I'd also like to know the split between petrol and diesel.
I suspect most manufacturers have engine failure issues with diesels. eg BMW swirl flaps. Renault turbos, BMW turbos , etc..
Modern diesel technology is evolving very quickly and people are experimenting on their customers.
The exception is VAG: coil packs, turbos, superchargers TSI engines.. - all on petrol engines. And oil pumps on diesels You sometimes think they have stretched design staff too thinly...