Quitting PhD in my third year
Will it give a bad impression?


Lots of people quit their PhDs.  It's not a big deal.  But I suppose finishing makes a better impression of yourself.

Quitting your PhD creates a negative impression of your university and supervisor.  However, that shouldn't stop you from doing what is best for you.


  Will it have severe consequences on my further career (for example in industry).


Only if you want a job that requires a PhD.  Most industry employers do not care if you did not compete your PhD.


  I have 7 publications


You should consider if you can complete your PhD in a very short period.  Most PhD students do not have seven publications.