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Service bulletins for the 2014 Audi A8

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.

1325 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
AWA-18-01 2018062018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This bulletin explains the extended emissions warranty for TDI vehicles modified under Campaign 23V4. The parts list was updated to include service numbers.
A011875 2035368-2018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains repair instructions for when a MIL is on with DTC P203B00.
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
Circular - Emiss2018-09-17. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. 3.0 TDI vehicles were equipped with undisclosed Auxiliary Emission Control Devices which are not permitted by emissions regulations. Removed California DMV Tie-in Requirements
A211829 2044640-2018-09-17. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE; EQUIPMENT. This bulletin contains repair instructions for when the engine cannot be started or it is difficult, there is unusual noises when accelerating and/or there is reduced engine performance.
A011873 2046724-2018-09-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This bulletin contains a software update to address occasional stalling or running erratically without a DTC. Occasional "System too rich" entries.
A011868 2048391-2018-09-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. This bulletin contains a software update to correct a MIL on with DTC P033300, P132200, P132400, and/or P032800.
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.
ATU_Engine_Janua2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. 4.0T Locating cause for coolant loss, known causes, corrections and TSB review
A171893 2040644_2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV). This bulletin provides repair instructions on diagnosing and replacing a leak in the crankcase breather module.
A011857 2042071_2018-05-21. Service bulletin. EQUIPMENT; ENGINE. This bulletin contains repair instructions for when the MIL is on and one of many DTCs is stored in relation to dylinder on demand function.
A211727 20446402018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER. This bulletin contains detailed instructions and a worksheet for determining the damage on a turbocharger.
A171789 20406442018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. This bulletin provides repair instructions on diagnosing and replacing a leak in the crankcase breather module.
A011747 20484112018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE AND ENGINE COOLING. This bulletin contains repair instructions for when a 4.0 liter engine has a MIL on, the engine may be limited to 4,000rpm, and there are DTCs about the intake manifold flap adjustment.
A011746 20380452018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. This technical service bulletin provides instructions for replacing the coolant thermostat with a new part number to resolve a stored DTC.
Email-TDI Virtua2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. E-mail - TDI Virtual Closing Training Reminder
Email-AdBlue par2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. This email clarifies which part numbers dealers can use for refilling AdBlue.
Circular-Emissio2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. 3.0 TDI vehicles were equipped with undisclosed Auxiliary Emission Control Devices which are not permitted by emissions regulations. Revised legal approved copy.
E-mail 3.0L TDI2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. E-mail - 3.0L TDI Gen 2 Emissions Compliant Repair (ECR) Approval
e-mail 3.0L TDI2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL. e-mail_Audi 3.0L TDI issue Update
A231745 2049856-2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This bulletin contain repair instructions for the TDI emission modification.
A011748 2040403-2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. This technical service bulletin instructs the reader to replace either a combi valve or vacuum solenoid valve depending on the circumstances under which DTC P244000 and/or P244200 were stored.
A171566 2040644-2018-03-13. Service bulletin. ENGINE AND ENGINE COOLING. Supersedes Technical Service Bulletin Group 17 number 15-64 dated June 3, 2015. A metallic whistling or grinding sound is heard from the engine compartment when the vehicle is at idle speed. The sound usually only occurs when the engine is warm. The MIL is sporadically on. DTCs are stored in the ECM. A leak in the crankcase breather module (pressure regulating valve) can cause this condition.
A011685 2041120-2018-03-13. Service bulletin. ENGINE; ELECTRICAL SYSTEM. This bulletin provides information regarding a software update for DTC P042000 and/or P043000.

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