2006 Audi A4 problems & reliability
295 owner complaints filed with NHTSA for the 2006 Audi A4, alongside 3 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
5 complaints report injuries (5 injured).
Federal crash records (FARS 2020–2023): 2006 Audi A4 vehicles were involved in 12 fatal crashes with 8 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Exterior Lighting | 159 | 54% |
| Air Bags | 73 | 25% |
| Electrical System | 21 | 7% |
| Engine | 15 | 5% |
| Power Train | 14 | 5% |
| Unknown OR Other | 7 | 2% |
| Vehicle Speed Control | 7 | 2% |
| Engine and Engine Cooling | 6 | 2% |
| Fuel/propulsion System | 5 | 2% |
| Fuel System, Gasoline | 5 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 60,000 miles (middle 50% between 43,000 and 84,825 miles), based on 190 complaints that included mileage.
Complaints by incident year
What owners report
“Gas gauge displaying incorrect level of fuel. Oil level notification improperly displaying level of oil.”
Fuel/propulsion System · filed Sep 13, 2022
“The contact owns a 2006 Audi A4. The contact stated that while driving approximately 45 mph, the wife crashed into the rear of a second vehicle. During the crash the front driver side air bag did not deploy, however, the passenger side airbag did deploy, and both the front and rear driver side and passenger side…”
Air Bags · filed Nov 8, 2021
“Purchased the vehicle a few months ago (july of 2020). Before buying it I was told that the warning chime for the seatbelt had stopped working , so I took it to my local german auto shop to see what would needed to fix it. To my surprise, it's a part in the instrument cluster that would need to be replaced, but it's a…”
Seat Belts · filed Sep 28, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
356 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2006 Audi A4. The 10 most recent:
This bulletin provides information on the additional reporting requirements for safety related inquiries.
A0023742052680_4 · Service Bulletin/Repair Instructions · issued Oct 4, 2023
Inside the Rings | Volume 12, Spring 2023
DC_AudiRingsV12 · Service Bulletin/Repair Instructions · issued Apr 28, 2023
In conjunction with the Massachusetts DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,907 Audi owners in the State of Massachusetts on March 13, 2023.
TRMDMV_MA_Audi · Service Bulletin/Repair Instructions · issued Mar 13, 2023
In conjunction with the New Mexico DMV, Audi will be sending Takata airbag recall reminder notices to approximately 389 Audi owners in the State of New Mexico on March 13, 2023.
TRMDMV_NM_Audi · Service Bulletin/Repair Instructions · issued Mar 13, 2023
In conjunction with the Colorado DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,174 Audi owners in the State of Colorado on February 13, 2023.
TRMDMV_CO_Audi · Service Bulletin/Repair Instructions · issued Feb 13, 2023
Takata recall and 3G turndown
DC_Rings_VOL10 · Service Bulletin/Repair Instructions · issued Feb 10, 2023
In conjunction with the New York DMV, Audi will be sending Takata airbag recall reminder notices to approximately 5,165 Audi owners in the State of New York on October 17, 2022.
TRMDMV_NY_Audi · Service Bulletin/Repair Instructions · issued Oct 17, 2022
In conjunction with the South Carolina Department of Public Safety, Audi is sending Takata airbag recall reminder notices to approximately 1,121 Audi owners in the state of South Carolina on September 19, 2022.
TRMDPS_SC_Audi · Service Bulletin/Repair Instructions · issued Sep 19, 2022
In conjunction with the Georgia Department of Revenue - Motor Vehicle Division and Department of Driver Services, Audi sent Takata airbag recall reminder notices to approximately 565 Audi owners in the State of Puerto…
TRMDMV_PR_Audi · Service Bulletin/Repair Instructions · issued Jul 25, 2022
In conjunction with the Virginia DMV, Audi will be sending Takata airbag recall reminder notices to approximately 2,026 Audi owners in the State of Virginia on July 21, 2022.
TRMDMV_VA_Audi · Service Bulletin/Repair Instructions · issued Jul 21, 2022
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2006 Audi A4 has 3 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2006 Audi A4?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 60,000 miles — budget accordingly if the car is approaching that mileage.