I am fairly sure this is a new thing, and I have not just noticed it.
When going at low speeds (<10mph) and especially when going leaning round corners, the bike has developed a slight kind of creaking noise, seems to be coming from where the motor/gearbox is. I have jumped up and down on the seat (not literally! ;) ) and it does not appear to be the suspension.
I have also not noticed any major decrease in power or speed, however range does not appear to be as good as it used to be, however that could just be because the bike is nearing 5,500 miles.
Anything to be concerned about or do all vectrix bikes do this?