There are multiple problems with Audi's start-stop technology that outweigh the modest fuel efficiency gains. Owners complain that the system will shut off the power steering and brake systems at dangerous times and cause the accelerat The …Continue reading article "Start-Stop Defects"
Oil Starved Turbochargers
The twin-turbochargers in Audi's 4.0L V8 engine can become starved of oil because of a clogged filter. This can cause strange acceleration noises, difficulty starting the engine, or sudden stalls.Continue reading article "Oil Starved Turbochargers"
What Owners Complain About
Sometimes it helps just to tally up the complaints and see where the biggest stacks are. Use this information to learn about troublespots or to run for the hills.
4th Generation (2011–2018) S6 Key Numbers
Are the twin-turbochargers in Audi's 4.0L V8 engine starved of oil?
An investigation has been opened into dozens of complaints about the engines being difficult to start or suddenly shutting down due to turbocharger problems.…keep reading article "Investigation Opened into Audi V8 Turbocharger Failure"
Start-stop technology shuts off the engine when the vehicle comes to a complete stop in order to save on fuel consumption and emissions.
That's a good thing. But it also disables the power steering and brakes way too early. And it is a little slow to re-engage those systems when the vehicle starts moving again. That's a really bad thing.…keep reading article "Defects in Audi's Start-Stop Technology Make it Dangerous to Drive"
Vehicle was in motion when it started shaking roughly. The car stalled and wouldn't turn back on. I had it towed home and was able to diagnose seized turbo compressors. Replaced the turbos which fixed the problem but at an enormous cost.
The turbos on the car both broke at the intermediate shaft before 75,000 miles. The car was cruising on the freeway, and the moment I slowed down to take the exit, the car lost power and shut down. I had to make an emergency stop on the side of the exit with little to no room to pull over.