There is no definitive answer to this question as it is subjective and depends on personal preferences. However, some of the most renowned luxury car brands globally include Rolls-Royce, Bentley, Mercedes-Benz, BMW, Audi, Jaguar, Land Rover, Porsche, and Ferrari, among others. Each brand is known for its unique style, design, craftsmanship, performance, and features. It is essential to consider individual needs, preferences, and budget when determining which luxury car brand is the best for someone.