I am new to Audi Forums and need some help...

I have an Audi A4 B7 2.0 tdi, engine code bre, 2007.

I have recently serviced the car, new oil, fuel and air filters, oil and brake fluid change etc.
The car starts no problem, pulls cleanly in all gears with no stutter etc but when the car is 'idle' it stutters intermittently and appears to be getting worse. Sometimes its like a gentle miss, and sometimes it jolts.
I have had a diagnostic check and all the values are fine with no codes showing. I have cleaned out the throttle body which was dirty and also the egr, but this hasn't fixed the problem.
The other thing that is noticable is the drop in fuel economy since the service (according to the trip computer). The trip computer was re set as per the handbook when I did the service. Since then all of the readings with the exception of the fuel have been fine, but the fuel and ave fuel figures have been very eratic.

Can anyone help please

 

Could be pcv or vacuum leak. Did you change the plugs and the coil pack?