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2020 Audi

S8

Auto (S8), 8 cyl, 4.0 L, Turbo

Audi S8: best and worst years
2020 Audi S8

Closest available photo (2024 model year); you're viewing the 2020.

2024 photoCalreyn88CC BY-SA 4.0via Wikimedia Commons

Known issues manufacturer service bulletins, model year

893 service bulletins filed with NHTSA for this model year

  • May 26, 2026UNKNOWN OR OTHERAOS-26-25

    This is a notice for software changes with the ODIS diagnostic program to correct the communication during vehicle programming function: A software fix is needed to correct the issue: The ODIS Audi Brand update 2.41.1 is setting a ODS5003E error code when you perform the 90TV SVM flash.

  • May 22, 2026ELECTRICAL SYSTEMTSB_2080517_4

    This bulletin provides informaiotn when the starter battery is discharged or defective.

  • May 15, 2026VISIBILITY/WIPERTSB_2067557_2

    This bulletin provides informaiton when the windscreen/rear window washer pump is not working (B126101, B126113).

  • May 13, 2026ELECTRICAL SYSTEMTSB_2076264_6

    This bulletin provides repair instructions for the overhead view camera; gen 3.

  • May 6, 2026POWER TRAINTSB_2074808_4

    The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years

  • Apr 30, 2026ELECTRICAL SYSTEMTSB_2080517_3

    This bulletin provides informaiotn when the starter battery is discharged or defective.

  • Apr 30, 2026ENGINETSB_2074303_12

    This bulletin provides informaiton when there is a red coolant temparature/coolant level warning lamp; 4.0 ltr. V8 TFSI.

  • Apr 30, 2026ELECTRICAL SYSTEMTSB_2058831_18

    This bulletin provides information when there is an electrical system warning; DTC U046900 stored in the ECM.

  • and 885 more

Source: NHTSA manufacturer communications (technical service bulletins).

Warranty manufacturer terms, by make

Basic
4 yr / 50k mi
Powertrain
4 yr / 50k mi
Roadside assistance
4 yr
Maintenance
3 yr / 30k mi
EV battery
8 yr / 100k mi

Source: media.audiusa.com as of 2026-06

Information is gathered on a best-effort basis from public sources, may be incomplete or out of date, and is not purchasing or financial advice. Verify with the manufacturer or dealer before buying.