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330cd diesel coupe poor fuel economy

1K views 3 replies 2 participants last post by  lindy33 
#1 ·
hi, i have a 330cd diesel 204 bhp coupe, i am only averageing 29 mpg and that is driving very carefully on country roads, if driven normally about 26 mpg, car runs fine no rattles black smoke or anything, it has new air, fuel and breather filters fitted, no fault codes either, iv tried a new air flow meter and map sensor and still no joy. any ideas would be appreciated. i had a 530 diesel a couple of years ago and averaged 45 mpg with it so bit dissapointed with this car now.
 
#3 ·
this one does not have a dpf it has a cat but iv taken that out so its straight through, iv tried a set of injectors, it has a new turbo with electronic actuator and no fault codes, iv remapped it and it goes like a rocked and its made it better on fuel it only used to be about 27 mpg
 
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