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Service bulletins for the 2011 Audi A3

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.

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

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Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
011377203335612023-01-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Water and road salt can corrode the exhaust flap shaft causing it to stick in open / closed position.
011377203335612022-10-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Water and road salt can corrode the exhaust flap shaft causing it to stick in open / closed position.
011377203335612022-09-26. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Water and road salt can corrode the exhaust flap shaft causing it to stick in open / closed position.
EmailAUTDI2L-3L2020-10-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Reminders - TDI Approved Emissions Modifications, Emissions Compliant Repairs, corrections and extended warranty / warranty policy and loaner vehicle overview
AWA 19-022019-05-06. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; EQUIPMENT. This bulletin clarifies how to claim AdBlue on warranty claims.
AWC 18-142019-02-25. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This communication notifies dealers that AWC 17-34 was modified to remove 2.0L vehicles and apply to 3.0L vehicles only.
23W1 rev 08282012019-02-19. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE. Inlet Air Box Housing Snow Flap Replacement & Oxygen Sensor Inspection/Replacement - The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet. The oxygen sensor will be checked during this service and, if measured degradation tolerances are met, the sensor will be replaced. Revision Summary Updated work procedure.
23U7 rev 09122012019-02-19. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT. 2.0L TDI Engine (GEN 1) Emissions Modification ? Customer Only (Retail Sold) USA ONLY - The Environmental Protection Agency and California Air Resources Board have determined that Audi A3 vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven. Updated work instructions.
SM 12-2017 VWMEX2018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. This special notice is to inform dealers to return all part numbers listed in the document. Only superseded part numbers to be ordered going forward.
Email-Audi AEM T2018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING. Important Information Regarding Approved Emissions Modification (TDI) Recall Campaigns & the California Air Resources Board / Department of Motor Vehicle (DMV) Vehicle Registration Requirement
Email-2.0L TDI a2018-05-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. 2.0L TDI and 3.0L TDI Extended Emissions Warranty On-Board Diagnostic (OBD) System Coverage Questions
AWC-18-052018-05-21. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This communication asks dealers to contact Audi Warranty if they have any questions about the extended warranty coverage for 2.0L and 3.0L TDI vehicles.
23U7 - Circular2018-02-05. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; EQUIPMENT:OTHER:LABELS. 2.0L TDI Engine (GEN 1) Emissions Modification ? Customer Only (Retail Sold) USA ONLY - The Environmental Protection Agency and California Air Resources Board have determined that Audi A3 vehicles equipped with a 2.0L 4-cylinder TDI engine do not comply with applicable emissions regulations. The emissions control systems on the vehicles will not control emissions under off-cycle conditions as effectively as during the federal test procedure. The extent of the emissions increase under off-cycle conditions depends upon how the vehicles are driven.
23W1 - Dealer Le2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. Inlet Air Box Housing Snow Flap Replacement & Oxygen Sensor Inspection/Replacement - The snow flap in the inlet air box housing may remain partially to fully open. Should this occur, excess warm air could enter the air intake through the snow flap inlet. The oxygen sensor will be checked during this service and, if measured degradation tolerances are met, the sensor will be replaced.
Email - 2.0L and2018-02-05. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 2.0L & 3.0L TDI Settlement Updates
A011377 2033356-2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. MIL on. DTCs are stored in the engine control module (ECM), J623. Water and road salt can corrode the exhaust flap shaft causing it to stick in open / closed position.
AWA-13-032017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This document modifies the Audi Warranty Policies and Procedures Manual for the engine exhaust flap limited warranty extension.
Customer Mailing2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This document contains information on the warranty extension for the engine exhaust flap. Audi has determined that under specific conditions, certain deficiencies affecting the engine exhaust flap on your TDI® Clean Diesel Engine vehicle could make the engine exhaust flap susceptible to degraded performance. If this happens, the Malfunction Indicator Lamp (MIL) on the instrument cluster may illuminate due to the presence of specific fault codes caused by a faulty engine exhaust flap. (The MIL is part of your on-board diagnostic system. Please refer to your owner?s manual for additional information about the MIL.) In some locales, an illuminated Malfunction Indicator Lamp could cause your vehicle to fail a smog check program, and your vehicle registration application could be denied. Audi has not identified any vehicle drivability concerns related to this issue.
A211315 2027585-2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Supersedes Technical Service Bulletin Group 21 number 12-09 dated May 16, 2012. Rattling and/or jarring noises heard from the engine compartment/exhaust system between 1800 and 2900 rpm. Because of exhaust gas pulsations, the wastegate flap and rods vibrate at the start of the boost air control. This vibration causes rattling or jarring noises.
Dealer Letter-Da2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This document contains information about the upcoming emissions service action 23N4.
Campaign Circula2017-10-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM:SOFTWARE. The vehicle's engine management software has been improved to assure the vehicle's tailpipe emissions are optimized and operating efficiently. Under certain operating conditions, the earlier strategy may have increased the chance of the vehicle's MIL light illuminating. If the MIL illuminates for any reason, the vehicle will not pass an IM emissions inspection in some regions. ECM software update needed.
TDI EMISSIONS SE2017-06-27. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS COMMUNICATION INFORMS OF THE TDI EMISSIONS SETTLEMENT AGREEMENT WITH REGARDS TO 2.0L TDI VEHICLES.
EMAIL - TDI UPAT2017-06-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS EMAIL GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L AND 3.0L TDI VEHICLES.
EMAIL TDI UPDATE2017-03-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. THIS EMAIL GIVES AN UPDATE ON THE CURRENT EMISSIONS ISSUES WITH REGARDS TO 2.0L AND 3.0L TDI VEHICLES.
A241654204400322017-03-14. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). THIS TECHNICAL SERVICE BULLETIN EXPLAINS HOW TO DIAGNOSE AND REPAIR ISSUES WITH THE INTAKE MANIFOLD FLAP VALVE N316.

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