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Service bulletins for the 2021 Audi A4 allroad

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

785 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
TSB_2081573_42026-08-05. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible.
TSB_2081573_32026-08-05. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible.
TSB_2079461_32026-01-07. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when the DTC P014800 or P008700 stored in ECM; Fuel System.
TSB_2079903_12025-12-05. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when there is difficulty fueling, gas pump clicks off before the tank is full.
TSB_2079461_22025-12-05. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when the DTC P014800 or P008700 stored in ECM; Fuel System.
TSB_2079461_12025-11-08. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when the DTC P014800 or P008700 stored in ECM; Fuel System.
TSB_2042920_22025-07-08. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when there is corrosion on the exhaust tail pipes.
A0124342074976_12024-09-06. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
A0024902074853_12024-09-06. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides service information ror when the fuel tank cannot be fully filled.
A0124342074976_12024-09-06. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
A0024902074853_12024-09-06. Service bulletin. FUEL/PROPULSION SYSTEM. This bulletin provides service information ror when the fuel tank cannot be fully filled.
A9724052069123_22024-02-06. Service bulletin. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY. This bulletin provides information for when DTC U064100, or U06400 are stored for fuel tank breather, and the MIL is illuminated.
A1323222072511_12024-01-04. Service bulletin. POWER TRAIN; FUEL SYSTEM, OTHER:KINETIC:FLYWHEEL,BEARINGS. This bulletin provides service information when there are noises from the drivetrain, dual mass flywheel.
A0123662071199_12023-09-01. Service bulletin. FUEL SYSTEM, GASOLINE. This bulletin provides information for when the MIL is on with DTC P045600 Very Small Leak detected NVLD.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.