NHTSA Data Explorer
Audi A4
Data refreshed August 27, 2026
Select a model year to filter results to that year of the Audi A4.
Complaints
3,017
Active records
Recalls
33
Active records
TSBs
3,093
Active records
Filing history
Monthly totals over the last 20 years. Click a legend item to show or hide that series.
Reported severity
Based on consumer complaints filed since 2000. Recalls and TSBs do not include severity data.
Deaths
0
Injuries
80
Crashes
114
Fires
51
Top reported issues — Audi A4
Click a category to expand its values.
Operating state
Condition issue
Lighting behavior
Reporting mechanism
Safety restraint issue
Electrical issue
Fluid issue
Engine behavior
Driver assistance issue
Braking behavior
Infotainment behavior
Performance issue
Noise
Transmission/drivetrain behavior
Powering on/off behavior
Vibration/harshness
Thermal issue
Safety restraint behavior
Steering behavior
Starting behavior
Access/entry issue
Wiper/washer behavior
Recent change
Smell
HVAC behavior
Ride/handling behavior
Communication/network issue
Electrified system issue
Recent filings
The 10 most recent filings for each type.
2020 AUDI A4
Filed Aug 12, 2026
My 2020 Audi A4 has an open safety recall campaign. Audi Corporate and my local dealership are formally refusing to perform the recall remedy unless I pay over $2,000 out-of-pocket to replace a broken J949 SOS Telematics Module. The manufacturer claims the module is separate from the recall, but its total failure physically blocks their diagnostic tools from applying the mandatory safety update. Conditioning a federal safety recall on a customer-paid repair violates recall compliance…
2020 AUDI A4
Filed Aug 11, 2026
The contact owns a 2020 Audi A4. The contact stated that while driving at an undisclosed speed, the message SOS module no longer connected was displayed on the instrument panel, and the vehicle failed to shut off. The contact believed that the failure was a safety issue due to the loss of communication, including the hands-free features, mobile phone connectivity, and the regular safety features failing to operate as needed. The vehicle was taken to a dealer to be diagnosed, and it was…
2020 AUDI A4
Filed Aug 10, 2026
The contact owns a 2020 Audi A4. The contact stated that the emergency-call/communication system was inoperable. The vehicle was taken to the local dealer to be repaired under TSB: 91-20-29; however, the software update was unsuccessful due to the module. The dealer informed the contact that the module needed to be replaced. The vehicle was not repaired. The contact had not experienced a failure prior to the vehicle being taken to the dealer. The manufacturer was contacted, but no assistance…
2015 AUDI A4
Filed Jul 15, 2026
Oil consumption is extremely high this vehicle burns way to much oil in short amount of time. Oil has to be added every 300 to 400 miles and there are no leaks present
2023 AUDI A4
Filed Jul 13, 2026
The contact owns a 2023 Audi A4. The contact stated that while driving at an undisclosed speed, the vehicle independently accelerated. No warning lights were illuminated. The brake pedal was depressed; however, the vehicle failed to stop as needed. The vehicle crossed a busy street and drove down an incline. The vehicle jumped a curb and came to a stop at a nearby hotel parking lot. There was no injury sustained. A Police report was not filed. The vehicle was driven to the residence. The…
2018 AUDI A4
Filed Jul 2, 2026
A vehicle diagnostic scan dated 04/15/2026 showed electrical communication faults involving vehicle control modules. The scan showed U014100, described as “Lost Communication With Body Control Module ‘A’,” with status listed as passive/sporadic. The scan also showed U112100, described as “Data bus message missing,” with status listed as active/static. This is being reported as a safety concern because body-control module, gateway, and data-bus communication faults can affect vehicle electrical…
2018 AUDI A4
Filed Jul 2, 2026
A vehicle diagnostic scan dated 04/15/2026 at approximately 88,502 miles showed a stored transmission electronics fault: P084100, described as “Transmission fluid pressure sensor/switch A range/performance,” with status listed as passive/sporadic. This indicates a transmission / powertrain control concern involving the transmission fluid pressure sensor, transmission electronics, wiring, control logic, pressure monitoring, or related powertrain components. The vehicle also has prior…
2018 AUDI A4
Filed Jul 1, 2026
An Audi dealer installed 245/40R18 93H tires on this 2018 Audi A4, while the vehicle placard/specification requires 245/40R18 97H. The lower load index reduces capacity from 1,609 lb per tire to 1,433 lb per tire, approximately 704 lb total across four tires. This creates a safety risk because load-rated tires affect vehicle stability, heat buildup, braking, steering/cornering, suspension loading, and tire failure/blowout risk. After discovering the mismatch, the concern was reported to the…
2018 AUDI A4
Filed Jul 1, 2026
The vehicle displayed a low coolant warning and the coolant reservoir was low. Audi dealer service records dated on or about 02/14/2025 document the concern as: “client states low coolant warning was on, coolant reservoir is low, diagnose and advise.” The dealer performed coolant-related work involving the thermostat gasket / coolant hoses or connections to the coolant reservoir, ran the vehicle to operating temperature, and rechecked. The concern is being reported because the coolant…
2018 AUDI A4
Filed Jul 1, 2026
The rear-view camera intermittently fails to engage when the vehicle is shifted into reverse. When the camera does display, the image sometimes shows horizontal glitch lines/artifacts. This affects backing visibility and parking safety and creates a risk of collision with pedestrians, objects, vehicles, or property. The concern was reported to Audi service along with other electrical/driver-assistance symptoms, suggesting a possible camera, wiring, module, signal-processing, or broader…