Rolls-Royce La Rose Noire Droptail | World’s Most Expensive Car | ₹270 Crores | $30 Million. The most expensive car in the world is the Rolls-Royce La Rose Noire Droptail. There are 2 Mercedes-Benz cars under 50 Lakh currently available in India for sale . The Top Mercedes-Benz cars under 50 Lakh are Mercedes-Benz GLA (Rs. Lakh), Mercedes-Benz A-Class Limousine (Rs. Lakh).Nita Ambani Owns The Most Expensive Car In India, An Audi A9 Chameleon Valued At Approx 100 Crore. Only 11 Units Of This Model Exist Worldwide.