HBarlow
Veteran Member
That's an excellent basic explanation. Unfortunately those who should read it probably won't. It's easier to remain uninformed and blame VW.Validation testing. A 150,000 mile durability test with a suitable number of cold-starts takes at least 6 months to do running 24/7 including the cold-soak (engine not running) periods in preparation for including cold starts in the test procedure. And that's if nothing goes wrong. If something does go wrong ... start over.
It's one thing to demonstrate compliance with the various requirements for a new car ... quite another to demonstrate that it will remain compliant 150,000 miles later.