Quote:
Originally Posted by Rocklobster
It seems to me that the US only emissions control subsystems on the 328d are not as thoroughly tested/engineered as the rest of the car/engine. One of the reasons the government's war on diesels in the US is so frustrating...
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Hopefully you will update us on the current problem...
But I wanted to mention some things:
1) Even the Europeans have had DPFs for 10 years or more, so any problems with it are not the result of poorly-designed/US-only systems.
2) BMW almost certainly used the early 335d/X5d vehicles (10K units, >10K units) as a test bed for the current 328d DEF/SCR systems. Note that the DEF tanks are separate on the 328d, partly because the 335d single-unit setup is so bad (the X5d always had separate tanks), with a single fill point (rather than two.)
3) BMW has been beset by bad quality control on NOx sensors, and the high cost of said sensors. Is that BMW's fault? not fully.