I have a hellcat redeye, approximately one of your $100k cars. I've thoroughly enjoyed the car in the nearly 2 years I've owned it. But, I'm barely over 6,000 miles, and I've killed 2 batteries and just had the starter replaced and a loose ground (fixed/replaced under warranty). The loose ground may not have been a factory defect: I had to have the wiring harness replaced after some rodents chewed through some of the wiring...
And I will preface this by saying that Audi isn't without fault either, but my also $100Kish RS 5 has in two years had two issues: a battery failure (determined to be a battery fault, not a vehicle fault), and improper drainage in one of the doors, leading to an accumulation of water, that had a tech advisory to add an additional drainage hole.
