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.
The worst 2021 Audi A4 Allroad problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Driver assistance1
- Transmission1
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Driver assistance1
- Transmission1
Recalls 1
Tires
- What is wrong
- 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.
Recall number 22V034000 · Recall details
Technical service bulletins for the 2021 Audi A4 Allroad 798
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- This bulletin provides informaiton on the use of the PICO-NVH tool (VAS 611 015).
- This bulletin provides infomration when basic settings are not possible after repair; DTC P17F900 stored...
- This special notice is to inform dealers to return the parts listed and only order the successor parts...
- This bulletin provides information regarding the current top concerns being addressed by the Audi Digital...
- This bulletin proides service information when there is a prompt to take over the steering wheel (hands...
- This bulletin provides information when the starter battery is discharged or malfunctioning.
- This service information bulletin provides information when the convernience opening does not work.
- This bulletin provides information when there is an Audi pre sense warning, warning jolt, or brake...
- This bulletin provides information to aid in diagnosing the vehicle locking system.
- This bulletin provides information when the engine is not runing smoothly; all gas engines.
2021 Audi A4 Allroad crash test ratings
Government 5-star crash tests. Higher is safer. Each row is a body style and drivetrain that was tested.
| Version | Overall | Frontal | Side | Rollover |
|---|---|---|---|---|
| Audi A4 allroad SW AWD | Phrases found in the owners' own descriptions, so one complaint can mention several symptoms. | Phrases found in the owners' own descriptions, so one complaint can mention several symptoms. | 5 | Phrases found in the owners' own descriptions, so one complaint can mention several symptoms. |
What 2021 Audi A4 Allroad owners say
Most recent owner complaints, unedited.
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.
Compare the 2021 Audi A4 Allroad
Other model years
Questions about the 2021 Audi A4 Allroad
Is the 2021 Audi A4 Allroad reliable?
Owners have filed 2 complaints about the 2021 Audi A4 Allroad, fewer than a typical A4 Allroad model year.
What is the 2021 Audi A4 Allroad year score?
The 2021 Audi A4 Allroad scores 94 out of 100 (good). The score compares it with the other model years of the Audi A4 Allroad: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.
What is the most common problem with the 2021 Audi A4 Allroad?
Driver assistance and stability, with 1 complaint. Next is transmission (1).
How many recalls does the 2021 Audi A4 Allroad have?
1 recall, covering tires.
Is the 2021 Audi A4 Allroad safe in a crash?
The 2021 Audi A4 Allroad was crash tested, but no overall score was published. Partial scores: side 5 out of 5.
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