I use google like anything. Around a month back I randomly searched for term 'car recommend' and the results shocked me. The first link was of
carwale.com's car recommendation system. Even US giant
edmunds was at number 2 position. I then thought maybe I am trying in google india, I tried for google.com and still this link managed to reside at page 1 among 6 crore results. Amazing!
I have used the system many times and overall liked it. For novices and new buyers, its like heaven while for hardcore masters it works like a very advanced search.
They have launched another cool service,
Car Valuation System. I haven't used it though!