Table 1 shows one common electrical system related problems of the 2025 Audi S5.
| Problem Category | Number of Problems |
|---|---|
| Electrical System problems |
The contact owns a 2025 Audi S5. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power. There was no warning light illuminated. The vehicle failed to respond while attempting to drive. The vehicle was restarted after the failure. The vehicle was taken to the dealer; however, the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and informed the contact that the issue could be related to a lane switch failure. The approximate failure mileage was 8,577.
Since the day of delivery, this 2025 Audi S5 has experienced daily electronic and safety system failures. At least once per day, on startup, the vehicle throws 10 or more warning codes disabling safety-critical systems including blind spot monitoring, lane departure warning, forward collision avoidance, rear traffic alert, and adaptive lighting. These failures occur without warning and persist for varying durations before clearing on their own. Additionally, on 5 occasions the adaptive cruise control refused to activate, displaying a false "door open" warning with all doors and trunk confirmed closed. On 4 occasions the power trunk failed to latch using the electronic controls. The 360-degree parking camera system intermittently stops rendering surroundings, displaying only the vehicle graphic with no camera feed. The vehicle was brought to the selling dealer for service. After one hour, the dealer stated no issue was found. A battery diagnostic was requested based on a documented case of an identical 2025 S5 with the same symptoms traced to a faulty 12v battery. The dealer declined to cover the diagnostic under warranty. The service manager later acknowledged these are known platform issues and confirmed a software update is expected from the manufacturer in July 2026. The vehicle already has the latest available software update (TSB 2079690, kd2, version 03. 10. 00/c) installed and the problems persist. The dealer has confirmed there is no current fix available. These failures put the driver and other road users at risk, as safety systems are non-functional during the error state with no indication of when they will restore.
System malfunctions for new all new 2025 Audi S5 including drive system malfunction, loose wheel, brakes limited functionality, parking break malfunction, stabilization control malfunction, driving dynamics system malfunction, hold assist malfunction.
I began my lease for a brand-new 2025 Audi S5 on July 14, 2025. The vehicle was delivered with a dent in the door, which the dealer repaired before I could take possession. The dent repair was completed on July 22, 2025, at which time I took delivery. On July 23, I informed my sales representative that the sos/ecall emergency communications system was not functioning. This safety feature, designed to automatically contact emergency services after a crash, has never worked since delivery. I returned the vehicle to the selling dealer on July 28, 2025. As of August 7, 2025, the vehicle remains in the dealer’s service department awaiting repair of the sos module. No firm completion date has been provided. This defect means the vehicle cannot automatically summon emergency assistance in the event of an accident, creating a significant safety risk to occupants.