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Hi, been lurking for a while and enjoyed reading and using the vast amount of knowledge around on this forum (de-flapped, egr cleaned etc :) )
My 320d is struggling to do more than 40mpg (mix of urban and motorway driving like a granny) and, after looking on here, I've just done a check on the operating temp of the engine and it isn't getting any higher than 69deg (and it varies between 60 & 69) - could be the cause of the MPG problem I think!
This engine has an EGR thermostat and my question is which thermostat would you change first, EGR or the standard engine one?
Any hints welcome.

Thanks in advance
 
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