The most expensive car in the world is the rolls-royce la rose noire droptail. Touted as the costliest car ever made at a staggering rs. Rolls-royce la rose noire droptail serves as the british luxury car maker’s tribute to automobile craftsmanship. Rolls-royce la rose noire droptail | ₹250 crores | $30 million. The most expensive car in the world is the rolls-royce la rose noire droptail.Leclercq on Wikimedia Commons Known as the most expensive new car of all time, the Bugatti La Voiture Noire was sold for roughly $18. It’s a one of a kind hypercar with an 8. W16 engine.