[E90Fleet]

Originally Posted by Feanor

But since you ask, a quick search on google showed this article, where Ford believe that ASS can save between 3.5% and 10% on fuel: http://www.businessfleet.com/Channel...n-Average.aspx

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And Ferrari think 15% fuel saving and 23% Emissions saving is possible with their system

http://www.pistonheads.com/doc.asp?c=143&i=22574