DO NOT GO TO NEPTUNE MOTORS AT ALL. If I have to describe them in one word, they are FRAUDS.
I bought a car through them a year ago and I ended up spending close to a Lakh in repairing it over the one year. They cheated me buy tweaking the udometer reading in the car which was more than a 1,00,000 and showed it as 45,000. They used all sorts of chemicals to make the car shine to camouflage the scratches and other flaws. This is pure fraud and I hope the government shuts down the agency for cheating people. They do not let you speak to the actual seller.
In the interest of making money both the buyer (guess is involved) and the agency fool customers.
In a nutshell, DO NOT go to Neptune Motors.
I paid them 500 as registration fees ( infact they are the only second hand car dealers in Hyderabad who ask for this money, no one else does - Dr Cars also doesnt do it.). They NEVER got back to me with the options. I kept reaching them on the numbers given by them, they wouldnt respond. I dropped emails to them.. but no response.
Finally I approached Dr. Cars on a Friday evening and had the car in my garage with all the papers and technical assessment complete on Tuesday.
DO NOT go to Neptune. Refer to http://www.carwale.com/forums/viewthread-7992.html for further information