If you are looking for an SUV with a good luxury feel, we would recommend that you look at the compact SUV segment instead of the mid-size market. While you will get mid-size SUVs for under Rs 15 lakh, they will all be the lower variants, which will not look or feel very luxurious.
The best options here would be the Kia Seltos and the Tata Sierra. However, as we mentioned, if you do look at a segment below, you could get a Hyundai Venue, which has a very premium cabin in both look and feel and will be very well equipped too. This is the SUV we would recommend to give you that luxury feel at your price point.