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2021 Audi A8

Plug-in hybrid Hybrid
Large Cars
3 EPA-rated configurations
Data refreshed 2026-10-26
F
Safety Signal
57 / 100 from the NHTSA recall record
Recalls1 critical 10
Complaintsnone reporting a crash, fire or injury 6
Crash ratingnot rated by NHTSA —
Fuel economybest combined, EPA 23 mpg
202720262025202420232022202120202019201820172016

The 2021 Audi A8 is sold in the U.S. as a plug-in hybrid and hybrid large sedan with 3 EPA-rated configurations. The most efficient version, the A8 L, is EPA-rated at 23 mpg combined. NHTSA lists 10 recall campaigns for this model year, 1 rated critical, which gives it a Safety Signal grade of F. Owners have filed 6 complaints, most often about the power train.

Audi A8 — photograph via Wikimedia Commons
Audi A8 (1994 generation) · Photo: Alexander-93 · CC BY-SA 4.0 · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov
ConfigurationPowertrainDriveEngine / motorCityHwyCombRangekWh/100miCharge (240V)Annual fuel*
A8 LPlug-in hybridAWD3.0L 6-cyl turbo + 100kW AC Induction212623 (31 MPGe blended)18 mi electric632.4 h$3,550
A8 LHybridAWD3.0L 6-cyl turbo + 48V Li-Ion172621———$3,900
A8 LHybridAWD4.0L 8-cyl turbo + 48V Li-Ion152318———$4,550

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 43033, 42786, 43003.

Emissions & certification

Source: EPA emission certificates
ConfigurationSmog ratingEmission standardWhere it can be sold newSmartWay
A8 L3 / 10California LEV-III ULEV125 / Federal Tier 3 Bin 125All 50 states (federal, all altitudes); California and states following California standards—
A8 L5 / 10California LEV-III ULEV70 / Federal Tier 3 Bin 70All 50 states (federal, all altitudes); California and states following California standards—

Certified for all fifty states, so it can be registered new anywhere in the U.S.

The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.

Specifications filed with NHTSA

Source: NHTSA vPIC

Dimensions Exterior

Body styleSedan/Saloon
Doors4
GVWR classClass 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg)

Engine Basics

Cylinders6
Displacement3 L

Engine Output

Horsepower335 hp

Fuel Economy

FuelGasoline

Seating

Seat rows2
Seating capacity5 seats

Transmission

DrivetrainAWD/All-Wheel Drive
TransmissionAutomatic
Transmission speeds8

Driver assistance

Standard: Anti-lock brakes, Automatic emergency braking, Backup camera, Electronic stability control, Forward collision warning, Lane departure warning

Optional: Adaptive cruise control, Blind-spot monitoring, Lane keeping assist, Rear cross-traffic alert

Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes one configuration rather than every trim (seen: quattro). Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada
Length208.7 in
Width (body, without mirrors)76.8 in
Height57.9 in
Wheelbase123.2 in
Track, front64.6 in
Track, rear64.2 in
Curb weight4,475 lb

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here one configuration: A8L 4-door Sedan. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.

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Factory warranty running out?

The 2021 Audi A8 is in the years where high-voltage electronics and module repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.

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Recalls (10)

Source: NHTSA recall database
○minor

Back Over Prevention

90TV
356,894 vehicles 58% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2026 vehicles. Please see the recall report for a complete list of models. A software error may prevent the rearview camera image from displaying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility." Risk A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash. Fix Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90TV. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 23, 2025.
NHTSA campaign 25V900000 reported Dec 19, 2025 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
●moderate

Electrical System

90VC
44,387 vehicles 82% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 SQ8, A6 SEDAN, A7, A8, Q7, Q8, RS6 Avant, RS7, RSQ8, S6 SEDAN, S7, S8, A6 Allroad, and SQ7 vehicles. Due to a software error, the instrument panel display may fail. Risk An instrument panel display that fails to show critical safety information, such as the speedometer or warning lights, increases the risk of a crash. Fix Dealers will update the instrument panel module software, free of charge. Owner notification letters were mailed April 24, 2025. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90VC.
NHTSA campaign 25V201000 reported Mar 31, 2025 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
!critical

