Table 1 shows one common engine and engine cooling related problems of the 2025 Audi S5.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling 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.
Known-best assesment-piston skirt defect and non-disclosure of prior issues: approximately only three months after purchase of a brand new 2025 Audi S5 on 6/11/25 , I received a letter from Audi of America acknowledging a potential piston skirt defect/failure resulting from faulty material and/or workmanship. They extended the part warranty for 8 years or 80,000 miles but this doesn't help me feel safe driving this vehicle. I was informed the defect cannot be proactively repaired and would only be addressed after failure. This instruction is unreasonable, unsafe, and contrary to the purpose of purchasing a new vehicle. Audi has previously settled piston-related class litigation, yet no one at Audi henderson disclosed any history of piston issues during the sale. Had I been informed of this material risk, I would not have purchased the vehicle. I now feel unable to safely or confidently use this vehicle for long-distance or out-of-state travel. Upon researching it I found this: the mileage at which a piston skirt defect will cause total failure varies widely, potentially from mere miles to tens of thousands of miles, or could last the entire life of the engine if it's a minor defect. It is highly risky to drive with a known defect, as damage accumulates over time and can lead to a complete and sudden engine failure and could lead to catastrophic, potentially deadly consequences. factors affecting the rate of worsening :the time frame for failure depends almost entirely on the nature and severity of the initial problem, as well as driving habits. * severity of the defect: a small scuff might not cause issues for a long time, while a cracked or broken skirt can lead to catastrophic failure very quickly (e. G. , within 5 miles or even minutes). * maintenance: regular oil checks and changes help manage the symptoms but cannot prevent eventual failure if the defect is significant. * early reports: some drivers have reported problems with low-mileage vehicles.