Audi model-year index
A4
Start with the year on the registration. Each year opens live recall campaigns and owner reports, alongside source-backed problem files.
- Listed year span
- 2015 to 2025
- Model years
- 11
- Documented files
- 5
- Federal records
- Live on each year
Choose the year before the problem
Which A4 are you researching?
A model name can stay unchanged while the hardware does not. The exact year keeps your search inside the right records.
- Problem files
- 0
- Federal data
- Live
Recall and complaint search ready
- Problem files
- 0
- Federal data
- Live
Recall and complaint search ready
- Problem files
- 0
- Federal data
- Live
Recall and complaint search ready
- Problem files
- 1
- Federal data
- Live
Engine may stall or the vehicle may lose power
- Problem files
- 3
- Federal data
- Live
Rearview camera image may not display
- Problem files
- 2
- Federal data
- Live
Suspension component may fail
- Problem files
- 1
- Federal data
- Live
Seat component may not remain secure
- Problem files
- 1
- Federal data
- Live
Seat component may not remain secure
- Problem files
- 1
- Federal data
- Live
Seat component may not remain secure
- Problem files
- 0
- Federal data
- Live
Recall and complaint search ready
- Problem files
- 0
- Federal data
- Live
Recall and complaint search ready
Source-backed problem files
Documented Audi A4 conditions
Higher safety relevance appears first. The order does not measure reliability.
2022 Audi A4 · Engine & cooling
Engine may stall or the vehicle may lose power
The semiconductor inside the engine control unit may short-circuit and cause an engine stall.
2021 Audi A4 · Visibility & cameras
Rearview camera image may not display
Due to a software issue, a blank or black screen may be displayed instead of the rearview camera image when the vehicle is placed in reverse gear.
2021 Audi A4 · Safety restraints
Seat belt may not restrain an occupant
The rear seat belt automatic locking retractors may deactivate early, which can prevent the child restraint system from securing properly.
2017 to 2020 Audi A4 · Body & structure
Seat component may not remain secure
The cable connecting the seat heater to the Passenger Occupant Detection System (PODS) may have a contact fault, causing the software to misdiagnose a malfunction and disable the passenger air bag.
2020 to 2021 Audi A4 · Steering & suspension
Suspension component may fail
The lock nut on the trailing arm of the rear axle may break due to stress corrosion.
Before diagnosing the Audi A4
Use the right check before buying a part
A symptom can have several causes. These guides help separate a useful clue from a diagnosis that still needs testing.
Check recalls by VIN
A VIN search checks the displayed NHTSA records for an unrepaired safety recall associated with one vehicle. A model search shows only the wider campaign population.
Read guide ↗When a car is unsafe
A warning light does not always mean the same thing, but weak brakes or smoke leave little room for experimentation. Damaged tires and certain recall instructions can do the same.
Read guide ↗Why symptoms overlap
“It makes a weird noise” is useful human language. Diagnosis begins when that language is tied to the exact vehicle and its operating conditions.
Read guide ↗Words owners use
The workshop phrase may not be yours.
Choose the description that sounds closest, then read the complete symptom pattern.