Electrical System

93U6/93U8
93,196 vehicles 89% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2022-2024 RS e-tron GT, e-tron GT, Q4 e-tron Sportback, Q4 e-tron, 2020-2021 Audi A8, 2019-2024 e-tron Quattro, 2020-2024 e-tron Sportback Quattro, Q5, and 2021-2022 A7 vehicles. When using the industrial 220V/240V plug at the 100% charge setting, some home power outlets may be incapable of handling the electrical current required to utilize the compact charging system, causing the outlet or charging cable to overheat. Risk An overheated outlet or charging cable can increase the risk of a fire. Fix Owners are advised not to use the 220V/240V compact/portable charging cable and only use the 110V home charging cable or public charging stations. Dealers will supply a new 220V/240V compact/portable charging cable with an incorporated temperature sensor, free of charge. Owner notification letters were mailed on March 28, 2024. Owners may contact Audi customer service at 1-800-253-2834. Audi's numbers for this recall are 93U6 and 93U8.
NHTSA campaign 23V842000 reported Dec 13, 2023 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
●moderate

Back Over Prevention

91Ei
6,076 vehicles 93% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2021-2022 AUDI A8, A6 Allroad, E-TRON Quattro, 2022 S3, RSQ8, RS7, RS6 Avant, Q8, Q7, Q3, E-TRON Sportback Quattro, S5 Cabriolet, E-TRON GT, S5 Sportback, A7, A6, A5 Sportback, A5 Cabriolet, A4, A4 Allroad, A3, S8, SQ7, SQ8, S6, and S4 vehicles. The infotainment main unit may become damaged internally when the vehicle is shut off, resulting in an inoperative rearview camera display the next time the vehicle is started. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility." Risk An inoperative rearview camera display reduces the driver's rear visibility, increasing the risk of a crash. Fix Dealers will replace the infotainment main unit, free of charge. Owner notification letters were mailed June 6, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 91Ei.
NHTSA campaign 22V806000 reported Oct 26, 2022 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
○minor

Back Over Prevention

91DZ
170,296 vehicles 95% reported repaired
Problem Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Audi A8, RS7, RS6 Avant, RS5 Sportback, RS5 Coupe, Q8, Q7, Q5 Sportback, S4 Sedan, Q5, A7, A6, A6 Allroad, A5 Sportback, A5 Coupe, A5 Cabrioleet, A4 Sedan, A4 Allroad, E-Tron Sportback Quattro, SQ7, S5 Cabriolet, E-Tron Quattro, SQ8, SQ5 Sportback, SQ5, S8, S7, S6 Sedan, S5 Sportback, S5 Coupe, 2022 E-Tron GT, and 2021-2022 RSQ8 vehicles. Due to a software issue, a blank or black screen may be displayed instead of the rearview camera image when the vehicle is placed in reverse gear. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility." Risk A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash. Fix Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 91DZ.
NHTSA campaign 22V742000 reported Oct 5, 2022 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
●moderate

Suspension

42L5
31,058 vehicles 98% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A5 Sportback, RS5 Coupe, RS5 Sportback, S5 Sportback, 2020-2021 A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A6 Allroad, A6 Sedan, A7, A8, Q5, S4 Sedan, S5 Coupe, S5 Cabriolet, S6 Sedan, S7, S8, SQ5, 2021 Q5 Sportback, Q7, Q8, RS6 Avant, RS7, RSQ8, SQ5 Sportback, SQ7, and SQ8 vehicles. The rear axle alignment may not have been inspected after the repairs for Recall 21V-295 (42L1) were performed. Risk Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash. Fix Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L5.
Filed with NHTSARemedy instructions PDF
NHTSA campaign 22V034000 reported Jan 26, 2022 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
○minor

