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      02-02-2013, 10:32 AM   #124
HighlandPete
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Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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I gather these 'cruising' mpg comparison comments are just OBC readings.

There can be quite a bit or error if taken from the OBC, unless you are checking accuracy by 'brim to brim' calcs. Say there is a +/- error of up to 10% (that is possible against actual consumption) could be a 10mpg difference in OBC figures between two cars, even if all other things were equal at around 70mph. Most unlikely the other factors are equal either.

HighlandPete
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