Yes and no. MMC have zero control on quality care on parts brought in. There isn't a car on this planet be it the cheapest or most expensive where a part will fail.
I am not certain I agree with that approach?
When you buy something you buy the combined product. MMC DO own the issue with sub parts as they have combined them into their product. Your contract is with MMC for the total car. You don't have sub contracts for the wheels? That would be like saying my cake tastes like sawdust because the sugar supplier shipped rubbish. You ship the cake you own the flavour.
I agree re the fact that suppliers fail and parts break but that is not the customers issue.
Apologies, I should have perhaps stated the obvious. `Yes, MMC is responsible for fixing the car regardless of who made the part. I was referring to the comment I originally quoted where it was said problems like this should not be happening on a car at this price point. Parts fail, it's a fact. And they fail across all OEMs regardless of cost. The point being is a failed sensor isn't something that MMC, or any OEM, could prevent from happening.
MMC have their faults as do other `OEMs but it is a bit much to assume MMC dropped the ball because a part that was brought in failed.