Originally Posted by Godmal
I've read this before, how in the heck is a hpfp $10k?
It isn't. In those particular VW CR systems, the entire system becomes contaminated with metal particles if the HPFP fails, leading to the whole system having to be replaced. The newer design isolates the HPFP so that any potential failure doesn't take the rest of the fuel system with it. They have also stopped using the faulty Bosch HPFP's that were seemingly prone to failure.
There's no telling what type of design Mazda's CR system has, but there's no reason to think they'll have the same issues.