Audi A4 Problems, Recalls and Mobile Repair
1,059 owner complaints and 26 safety recalls are on file with NHTSA for 2008–2024 A4 models. Here is what owners report most, which years drew the most complaints, and which fixes a mobile mechanic can do where the car sits.
NHTSA data pulled September 2026.
The most reported A4 problems
The systems named most often in NHTSA owner complaints for 2008–2024 Audi A4 models, and whether a mobile mechanic can usually help. A complaint can name more than one system.
| System | Complaints | Share | Mobile mechanic? |
|---|---|---|---|
| Engine | 251 | 24% | Diagnose first |
| Airbags | 238 | 22% | Dealer or recall |
| Electrical system | 198 | 19% | Often in the driveway |
| Steering | 119 | 11% | Diagnose first |
| Driver-assist systems | 93 | 9% | Dealer or recall |
| Transmission and drivetrain | 71 | 7% | Usually a shop |
| Fuel system | 69 | 7% | Diagnose first |
| Engine and cooling | 35 | 3% | Diagnose first |
Symptoms owners describe
Complaints are reports owners file with NHTSA, the federal vehicle-safety agency. NHTSA does not verify each one, and a year or model that sold more cars usually gets more complaints, so treat the counts as a map of what to check, not a reliability score. Data pulled from NHTSA's public complaint and recall databases in September 2026.
Complaints by model year
The 2008 A4 drew the most complaints (191). Newer years have had less time on the road, so their counts are still growing.
Audi A4 recalls
26 safety recalls cover 2008–2024 A4 models. The most recent 12 are below.
| Reported | Campaign | Model years | System | What can happen |
|---|---|---|---|---|
| 2024-04 | 24V251000 | 2023 | Airbags | A deactivated front passenger air bag will not deploy during a crash, increasing the risk of injury. |
| 2022-10 | 22V806000 | 2022 | Equipment | An inoperative rearview camera display reduces the driver's rear visibility, increasing the risk of a crash. |
| 2022-10 | 22V742000 | 2021 | Driver-assist systems | A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash. |
| 2022-05 | 22V368000 | 2022 | Engine and cooling | An engine stall can increase the risk of a crash. |
| 2022-01 | 22V034000 | 2020–2021 | Tires | Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash. |
| 2021-11 | 21V874000 | 2017–2020 | Seats | A disabled passenger air bag increases the risk of injury in the event of a crash. |
| 2021-10 | 21V825000 | 2022 | Driver-assist systems | A rear-view camera that does not display an image reduces the driver's rear view, increasing the risk of a crash. |
| 2021-08 | 21V606000 | 2021 | Seat belts | An unsecured child restraint system can increase the risk of injury during a crash. |
| 2021-04 | 21V295000 | 2020–2021 | Suspension | A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash. |
| 2019-07 | 19V547000 | 2017–2018 | Airbags | A disabled passenger air bag increases the risk of injury in the event of a crash. |
| 2018-11 | 18V836000 | 2017–2018 | Airbags | If the air bag does not deploy correctly in the event of a crash, it can increase the risk of an injury. |
| 2018-06 | 18V427000 | 2008–2009 | Airbags | An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death. |
Plus 14 older recalls. Check your VIN for the full list.
Safety recall repairs are done free by the brand's dealers. A mobile mechanic cannot do recall work. Enter your 17-character VIN at nhtsa.gov/recalls to see open recalls on your exact car. "Park it" means NHTSA and the maker say not to drive the vehicle until it is fixed.
What A4 owners told NHTSA
“'takata recall' monday morning I went out to start my car to bring my son to school and it would not start.”
“I did not have any check engine light and this seems like it is a known issue with Audi vehicles where the pcv valve is over pressuring the engine and causing gaskets/seals the blow.”
“Overheating in traffic replaced water pump, gasket.”
“June 4 2016 my vehicle stalled while driving on the freeway.”
What a mobile mechanic can do on an A4
Most everyday A4 repairs fit in a van, including work on the electrical system, exterior lights, brakes. A mobile mechanic can read codes, test the battery and charging system, replace brakes, starters and alternators, and handle most cooling-system parts where the car is parked.
Transmission rebuilds, internal engine work and anything under a safety recall belong in a shop or at a dealer – a good mobile mechanic will tell you that before driving out. What mobile mechanics can and can't do
Many European models need brand-specific scan tools and parts. Before booking, ask the mechanic whether they work on your make and have the right diagnostic tool – many mobile mechanics do, and they will say so.
What common jobs cost
| Job | Repair shop average | Mobile mechanics we list | Note |
|---|---|---|---|
| Diagnostic | $125–183 | $85–130 | Usually credited toward the repair |
| Battery replacement | $456–493 | $125–250 | Some mobile prices are install only |
| Brake pads, per axle | $335–394 | $125–215 | Pads and rotors: $310–390 mobile, $549–629 at a shop |
| Starter | $565–796 | $200–440 | Some mobile prices are labor only |
| Alternator | $809–1,088 | $200–500 | Some mobile prices are labor only |
Repair shop average: RepairPal national estimates, parts and labor before tax (updated Sep 3, 2026); pads and rotors from Kelley Blue Book (Jun 2026). Mobile: the middle half of prices that 90 mechanics listed on MobileMechanics.ai publish on their own websites (checked Oct 2026); some are labor only, so ask whether parts are included. Prices vary by vehicle and city; the mechanic quotes after looking. How we got these numbers
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Audi A4 recalls and news
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Audi A4: questions
What are the most common Audi A4 problems?
In NHTSA owner complaints for 2008–2024 models, the systems named most often are the engine, airbags, electrical system. The 2008 model year drew the most complaints (191).
How many recalls does the Audi A4 have?
NHTSA lists 26 safety recalls covering 2008–2024 models. Enter your VIN at nhtsa.gov/recalls to see which apply to your car.
Are Audi A4 recall repairs free?
Yes, safety recall repairs are done free by the brand's dealers. A mobile mechanic cannot do recall work, but can fix most other problems where the car is parked.
Can a mobile mechanic work on an Audi A4?
Yes, for most everyday repairs: diagnostics, batteries, starters, alternators, brakes and many cooling-system parts. Transmission and internal engine work need a shop. Find a mobile mechanic in your city.
Where this data comes from
- NHTSA – vehicle safety complaints (public complaint database)
- NHTSA – recalls lookup by VIN
- NHTSA – Product Information Catalog and Vehicle Listing (vPIC)
Complaint and recall records for Audi A4 model years in range, retrieved September 2026. Owner quotes are short excerpts from public NHTSA complaint records, lightly cased for reading.