Table 1 shows one common engine and engine cooling related problems of the 2015 Audi S6.
| Problem Category | Number of Problems |
|---|---|
| Engine And Engine Cooling problems |
Turbos blew causing the vehicle to lose power while trying to merge in traffic.
Driving on the new jersey turnpike and both turbochargers failed. Car lost power and I had to steer to side of the highway without power steering and brakes from far left lane. Audi service says bearings starved of oil and seized. They said this is a common problem with the 4. 0 twin turbo Audi engines and that the oil feed line gets blocked and starves the turbochargers of oil, resulting in bearing failure. Repair cost is $9,000. Car has less than 70,000 miles. Audi has a technical service bulletin on file with the NHTSA that specifically addresses this known problem. Audi north America will not assist with cost of repairs.
Multiple turbo failures. Engine shook violently then suddenly stopped in the middle of the road. This same issue happened 3 times affecting both turbos. It may be due to faulty oil filter/strainer. From online research (link below) this is a common problem for c7 Audi S6. . Read more...