The service and repair manual for the 2021 Audi A8 Quattro — 3.0L V6 and 4.0L V8 engines, 3 trims. 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 | 3.0L V6 — 183 cu in, DOHC, turbocharged 4.0L V8 — 244 cu in, DOHC, turbocharged |
| Trims | L Plug-In Hybrid Sedan 4-Door · Premium Sedan 4-Door · L Sedan 4-Door |
| Federal record | 10 recalls · 5 complaints · 1,186 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2021 A8 Quattro manual
03 / ContentsSections in the manual
- Quick Lookups 277
- General Information 2,349
- Accessories & Equipment 5,675
- Heating, Ventilation & A/C (HVAC) 1,007
- Body & Frame 2,750
- Hybrid/Electric Powertrain 132
- Brakes 269
- Maintenance 229
- Drivelines & Axles 197
- Restraints 427
- Electrical 1,036
- Steering 361
- Engine Mechanical 1,410
- Suspension 608
- Engine Performance 1,064
- Transmission 197
- Front 200
- Rear 200
04 / Known issuesRecalls on federal record for the 2021 A8 Quattro
- Back Over Prevention — sensing system › camera · 21V825000A rear-view camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.
- Seat Belts — rear/other › retractor · 21V606000An unsecured child restraint system can increase the risk of injury during a crash.
- 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.
- 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 crash.
- Back Over Prevention — display function · 22V742000A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.
- Equipment — electrical › infotainment › video (touch)screen/monitor/unit · 22V806000An inoperative rearview camera display reduces the driver's rear visibility, increasing the risk of a crash.
- Electrical System — propulsion system › charging › cable/cord › onboard · 23V842000An overheated outlet or charging cable can increase the risk of a fire.
- Electrical System — instrument cluster/panel · 25V201000An instrument panel display that fails to show critical safety information, such as the speedometer or warning lights, increases the risk of a crash.
- Back Over Prevention — sensing system › camera · 25V900000A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.
Owners have filed 5 complaints and Audi has issued 1,186 technical service bulletins for the 2021 A8 Quattro. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2021 A8 Quattro manual
Is this manual specific to the 2021 A8 Quattro?
Yes. It is the OEM manual matched to the 2021 model year, covering the 3.0L V6 and 4.0L V8 across the L Plug-In Hybrid Sedan 4-Door, Premium Sedan 4-Door, L Sedan 4-Door trims. Specifications and procedure sequences are the ones Audi published for this year.
What 2021 A8 Quattro problems does it help with?
10 recalls are on federal record for the 2021 A8 Quattro, covering back over prevention, seat belts, tires. 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 A8 Quattro 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.
RelatedOther A8 Quattro years and 2021 Audi models
2024 A8 Quattro · 2023 A8 Quattro · 2022 A8 Quattro · 2020 A8 Quattro · 2019 A8 Quattro · 2018 A8 Quattro · 2017 A8 Quattro · 2016 A8 Quattro · 2015 A8 Quattro · all 28 years
2021 Audi A1 · 2021 Audi A3 · 2021 Audi A3 Quattro · 2021 Audi A4 · 2021 Audi A4 Quattro · 2021 Audi A4 allroad · 2021 Audi A5 · 2021 Audi A5 Quattro · 2021 Audi A5 Sportback · 2021 Audi A6 · 2021 Audi A6 Quattro · 2021 Audi A6 allroad · every 2021 model