Problem Lookup âș Audi âș A4 allroad âș 2021
Car problem report
2021 Audi A4 allroad problems, recalls and owner complaints
What the 2021 Audi A4 allroad has been recalled for and what owners report, from official government data. Updated October 25, 2026.
- 1safety recall
- 2owner complaints
- 0crash reports
- 0fire reports
- 0injuries reported
The least complained-about Audi A4 allroad year on file: 2 complaints, against an average of 35 for the other model years.
Every Audi A4 allroad model year with its number of owner complaints. Pick a year to compare.
What goes wrong with the 2021 Audi A4 allroad?
The components named most often in the 2 owner complaints. One complaint can name several, so the shares can add up to more than 100%.
Has the 2021 Audi A4 allroad been recalled?
1 U.S. safety recall. Repairs are free at a franchised dealer; some are done over the air.
Tires 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.
What do 2021 Audi A4 allroad owners report?
2 of the 2 complaints, the most recent for the most-reported components, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
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.
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 trafficâŠ
2021 Audi A4 allroad: questions owners ask
Is the 2021 Audi A4 allroad reliable?
NHTSA data alone cannot rate reliability, but it shows what owners reported. Owners filed 2 complaints with NHTSA about the 2021 Audi A4 allroad; the most common categories were forward collision avoidance (1, 50%), power train (1, 50%). There is 1 safety recall.
What are the most common problems with the 2021 Audi A4 allroad?
Across 2 owner complaints filed with NHTSA, the categories mentioned most often are forward collision avoidance (50% of complaints), power train (50% of complaints). One complaint can name several components.
Does the 2021 Audi A4 allroad have any recalls?
Yes. NHTSA lists 1 recall for the 2021 Audi A4 allroad; the most recent (campaign 22V034000, 2022-01-26) concerns Tires. Recall repairs are free at a franchised dealer; check your VIN at nhtsa.gov/recalls.
Check your own A4 allroad
Counts are a starting point, not a verdict: popular models collect more complaints because more of them are on the road, and NHTSA does not verify individual reports. To see whether a recall is still open on your car, enter your VIN at nhtsa.gov/recalls (U.S.) or your registration at check-vehicle-recalls.service.gov.uk (UK). Had a safety problem? Report it to NHTSA; complaints are what trigger investigations and recalls.
Data: NHTSA Office of Defects Investigation recall and complaint databases (public domain), retrieved October 25, 2026. Model year 2021 only.