By using Ecopro in my 2.0d I usually get around 53mpg, driving in comfort mode I usually achieve 47mpg so the benefits are around 10%. Yes it is more sluggish but as others have said you have to drive in a different way to achieve the benefits in Ecopro mode. I only tend to use it on motorways.
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Now - LC1 20d Carbon Black
Gone - F25 20d Space Grey
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