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. 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.Rolls Royce Phantom VIII EWB – Rs 15+ Crore (Nita Ambani) Before Yohan Poonawalla’s Rolls Royce Phantom, Nita Ambani’s custom Rolls Royce Phantom VIII EWB is the most costly vehicle.