This position was a production planner in France. The first contact was made by the HR representative by phone. She interviewed me in french and switched randomly in english to see if I could speak english properly. Lots of people at nissan europe (in France) are not french so english is the business language and is mandatory.
After this first interview on the phone, she called me back to schedule a second interview face to face with her and the same day, right after, an interview with the operational manager of the position AND the boss of this manager.
The first interview with the HR was kind of the same as the first one but deeper in details.
The second interview was 100% in english with the 2 managers.
Overall these three interviews were "classical", presentation of yourself, description of the position and question from the managers.
During the three interviews, only english was mandatory, either to work at the office or with the different manufacturing sites.
Nevertheless, even if my three interviews were almost perfect from my point of view and from the impression they gave me, they did not keep me because "I don't speak spanish". So they interviewed me 3 times, they almost spoke only english, they knew from my resume that I did not speak spanish, they never asked me if I did, but they told me : "I was a perfect candidate, all the interviews went well, but you don't speak spanish". Which was never a condition written in the job description or asked.
So for me, they were at the end completely unprofessional and coward.They made me loose time and hope when they could have told me after the first phone interview. They probably had someone else who was recommended by the big boss and they took him. Which is fine, but they should be honest.
To summer up : classical interview process but completely unprofessional company.