[Vimana]

I have smoke problem with my zafira, while I’m driving it starts smoking and while I’m driving again when I switch it off and on again, smoke stops. The colour of smoke is whiteish and I can tell this that I can hear the sound of engine changes when smoking starts. I took it to mechanic but obviously they maybe know what is wrong with it and they don’t say it or either they don’t know at all. Any advice many thanks 🙏