Audi bulletin TSB_2079830_4
What it saysThis Pending Service Solution (PSS) requests that technicians create a record in the PSS database in instances when noises can be detected between 4000 and 4200 RPM. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Jul 7, 2026, received Aug 5, 2026, about the engine. It names 4 model years (2020–2022). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis Pending Service Solution (PSS) requests that technicians create a record in the PSS database in instances when noises can be detected between 4000 and 4200 RPM.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB_2079830_4 | Service bulletin | Jul 7, 2026 | 11035820 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 4 model years this bulletin names have filed 17 complaints with NHTSA since 2015. 7 of them name Engine — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
The first time, while driving at 50-55mph, the engine decelerated suddenly. After about 10-15 seconds struggles with the gas pedal and brake pedal, the car accelerated normally. I pulled safely to side of the road to shut off the engine and start again. Things seemed to work like normal. The control panels did not show any warning signs.
2021 Audi A7 · Engine · filed with NHTSA Apr 5, 2026
Audi 2020 A8L Engine Fire 3/6/2024 Confirmed by Fire Department, American Family Insurance Unclear if it has been inspected by the Audi U.S. No indication has been received. Incident occurred March 6th, 2024 at approximately 3pm. Operated vehicle in early morning to meet friends for coffee at a nearby coffee shop.
2020 Audi A8 · Engine · filed with NHTSA Apr 8, 2024
At approximately 43,044 miles, my 2021 Audi A7 55 TFSI e quattro (PHEV) was diagnosed with a failed N632 coolant changeover valve — a component of the PHEV thermal management heating circuit. The vehicle has a complete, documented service history with no maintenance gaps.
2021 Audi A7 · Engine · filed with NHTSA Apr 30, 2026
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the engine
Source: same model, same component group120 other manufacturer communications filed against these Audi models under the same component group (engine), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| SM 34-2026 | Other | Aug 21, 2026 | This special notice is to inform dealers to return the parts listed and only order the successor parts going forward. |
| TSB_2081030_3 | Service bulletin | Aug 13, 2026 | This bulletin provides information when there is an abnormal engine knocking noise from the engine compartment; V6 3.0L TFSI. |
| TSB_2079209_3 | Service bulletin | Aug 7, 2026 | This bulletin provides information when the exhuast emissions warning lamp is on P0299. |
| TSB_2074640_3 | Service bulletin | Jun 26, 2026 | This bulletin provides information when there is increased oil consumption; >0.5ltr/1000 km. |
| TSB_2072473_3 | Service bulletin | Jun 11, 2026 | This bulletin provides informaiotn when the red coolant warning lamp comes on or coolang leak at turbocharger. |
| TSB_2082323_1 | Service bulletin | Jun 10, 2026 | This bulletin provides informaiton when the engine is not running smoothly, misfiring. |
| TSB_2079830_3 | Service bulletin | Jun 4, 2026 | This Pending Service Solution (PSS) requests that technicians create a record in the PSS database in instances when noises can be detected b… |
| TSB_2073867_3 | Service bulletin | Jun 4, 2026 | This bulletin provides information when DTC U140A00 Terminal 30 is stored in the ECM. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Audi, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is Audi TSB_2079830_4 a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the TSB_2079830_4 repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does TSB_2079830_4 cover?
The manufacturer filed it against 4 model years: 2022 Audi A7, 2021 Audi A7, 2021 Audi A8, 2020 Audi A8. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.