The Rolls-Royce Phantom is a British ultra-luxury saloon automobile made by Rolls-Royce Motor Cars, in the United Kingdom. It was launched in 2003 and is the latest Rolls-Royce branded car. It has a 6.75 L, 48-valve, V12 engine that produces 453 hp (338 kW) and 531 ft·lbf (720 N·m) of torque. The engine is derived from BMW's existing V12 powerplant.

It is 1.63 m (63 in) tall, 1.99 m (74.8 in) wide, 5.83 m (228 in) long, and weighs 2485 kg (5478 lb). The body of the car is built on an aluminium space frame and the Phantom can accelerate to 100 km/h (62 mph) in 5.7 s. It has a six-speed automatic transmission and double wishbone suspension.

Only 15 percent of components are sourced from BMW models such as the BMW 7 Series. This comprises the powertrain, and electronics. The Phantom uses a unique chassis platform, body, interior, and retains the traditional Rolls-Royce design cues.

Instead of a tachometer, the car has a power reserve dial indicating how much of the engine's power is left available to the driver.

The rear doors are rear-hinged, a style commonly referred to as suicide doors, but called 'coach doors' by Rolls-Royce. Because of the rear-seating position in relation to the rear inner-door handles, buttons are mounted on both C-pillars which operate hydraulic motors in order to close the rear doors. An electronic lock prevents the doors from being accidentally opened when moving. The car will automatically brake to a walking speed if a coach door remains open when driving off.

The traditional Spirit of Ecstasy ornament has an electronic retraction mechanism to prevent theft and protect pedestrians in the event of an accident. It may also be retracted by the driver at the touch of a button. It also contains a sensor which detects movement, and will retract if tampered with.

The 'RR' logos on each of the wheel hubs are independent bezels in order to always remain upright while the wheel is rotating.