Audi A4

Where it stands out against its peers

• Electrical system: more complaints than 98% of 2020 cars — 72% of its 127 complaints, where an ordinary 2020 car has 22%.
• Unknown or other: more complaints than 98% of 2020 cars — 46% of its 127 complaints, where an ordinary 2020 car has 17%.
• Back over prevention: more complaints than 97% of 2020 cars — 34% of its 127 complaints, where an ordinary 2020 car has 4%.

Same model year only, at least 30 peer cars, zeros included. Every car has a worst part; this shows which, and how far from ordinary it is. A high share means more to check, not a verdict.

Before you buy one

Built from what this car fails on, not from general knowledge of the model.

• ELECTRICAL SYSTEM — 34 owners reported this
• ELECTRICAL SYSTEM,BACK OVER PREVENTION — 16 owners reported this
• BACK OVER PREVENTION — 2 owners reported this
• ELECTRICAL SYSTEM,BACK OVER PREVENTION,FORWARD COLLISION AVOIDANCE — 2 owners reported this
• ELECTRICAL SYSTEM,LANE DEPARTURE,FORWARD COLLISION AVOIDANCE — 2 owners reported this

Crash test

Crash-tested by NHTSA, the American road safety agency.

Specification

Recalls

Filed by the manufacturer with a regulator. A recall is repaired free of charge, whoever owns the car now.

49% of 2022 cars have more recall campaigns than this one, and an ordinary one has 3. More of them means more to check the service record for, not a worse car.

• 21V295000

  A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.

  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.

• 21V606000

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

  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).

• 21V825000

  A rear-view camera that does not display an image reduces the driver's rear view, increasing the risk of a crash.

  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.

• 21V874000

  A disabled passenger air bag increases the risk of injury in the event of a crash.

  Dealers will replace the connecting cable and either the heating mat or entire seat cover, free of charge. Owner notification letters were mailed January 7, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 74E3. This recall is an expansion of Recall 19V-547 (74D9). Vehicles previously repaired under 19V-547 will need to return for the new remedy.

• 22V034000

  Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.

  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.

• 22V368000

  An engine stall can increase the risk of a crash.

  Dealers will replace the engine control unit, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 24iH.

• 22V742000

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

  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.

• 22V806000

  An inoperative rearview camera display reduces the driver's rear visibility, increasing the risk of a crash.

  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.

Regulator investigations

Opened by NHTSA's Office of Defects Investigation. An investigation is a question the regulator asked about a possible defect, not a fault it found — most end without a recall.

• Engine stalling - fuel pump failure

  Preliminary evaluation, opened April 2008, closed August 2008.

• Stuck-open throttle

  Engineering analysis, opened June 2004, closed February 2005.

• Brake and clutch pedal bracket

  Preliminary evaluation, opened January 2002, closed July 2002.

• Degraded braking in wet weather

  Engineering analysis, opened August 2000, closed March 2002.

• Degraded braking wet weather condition

  Preliminary evaluation, opened April 2000, closed August 2000.

• Ignition switch

  Recall query, opened March 2000, closed November 2000.

• Power brake booster vacuum by-pass

  Recall query, opened June 1999, closed November 2000.

What the maker told its dealers

Service bulletins are the manufacturer's own repair guidance to dealers, filed with NHTSA. A bulletin is not a defect finding; the count rises with how many things a maker writes down, not only with how many go wrong.

Audi filed 458 bulletins about the 2025 A4.

• Electrical system: 187
• Structure: 44
• Engine: 23
• Power train: 23
• Suspension: 21
• Steering: 17
• Service brakes: 14
• Fuel/propulsion system: 12
• Equipment: 10
• Visibility/wiper: 10
• Other: 97

• This bulletin provides a statement regarding the bottleneck of supply for VW approved oil types VW 504.00 and VW 507.00. · August 2026
• This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible. · August 2026
• This bulletin provides information when DTC B105A1A, B103E25 is stored in 0017; fuel tank level implausible. · August 2026
• This service information TSB provides warranty coverage information for vehicles with a broken sunroof panel. · August 2026
• This bulletin provides informatoinw hent here are scratches or a coating on the cover of the instrument cluster, or particles inside of the housing. · August 2026
• This bulletin provides information when there is a film/visible rings on the clear glass cover of the headlight when the dipped beam is switched on. · August 2026
• This bulletin provides informatio on a software update for the gateway; warning lamps for various vehicle systems in the instrument cluster. · July 2026
• This bulletin provides informaiton when the engine is not running smoothly, misfiring. · July 2026

450 more.

Grouped by NHTSA's top-level system; a bulletin filed under a sub-heading counts toward its system.