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Service bulletins for the 2018 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.

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

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Bulletins, newest first
A201807 2052368-2018-11-26. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. This bulletin contains instructions for repairing when the fuel gauge does not show full.
A201806 2052368-2018-11-26. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; FUEL SYSTEM, GASOLINE. This bulletin contains instructions for repairing when the fuel gauge does not show full.
A401883 2048266-2018-10-15. Service bulletin. EQUIPMENT; SUSPENSION:FRONT:CONTROL ARM:LOWER ARM; EQUIPMENT ADAPTIVE/MOBILITY. This bulletin contains repair instructions for a rumbling/creaking noises from the front of the vehicle.
A171894 2048392-2018-10-15. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL. This bulletin contains software update ifnormation for when the instrument cluster display shows ?Please reduce oil level.?
Service Informat2018-09-24. Service bulletin. EQUIPMENT. Page 2 Disclosure information changed
A9118972018-09-24. Service bulletin. EQUIPMENT. This bulletin contains instructions for when the customer loses audio for the radio after ending an incoming phone call.
A2018022018-09-24. Service bulletin. FUEL SYSTEM, GASOLINE. This bulletin contains instructions for submitting a PSS for an incorrect fuel gauge reading.
A0118732018-09-24. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE. This bulletin contains a software update to address occasional stalling or running erratically without a DTC. Occasional "System too rich" entries.
SM 91-20182018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL. The part numbers listed in the document are to be returned if they meet the criteria provided.
A911899 2051527-2018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. This informational bulletin contains instructions for when the Sirius presets are missing with no DTCs.
A911800 2051527-2018-09-17. Service bulletin. EQUIPMENT:ELECTRICAL; EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. This informational bulletin contains instructions for when the Sirius presets are missing with no DTCs.
Service Informat2018-09-17. Service bulletin. TIRES. Page 2 Disclosure information changed
A201802 2051100-2018-09-17. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This bulletin contains instructions for submitting a PSS for an incorrect fuel gauge reading.
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.
ATU_Engine_Janua2018-05-21. Service bulletin. ENGINE AND ENGINE COOLING. 4.0T Locating cause for coolant loss, known causes, corrections and TSB review
A701866 2038029_2018-05-21. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. This bulletin contains repair instructions for various squeaks and/or rattles that are heard from the roof area on vehicles equipped with pananormic sunroof.
2018 Audi Tire C2018-05-21. Service bulletin. TIRES. New Document Added
Scheduled Mainte2018-04-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. Additional Maintenance Section: Added, "(if applicable)" to Battery - Connected gateway - Replace
Scheduled Mainte2018-04-16. Service bulletin. ELECTRICAL SYSTEM. Additional Maintenance Section: CHANGED: "RS 7 Plus" to "RS 7 performance" on Rear Axle every 40,000 miles and Spark plugs - Replace every 30,000 miles or 3 years ADDED: "(except RS 7 performance)" and "(except S8 plus)" to Spark Plugs - Replace every 40,000 miles or 6 years
PDI 2018 Audi Te2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL. Audi A3 e-tron Sportback: Audi connect section: ADDED "Turn on the wireless network (if equipped) Ensure the wireless network is turned on (Telephone > Options > Wi-Fi® options > Wi-Fi® Mode ?Hotspot?) " Audi A3/S3/RS 3: ADDED: Verify system connects to mobile network (if equipped) Review TSB 2042942 for additional information Make sure the system fully connects to the wireless network (LTE symbol with service bars)(only applies if in an AT&T service area)
PDI 2018 Audi Te2018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. All models: Vehicle Preparation section: ADDED "Using Guided Functions" to "Set adaption channel to enable CD Ripping (if equipped)" A8 and Q3: Audi connection: REMOVED: "Turn on the wireless network (if equipped)"
PDI 2018 A8L-S82018-04-16. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. Vehicle Preparation section: ADDED "Using Guided Functions" to "Set adaption channel to enable CD Ripping (if equipped)" Audi connect section: REMOVED: "Check 3G connection is possible" "Verify system connects to mobile network (if equipped). Review TSB 2042942 for additional information" "Turn on the wireless network (if equipped)*"
MY 2018 Audi USA2018-04-16. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY:SUN/MOON ROOF ASSEMBLY; SUSPENSION. Under Additional Maintenance Items Section: Removed e-tron from "Perform every 130,000 miles. Timing belt - Replace. Check condition of timing belt tensioning system, dampening pulleys, and idler pulleys and replace if necessary (2.0L TDI models only)" Under Standard Maintenance Section: Removed A5/S5 Cabriolet from "Rollover protection: Check function with soft top down (A3 Cabriolet and R8 Spyder only)" Under Standard Maintenance Section: Removed Q7 from "Panorama sunroof systems - Check function (if equipped) (all except A8L)" and "Panorama sunroof systems - Clean guide rails and lubricate with grease (if equipped) (A8L only)"
A011854 2046724_2018-04-16. Service bulletin. EQUIPMENT. This bulletin contains a software update to address occasional stalling or running erratically without a DTC. Occasional "System too rich" entries.
Scheduled Mainte2018-04-16. Service bulletin. ENGINE AND ENGINE COOLING. Oil Capacity Table: For A3 B-Cycle 2.0 TFSI engine: Changed oil spec from 508/509** Castrol EDGE® Professional® 5W40 to 508/509** Castrol EDGE® Professional® 0W20 Long Life IV

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