Audi bulletin TSB_2078916_1
What it saysThis TSB provides information when the fuel tank cap seal is leaking, DTC P044200, P045600, and/or P00EF00 stored in ECM. NHTSA’s full summary ↓
Audi filed this with NHTSA as a service bulletin dated Aug 19, 2025, received Sep 4, 2025, about the fuel/propulsion system. It names 66 model years (2023–2025). 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 TSB provides information when the fuel tank cap seal is leaking, DTC P044200, P045600, and/or P00EF00 stored in ECM.
Document filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| TSB_2078916_1 | Service bulletin | Aug 19, 2025 | 11022688 |
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 themand 26 more on this site: 2025 Audi S4, 2024 Audi S4, 2023 Audi S4, 2025 Audi S5, 2024 Audi S5, 2023 Audi S5, 2025 Audi S6, 2024 Audi S6, 2023 Audi S6, 2025 Audi S7, 2024 Audi S7, 2023 Audi S7, 2025 Audi S8, 2024 Audi S8, 2023 Audi S8, 2025 Audi SQ5, 2024 Audi SQ5, 2023 Audi SQ5, 2025 Audi SQ7, 2024 Audi SQ7, 2023 Audi SQ7, 2025 Audi SQ8, 2024 Audi SQ8, 2023 Audi SQ8, 2023 Audi TT, 2023 Audi TTS Coupe.
A 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 66 model years this bulletin names have filed 349 complaints with NHTSA since 2015. 9 of them name Fuel/Propulsion System — 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.
While driving my brand new 4-day old 2025 Audi Q3 at highway speeds, the vehicle suddenly lost engine power and shut off without warning. At the time of the incident the fuel gauge indicated approximately 1/4 tank remaining and there were no prior warnings. I was forced to pull over in traffic, creating a dangerous situation.
2025 Audi Q3 · Fuel/Propulsion System · filed with NHTSA Dec 14, 2025 · ODI 11704946
I was driving out of a parking lot into the feeder road of a highway with the intent of immediately getting on the highway. When I attempted to accelerate the car would not go any faster. I was traveling perhaps 5-10 miles per hour as cars on the feeder road were approaching at 45-50 miles per hour.
2025 Audi SQ5 · Fuel/Propulsion System · filed with NHTSA May 7, 2026 · ODI 11736430
I am the lessee of a 2025 Audi A6 e-tron, VIN , leased new from McGrath Audi in XXX. The vehicle has been defective continuously since delivery and is currently inoperable. Current defect. After Audi applied software update campaign KT2, the vehicle will no longer accept a charge from any source.
2025 Audi A6 · Fuel/Propulsion System · filed with NHTSA Sep 16, 2026 · ODI 11764670
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 fuel/propulsion system
Source: same model, same component group31 other manufacturer communications filed against these Audi models under the same component group (fuel/propulsion system), newest first. The eight newest are listed; the rest are on the Audi list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| TSB_2082702_2 | Service bulletin | Aug 21, 2026 | This bulletin provides informatoinw hen the fuel tank level is implausible; DTC B105A1A B103E29. |
| TSB_2082702_1 | Service bulletin | Jul 13, 2026 | This bulletin provides informatoinw hen the fuel tank level is implausible; DTC B105A1A B103E29. |
| TSB_2081573_4 | Service bulletin | Jul 13, 2026 | This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible. |
| SM 01-2026 | Other | Jul 9, 2026 | This special notice is to inform dealers to return the parts listed if it meets the criteria provided. |
| TSB_2081573_3 | Service bulletin | Jul 2, 2026 | This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible. |
| TSB_2078916_3 | Service bulletin | Jun 4, 2026 | This bulletin provides information when the fuel tank cap seal is leaking; DTC P044200, P045600 and/ or P00EF00 in stored in the ECM. |
| TSB_2079461_3 | Service bulletin | Dec 11, 2025 | This bulletin provides information when the DTC P014800 or P008700 stored in ECM; Fuel System. |
| TSB_2080126_1 | Service bulletin | Dec 1, 2025 | This bulletin provides information when there is a noise from the fuel line. |
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_2078916_1 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_2078916_1 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_2078916_1 cover?
The manufacturer filed it against 66 model years: 2025 Audi A3, 2024 Audi A3, 2023 Audi A3, 2025 Audi A4, 2024 Audi A4, 2023 Audi A4 and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.