RoadVitals

2021 Audi A4 Allroad

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
2
+1 complaint in 30 days
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
1
Latest Jan 26, 2022
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
0
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
0

Overview

Our database contains 2 NHTSA owner-reported complaints for the 2021 Audi A4 Allroad, most frequently naming the driver assistance and powertrain (other) categories. 1 safety recall has been issued covering this model year; and 798 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Driver assistance150.0%
  • Powertrain (other)150.0%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

1 campaign cover this model year

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
22V034000

SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY; TIRES

Jan 26, 2022
31,058 units potentially affected
The 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.
The risk: Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.
The 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.
Volkswagen Group of America, Inc.Manufacturer number 42L5View on NHTSA.gov

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

Powertrain (other)
Filed Oct 20, 2026

A few minutes into the drive the transmission oil is too hot warning light came on and the car went into a 'limp' mode, car could only be driven less than 10mph. If this occurred while making a turn or in the highway it could have been disastrous or even fatal. We took it to the dealer and by then the engine light was on without the transmission oil is too hot. Car was still on limp mode. Final verdict was that the Transmission control module was bad. Car only has a little over 45k miles but out of warranty due to being over 4 years.

NHTSA ID
11772540
Incident
Oct 3, 2026
Driver assistance
Filed Aug 12, 2024

On several occasions while vehicle was stationary at a stoplight or moving very slowly the emergency braking system deployed, with seat belt tensioner activated and brakes applied with characteristic thunk sound. I could discern no threat at the time, but other cars were nearby. Recently, though, while in the middle of a left turn across three lanes of oncoming traffic (the nearest car was a block away) the car suddenly braked to a full stop. Nothing was behind or alongside me. It took about two seconds for the brake to release and I could accelerate forward. If there had been more traffic there could have been a front or rear collision. I took the car to the dealer who kept it all day and did nothing to it. Review of internet sites indicates that this is a not uncommon problem and that Audi has no solution. My son has 2 Audis, (SQ5s), and says this has happened to him in both of his vehicles.

NHTSA ID
11608025
Incident
Jul 30, 2024

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

TSB_2070568_7

This bulletin provides informaiton on the use of the PICO-NVH tool (VAS 611 015).

TSB_2064848_2

POWER TRAIN

This bulletin provides infomration when basic settings are not possible after repair; DTC P17F900 stored in the TCM.

SM 49-2026

SERVICE BRAKES

This special notice is to inform dealers to return the parts listed and only order the successor parts going forward.

TSB_2082976_3

This bulletin provides information regarding the current top concerns being addressed by the Audi Digital Business Solutions (DBS) team.

TSB_2075199_3

ELECTRICAL SYSTEM

This bulletin proides service information when there is a prompt to take over the steering wheel (hands off detection).

TSB_2080517_5

ELECTRICAL SYSTEM

This bulletin provides information when the starter battery is discharged or malfunctioning.

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Audi A4 Allroad by model year
YearComplaintsRecallsInvestigationsIssue Index
2026000—
2025000—
2024500—
2023110—
2022110—
2021Viewing210—
2020301034.5
2019300—
2018930—
2017315053.0
2016153054.0
2015254051.0
2014464051.8
2013874050.9

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.