After waiting for 2 hours at the dealership, they told me they must go to BestBuy to buy a USB stick and asked if we could re-schedule which we did. I then came back on September 30, and again after 2 hours of waiting, they told me the USB port in the car is not working and that I must pay over $1000 to replace the USB Port so that they can perform the recall. As such we could not get the update done. I followed up with Audi North America Headquarters in Michigan, and they basically told me the same thing that the dealer told me. This issue is very disappointing for two reasons: 1) How can a $100,000+ car be updated using a USB. I have never used the USB port until this Recall. 2) If Audi has no other way to take care of the recall, then Audi should take responsibility for replacing the USB port. The dealership said the USB Port is not part of the recall and it is not under warranty. I am driving a car that is under NHTSA recall violation and Audi should take responsibility for updating the software…”
Owner complaint to NHTSAFiled Apr 2, 2026Electrical systemODI 11728863

Power train

2 reports
“Total electrical shutdown over about 2 minutes. Stranded on road. All electrical systems failed rapidly. Strongly suspect this is part of known BSG/alternator issues with this model.”
Owner complaint to NHTSAFiled Apr 4, 2024Power train, Electrical system, EngineODI 11581253

Engine

1 report

Fuel/propulsion system

1 report
“fuel pump leak, dealer claimed the seal is broken from the manufacture, gave out strong gasoline smell”
Owner complaint to NHTSAFiled Jul 10, 2022Fuel/propulsion systemODI 11473198

Structure

1 report
“I was driving in the morning on a November day on a rural road. The rear moon roof exploded outward. The sound was deafening and scared my passenger and I. The center glass exploded outward, scattering glass outside and inside of the car. I believe that if this happened that passengers in the car could be hurt. Other drivers on the highway could be startled on their car damaged by the flying glass. An accident could be induced by the incident either by the drive of my car or by nearby drivers.”
Owner complaint to NHTSAFiled Dec 31, 2021StructureODI 11445709
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 30, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.