The Lemon Index

All cars · Audi A4 · 2021

2021 Audi A4. Advanced data.

The raw numbers: engines, recall campaign numbers, failure mileage and manufacturer communications.

Lemon Index–100 = average car
Complaints6NHTSA, first 3 years

Complaints by system

SystemShare of complaints
Speed control33%
Suspension33%
Airbags17%
Automatic emergency braking17%

One complaint can name more than one system, so shares can add to more than 100%.

Severity, all complaints

TotalCrashesFiresInjuriesDeathsTows
630102

As reported by owners to NHTSA. Not verified.

Recall campaigns 4

  • 22V742000 Oct 2022 Back Over Prevention / Display Function

    Defect. 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 compl

    Risk. A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.

    Remedy. 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.

  • 22V034000 Jan 2022 Tires

    Defect. 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.

    Remedy. 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.

  • 21V606000 Aug 2021 Seat Belts / Rear/Other / Retractor

    Defect. 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 fa

    Risk. An unsecured child restraint system can increase the risk of injury during a crash.

    Remedy. 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).

  • 21V295000 Apr 2021 Suspension / Rear / Axle / Non-Powered Axle Assembly

    Defect. 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.

    Remedy. 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.

Crash ratings by version

VersionOverallFrontSideRollover
Audi A4 4 DR AWD★★★★★★★★★☆★★★★★★★★★★
Audi A4 allroad SW AWDnot ratednot rated★★★★★not rated

Engines and drivetrains 2

EngineTransmissionDriveCity / hwy / combinedFuelFuel cost/yr
2.0L 4-cyl turbo hybridAuto (AM-S7)AWD24 / 31 / 27Premium$2,850
3.0L 6-cyl turboAuto (S8)AWD20 / 28 / 23Premium$3,350

EPA test versions for this model year. Fuel cost is the EPA's current estimate, not the price in that year.

YouTube repair topics

199 videos about the 2017–2025 Audi A4, 63.6M views.

TopicVideosViews
Oil changes & service5951K
Cooling system1394K
Infotainment, battery & electrical2251K
Brakes & ABS191K
Transmission & shifter179K

Nearby model years

YearLemon IndexComplaintsSoldTop system
2018451634,566Brakes
201917526,435Brakes
2020–4–Electrical
2021–6–Speed control

Sources: NHTSA complaints, recalls, investigations and manufacturer communications; EPA fuel economy data; YouTube video titles. Complaints are owner reports, not proof of a defect.

Updated · Free to use with credit: Source: The Lemon Index (lemonindex.com). Get the data

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