Juddering on part throttle

[Tony2327]

Hi all 

After your thoughts please, I have a 2017 A6 3.0 Bi tdi that's developed a slight stuttering on part throttle. 

It seems to be slowly getting worse.

The issue seems to be only when on slight throttle held at the same revs, the car seems to stutter as if struggling for power or even fuel! 

When given bigger throttle inputs it's fine and pulls well. Car has done 65k with FSH.

I'm wondering whether it's any of the following, dirty/clogged DPF (warning light has come on 2-3 times over the past 6 months each time a good blast clears it), a swirl flap problem, a clutch problem?

 

Anyone experienced anything similar would love to hear how you sorted it. 

Thanks 

[Steve Q]

Id recommend a diagnostic check to see if any fault codes flag up. Could be a dpf but could equally be a maf sensor.