Back Over Prevention

91CR
2,857 vehicles 98% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi A8 and S8, 2022 Audi A5 Sportback, A4 Sedan, E-Tron GT, Q3, Q5, RS6 Avant, A3 Sedan, S5 Sportback, Q5 Sportback, Q7, Q8, RSQ8, SQ7, SQ8, and S3 Sedan vehicles. A software error may prevent the rear-view image from initially displaying when the vehicle begins to reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility." Risk A rear-view camera that does not display an image reduces the driver's rear view, increasing the risk of a crash. Fix Dealers will update the infotainment unit parameters, free of charge. Owner notification letters were mailed November 9, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 91CR.
Filed with NHTSARemedy instructions PDF
NHTSA campaign 21V825000 reported Oct 20, 2021 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
▲high

Seat Belts

69CR, 69CS
45,496 vehicles 99% reported repaired
Problem Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2021 Volkswagen ID4, Audi A4 Allroad, A4 Sedan, A5 Cabriolet, A5 Coupe, A5 Sportback, A6 Allroad, A6 Sedan, A7, A8, E-Tron Quattro, E-Tron Sportback Quattro, Q3, Q5, Q5 Sportback, Q7, Q8, RS5 Sportback, RS5 Coupe, RS6 Avant, RS7, RSQ8, S4 Sedan, S5 Cabriolet, S5 Coupe, S5 Sportback, S6 Sedan, S7, S8, SQ5, SQ5 Sportback, SQ7, SQ8, and 2021-2022 S3 Sedan vehicles. The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Cr Risk An unsecured child restraint system can increase the risk of injury during a crash. Fix Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 69CR (VW) and 69CS (Audi).
Filed with NHTSARemedy instructions PDF
NHTSA campaign 21V606000 reported Aug 5, 2021 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
▲high

Suspension

42L1
40,993 vehicles 99% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Q7, Q8, Q5 Sportback, SQ5 Sportback, RS6 Avant, RS7, RS Q8, 2020-2021 Audi S6 sedan, Q5, A8, S8, A7, A6 Allroad, A5 Cabriolet, A4 sedan, A4 Allroad, SQ5, S7, A6 sedan, S5 coupe, S4 sedan, S5 Cabriolet, A5 coupe, 2019-2021 RS5 coupe, A5 Sportback, S5 Sportback, RS5 Sportback vehicles. The lock nut on the trailing arm of the rear axle may break due to stress corrosion. Risk A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash. Fix Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L1.
Filed with NHTSARemedy instructions PDF
NHTSA campaign 21V295000 reported Apr 26, 2021 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →
▲high

Engine

97EV
238 vehicles 99% reported repaired
Problem Volkswagen Group of America, Inc. (Audi) is recalling certain 2019-2021 Audi A8 and 2020-2021 Audi S8 vehicles. A missing sealing pin may allow moisture to enter the engine control module connector, possibly causing a control module malfunction. Risk An engine control module malfunction may cause the engine to stall, increasing the risk of a crash. Fix Audi will notify owners, and dealers will inspect the engine control module connector for a missing sealing pin, and install it, if necessary. The connector will also be inspected for corrosion, and replaced as necessary. Repairs will be performed free of charge. The recall began March 12, 20121. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 97EV.
NHTSA campaign 21V111000 reported Feb 24, 2021 Volkswagen Group of America, Inc. the full filing, and every vehicle covered →

These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.

NHTSA defect investigations

Electrical System:Propulsion System — Pedestrian alert sounds closed

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021. On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject mat

Opened Jan 27, 2023 · closed Aug 7, 2023 · action DP22005 · the investigation’s page →

Whether any of this applies to one specific A8

A campaign covers a build range, not a model year, so two identical-looking cars from 2021 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Audi publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.

Hear about a recall before the letter does

The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2021 Audi A8, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

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Parts & accessories for the 2021 Audi A8

Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.

