I don't remember many details , only that it is an old Sci-Fi movie which I saw on TV about 10-15 years ago , it had a robot/cyborg/android woman as the main character , blonde with long hair if I remember correctly , and I remember a scene where she was naked in a car ( limousine perhaps ) with some guy , where they had sex and afterwards she killed him or just killed him ( with no sex but still naked )...
Please help I've been trying to find the movie for years now...
Thank you in advance.

Sounds like Species 2

Happens in Nemesis 4: Death Angel (http://www.imdb.com/title/tt0113949/reference)