2021 Audi A4 Allroad

Routine

Owners filed 2 complaints about this vehicle with federal regulators, most often about the automatic emergency braking. It has been recalled 1 time.

Not among the Audi A4 Allroad years to avoid. Which Audi A4 Allroad years to avoid →

Most common 2021 Audi A4 Allroad problems

1 of the 2 complaints (50%) are about the automatic emergency braking.

ComponentReportsCrashesFiresInjuries
Power Train · transmission1
000
Forward Collision Avoidance › Automatic Emergency Braking · automatic emergency braking1
000

1 safety recall

Part 573 reports
Filed Jan 26, 202231,058 vehiclesVolkswagen Group of America, Inc.

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.

All 1 campaign on file, newest first.

What owners reported

Newest filings
Power Train
Filed Oct 20, 2026CA

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.

Forward Collision Avoidance › Automatic Emergency Braking
Filed Aug 12, 2024MD

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.

All 2 complaints, reproduced as filed.

Across model years

Worst on record: 2013
YearComplaintsRecallsFiresDeathsAssessment
20244000Routine
20231100Routine
20221100Routine
2021 — this page2100Routine
202030100Routine
20193000Routine
20189300Routine
201731500Routine
201615310Routine
201525400Routine
201446430Routine
201387410Routine

Compare every A4 Allroad year →

Reading this record

No unusual pattern of severe incidents in the complaint record.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Recall repairs are free for as long as the recall stands. Check whether a specific car still has open work at NHTSA's VIN lookup.

Most recent recall on file: Jan 26, 2022. Source: NHTSA Office of Defects Investigation.