i have now just spent a few days driving a 520d ed - so i can now say that my 520d with the m performance is significantly more responsive, the slow rev climb on the standard is noticeable compared to the 'improved' one zipping up to 4-5k without any delay - more noticeable acceleration out of tight bends, mines a manual and it does promote stick wiggling to keep it on song (no real oomph until after about 2k-) but thats part of the fun isnt it?
be interested to see how it went with the auto
mpg wise -the 520ed was showing 55mpg at end of few days - mine regularly shows 53mpg - i appreciate the on board may not be that accurate but hopefully gives an idea ...............
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