Hi guys ,my gti has done 19000 miles its an 06 plate ,up until the other day it was running great ,however i was on the motorway one night and opened her up and reached about xx mph ,when i stopped to pick up the missus the engine was sort of stuttering and juddering when idling,now its doing it all the time when idling and also decides to rev itself from 1000 to 2000 revs at random when in low gear ,other wise its driving perfectly ,im new to site so sorry if this has been posted before ,please help..