V12 Misfire & Cat ingestion

[Vanquish Mark]

Having recently purchased my dream car (Vanquish 2), I have done a fair bit of research into the common pitfalls. This lead me to all of the chat around the misfire, fuel burning on the primary cats, cats braking up and being ingested by the engine during scavenging that seemingly affects all V12 Astons.

I happened to be having a chat with two Ex Aston dealership mechanics the other day, both of which shrugged their shoulders and didn't know what I was talking about when I brought this up. One even said that he has seen that issue on Mercedes cars but never and Aston.

Given that between Vanqish 1&2, DB7, DB9, Rapide, V12 Vantage and Virage (sorry if I've missed any) there must be a fair number of these engines on the road with an enormous collective mileage under their belts.

All of this has me wondering just how much of an issue it really is, I would love to know if anyone on here has experienced it first hand. It seems to be reminiscent of the 911 IMS issues that were headline news but in reality on affected and small percentage of cars.

It would be good to get a measure of exactly how common this issue really is for the benefit of all V12 owners on here.