Thread: Drop in MPG
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      01-17-2013, 06:02 PM   #5
HighlandPete
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Drives: BMW F11 535i Touring
Join Date: Mar 2007
Location: Scotland, Highland Region

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Definitely check the ECT from the hidden menu. Thermostat issues and running low ECT is very common cause of mpg drop off in the diesel models.

HighlandPete