The service and repair manual for the 2021 Audi S8 — the 4.0L V8 engine, 1 trim. Matched to this exact model year, so the specifications and sequences are the ones Audi published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2021 |
|---|---|
| Engines | 4.0L V8 — 244 cu in, DOHC, turbocharged |
| Trims | Base Sedan 4-Door |
| Federal record | 7 recalls · 3 complaints · 1,083 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2021 S8 manual
03 / ContentsSections in the manual
- Quick Lookups 140
- General Information 2,333
- Accessories & Equipment 5,675
- Heating, Ventilation & A/C (HVAC) 1,007
- Body & Frame 2,750
- Maintenance 229
- Brakes 269
- Restraints 427
- Drivelines & Axles 197
- Steering 361
- Electrical 899
- Suspension 603
- Engine Mechanical 1,108
- Transmission 133
- Engine Performance 785
- Front 200
- Rear 200
04 / Known issuesRecalls on federal record for the 2021 S8
- Suspension — rear › axle › non-powered axle assembly · 21V295000A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a.
- Tires · 22V034000Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
- Engine And Engine Cooling — engine › engine control module (ecu/ecm) · 21V111000An engine control module malfunction may cause the engine to stall, increasing the risk of a crash.
- Back Over Prevention — sensing system › camera · 21V825000A rear-view camera that does not display an image reduces the driver's rear view, increasing the ris.
- Back Over Prevention — sensing system › camera · 25V900000A rearview image that does not display reduces the driver's view behind the vehicle, increasing the.
- Back Over Prevention — display function · 22V742000A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a cr.
- Seat Belts — rear/other › retractor · 21V606000An unsecured child restraint system can increase the risk of injury during a crash.
Owners have filed 3 complaints and Audi has issued 1,083 technical service bulletins for the 2021 S8. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2021 S8 manual
Is this manual specific to the 2021 S8?
Yes. It is the OEM manual matched to the 2021 model year, covering the 4.0L V8 across the Base Sedan 4-Door trims. Specifications and procedure sequences are the ones Audi published for this year.
What 2021 S8 problems does it help with?
7 recalls are on federal record for the 2021 S8, covering suspension, tires, engine and engine cooling. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Audi dealers.
Does it include 2021 S8 wiring diagrams?
Yes — the complete wiring diagrams for the 2021 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $40.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
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