At 16:00, when Mr. Sitharaman sits in to the Esteem car, the model of that car was launched in India in the year 2004.
When Harshad picks up Sitaraman in his car, the car they are shown to be leaving in is the face-lifted Maruti Suzuki Esteem which was introduced in 2004. In fact, the Esteem brand was only introduced by Maruti in 1994. Before that, it was called Maruti 1000, which should have been the actual car in that scene, since the scene is set in 1991-1992.