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Subscribe to this threadGeneva '08 Preview: Subaru Legacy 2.0D & Outback 2.0D
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psarhjinian @ Feb 8th 2008 9:35AM
They don't need a urea system, but they do need something to get their emissions down to a reasonable level. Urea injection is one method, and it's what Mercedes and VW are doing. Honda is supposedly avoiding the use of it in the upcoming Accord diesel.
Urea injection isn't bad in and of itself. It does add an extra layer of complexity and it is something you must keep maintained in order to keep your car's emissions in check.