Which is the most expensive car in world?

Determining the single most expensive car in the world is difficult because prices can fluctuate wildly based on customization, rarity, and the specific buyer. However, consistently vying for the top spot are bespoke, one-off creations from companies like Rolls-Royce and those built by coachbuilders. There isn't a definitive, universally agreed-upon answer. Any car claiming the title is usually based on a specific sale or asking price at a particular moment.