Find parts for this A8 →

Owner complaints

Source: NHTSA complaint database
6complaints filed

0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported

26 per 10,000 built · Audi reported 2,275 A8 built (its Early Warning production report to NHTSA)

Filed per year: 2021: 1 · 2022: 2 · 2024: 1 · 2025: 1 · 2026: 1

Most-cited components

Power Train 2
Electrical System 2
Structure 1
Fuel/Propulsion System 1
Engine 1
Back Over Prevention 1

In owners' own words

Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.

Total electrical shutdown over about 2 minutes. Stranded on road. All electrical systems failed rapidly. Strongly suspect this is part of known BSG/alternator issues with this model
Power Train Apr 4, 2024 NHTSA owner report · ODI 11581253
See attached document for complaint. I took my 2021 AUDI A8 to Audi Rockville located at 1125 Rockville Pike; Rockville, MD 20852 on July 18 to fix the recall. After waiting for 2 hours at the dealership, they told me they must go to BestBuy to buy a USB stick and asked if we could re-schedule which we did.
Electrical System Apr 2, 2026 NHTSA owner report · ODI 11728863
My backup camera turns off when I am backing up. I can no longer see behind my vehicle and I do not get any warnings that a car is approaching from either side of my vehicle. On a more minor note the sun roof opened on its own while I was driving on a highway during a rain storm
Back Over Prevention Nov 2, 2025 NHTSA owner report · ODI 11697005
fuel pump leak, dealer claimed the seal is broken from the manufacture, gave out strong gasoline smell
Fuel/Propulsion System Jul 10, 2022 NHTSA owner report · ODI 11473198
I was driving in the morning on a November day on a rural road. The rear moon roof exploded outward. The sound was deafening and scared my passenger and I. The center glass exploded outward, scattering glass outside and inside of the car. I believe that if this happened that passengers in the car could be hurt.
Structure Dec 31, 2021 NHTSA owner report · ODI 11445709
Delay in change gear especially from full stop, vehicle recoil, jump, jolt, sometimes with loud noise
Power Train Jul 10, 2022 NHTSA owner report · ODI 11473200

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Crash ratings

Source: NHTSA NCAP

NHTSA has not published 5-Star crash ratings for this model year.

Service bulletins & campaigns

Source: NHTSA manufacturer communications
Extended coverage on file 2 filings by the manufacturer with NHTSA naming this model year

The term and the vehicles it covers are the manufacturer’s, as NHTSA’s summary of each filing states them; a dealer checks one particular car by its VIN. Every warranty extension on file, all makes →

Communicationsfiled with NHTSA 2,134
Most recentmanufacturer date 2026-09-25
Kindsas classified by NHTSA 2095 service bulletins, 19 others, 17 service campaigns

Most often about: Electrical System, Equipment, Unknown Or Other, Engine, Structure.

  • TSB_2083409_1 Service bulletin
    2026-09-25 · Unknown Or Other
  • This bulletin states that technicians are required to report to the manufacturer when a vehicle has flooded, and specify the height to which the vehicle has been flooded.
  • TSB_2052680_2 Service bulletin
    2026-09-25 · Unknown Or Other
  • This bulletin provides information for reporting safety related information to the manufacturer.
  • TSB_2076396_3 Service bulletin
    2026-09-23 · Electrical System
  • This bulletin provides information regarding driver assist systems; Audi adaptive light, Audi pre sense system fault, adaptive cruise assist inop (DTC C12D5FA).
  • TSB_2063336_5 Service bulletin
    2026-09-23 · Electrical System
  • This bulletin provides information when DTC C12BFF0 is stored in the lane change modeul or the radar sensor; intersection assist/lane change assist are inoperable.
  • TSB_2074846_5 Service bulletin
    2026-09-22 · Steering
  • This bulletin provides information about vibrations and rotational steering vibrations.
  • TSB_2065871_4 Service bulletin
    2026-09-22 · Steering
  • This bulletin provides informaiton when DTC B200FF0 is stored.
  • TSB_2020552_15 Service bulletin
    2026-09-22 · Visibility/Wiper
  • This bulletin provides service information regarding exterior glass cleaning.
  • TSB_2078648_4 Service bulletin
    2026-09-18 · Structure — Body
  • This bulletin provides information about billing for a broken sunroof glass panel.

