Power Train Problems of Audi S8

Water pump and thermostat has a faulty design that causes coolant to leak either around the o ring and/or the elbow. I am in my third water pump and thermostat with only 69,000 miles on the vehicle. Issue appears to be common on the ea824 (4. 0 twin turbo) engine with hundreds of reports from the complete range of ea824 equipped vehicles (s8, rs7, s6, s7, a8 etc). Average mileage of those reported are 65k miles or so. Hundreds of similar issues are reported via various Audi forums and social media groups. Poses a fire risk since coolant leaks all over the front of the engine. Poses another safety risk if the engine seizes due to overheating while in motion. Either would be catastrophic.

See all problems of the 2015 Audi S8 🔎.

When started up on 11/17/22, multiple warning lights came on in rapid sequence advising of an electrical system & battery malfunction. Warning was to not drive the vehicle and contact service. I shut off the vehicle and re-started it. The same warnings were displayed. I was about 0. 8 mile from the dealer so I attempted to drive it to their location. On the way, the warnings continued to show. After about 0. 6 miles, the transmission fully disengaged from the engine. I coasted to the side of the street, shut off the vehicle, re-started it (same warnings showed) but the transmission was reset and worked. I drove to the dealership where my Audi mechanic knew exactly what the issue is--there is a huge problem with a continental-supplied 48v belt starter/generator that needs to be replaced. However, none are available and won't be available until sometime in q1 2023 or later. The replacement part is backordered with every Audi dealership experiencing this issue with multiple models in the my's of 2018 through 2023. Had this issue occurred on an interstate highway (complete loss of transmission), I could have been rear-ended by a vehicle following me. In a multi-lane situation, coasting to the either side of the highway may not have been possible. . . . Again, creating a very hazardous situation for me and other vehicles. I tried to attach the Audi technical service bulletin showing the extent of the issue within Audi's model range and model years but it would not upload to your site. The TSB is 27 22 45 2058831/5 September 27, 2022. This is issue is leaving thousands of Audi vehicles unsafe and un-driveable. I urge you to act immediately to force Audi to recall these vehicles.

See all problems of the 2021 Audi S8 🔎.

Turbochargers failure due to clogged oil screen. Had to replace both turbocharger with new units and replaced oil screen with updated version.

See all problems of the 2013 Audi S8 🔎.