As crazy as it sounds, these single twin scroll turbo BMW engines are reasonably reliable. The N54 was the first main stream turbo charging venture and had some issues, but the N55 and B58 have proven to be fairly good. BMW sucks at building reliable V8 engines and in car electronics. It is good at building an inline 6 engine though. The use of the B58 should be really good for international emissions requirements which is probably helping Ineos with homoligation to country requirements. The video below shows some really trick parts of the B58. Oh and the tuning community for the B58 is amazing. So if you want to add 200 HP to the engine, you will be able to do that from day 1. This will help it appeal to more buyers even if tuning isn't appealing to everyone.