A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.

Diagnostic trouble codes on file

Source: NHTSA manufacturer communications and complaints

Codes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.

CodeWhat it meansMost often filed underWhere it appears
P0327
P0327 on Audi →
Knock sensor 1 signal too low.Engine2 bulletins
P0328
P0328 on Audi →
Knock sensor 1 signal too high.Engine · Knock sensor →2 bulletins
P0332
P0332 on Audi →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine2 bulletins
P0333
P0333 on Audi →
Manufacturer-defined — the meaning is set by the automaker, not the standard.Engine2 bulletins

Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.

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Common questions about the 2021 A8

Source: EPA, NHTSA and manufacturer press kits

Does the 2021 Audi A8 have any recalls?

NHTSA has posted 10 recall campaigns for the 2021 Audi A8, 1 of them rated critical. The most serious on file is 23V842000, covering Electrical System. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.

How safe is the 2021 Audi A8?

NHTSA has not published a crash-test rating for the 2021 Audi A8 yet. On the recall record WhichTrim grades it F (57/100), which measures open and severe recalls rather than crash protection.

What is the fuel economy of the 2021 Audi A8?

Across the 3 EPA-rated configurations of the 2021 Audi A8, the best EPA combined figure is 23 mpg (MPGe on the electrified versions). Figures are the EPA's own, per configuration, and every one is listed above.

What are the dimensions of the 2021 Audi A8?

Transport Canada measured it at 208.7 in long, 76.8 in wide (body, without mirrors), 57.9 in tall, on a 123.2 in wheelbase. Curb weight: 4,475 lb. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2021 Audi A8?

Owners have filed 6 complaints with NHTSA about the 2021 Audi A8, most often about power train, electrical system, structure. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.

How clean is the 2021 Audi A8?

The EPA smog rating for the 2021 Audi A8 runs 3 to 5 out of 10 across its configurations. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California LEV-III ULEV125, California LEV-III ULEV70, Federal Tier 3 Bin 125, Federal Tier 3 Bin 70 — which the table above lists per configuration.

Are there service bulletins for the 2021 Audi A8?

The manufacturer has filed 2134 service bulletins and related communications with NHTSA for the 2021 Audi A8, most often covering electrical system, equipment, unknown or other. The most recent is dated 2026-09-25. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.

What we hold, and what an empty row means

Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.

DataHeldSourceWhat it covers — or what empty means
Fuel economy & configurations3 configurationsEPA certification recordsEvery configuration the EPA certified for sale, with its own test figures.
Emission certificates3 configurationsEPA emission certificatesSmog rating, standard and the sales area that decides where the car can be sold new.
Recalls10NHTSA recall campaignsA complete federal register: every campaign covering this model year, with severity and advisory flags.
Owner complaints6NHTSA complaint databaseAlso complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratingsnoneNHTSA NCAPNHTSA has not tested this model year. Cars are selected for testing, so untested is not unsafe.
Service bulletins2134NHTSA manufacturer communicationsEverything the manufacturer told its dealers about a defect or malfunction, short of a recall.
Investigations1NHTSA Office of Defects InvestigationOpen and closed defect investigations, with the agency's own narrative.
Driver-assist crash reportsnoneNHTSA Standing General Order 2021-01No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like.
Specifications filed with NHTSA12 fieldsNHTSA vPIC, decoded from VIN patternsWhat the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder.
Measured dimensions7 fieldsTransport Canada, Canadian Vehicle SpecificationsLength, width, height, wheelbase, track and curb weight, measured on the North American versions.
Trims, pricing & equipmentnoneManufacturer press kitWe have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind.

Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.

JSON for this page · API