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The Phantom’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Mulsanne doesn’t offer pre-crash pretensioners.
The Phantom has standard whiplash protection, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the whiplash protection system moves the headrests forward to prevent neck and spine injuries. The Mulsanne doesn’t offer a whiplash protection system.
The Phantom has a standard Light Braking Function, which uses forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The Mulsanne doesn't offer collision warning or crash mitigation brakes.
The Phantom has standard PostCrash, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Mulsanne doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
An active infrared night vision system standard on the Phantom helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard and even aims one of the vehicle’s headlights in the direction of the person or object. The Mulsanne doesn’t offer a night vision system.
The Phantom’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The Mulsanne doesn’t offer a lane departure warning system.
The Phantom has a standard Panoramic View to allow the driver to see objects all around the vehicle on a screen. The Mulsanne only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
To help make backing safer, the Phantom’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Mulsanne doesn’t offer a cross-path warning system.
The Phantom’s driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Mulsanne doesn’t offer a driver alert monitor.
The Phantom has standard Rolls Royce Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The Mulsanne doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the Phantom and the Mulsanne have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, blind spot warning systems and rearview cameras.
The Phantom comes with a full 4-year/unlimited-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The Mulsanne’s 3-year/unlimited-mile basic warranty expires 1 year sooner.
The Phantom’s corrosion warranty is 1 year longer than the Mulsanne’s (4 vs. 3 years).
Rolls-Royce pays for scheduled maintenance on the Phantom for 4 years and unlimited miles. Rolls-Royce will pay for oil changes, lubrication and any other required maintenance. Bentley doesn’t pay scheduled maintenance for the Mulsanne.
For smoother operation, better efficiency and fewer moving parts, the Phantom has an overhead cam design, rather than the old pushrod design of the engines in the Mulsanne.
The Phantom’s 6.8 turbo V12 produces 58 more horsepower (563 vs. 505) than the Mulsanne’s standard 6.8 turbo V8. The Phantom’s 6.8 turbo V12 produces 33 more horsepower (563 vs. 530) than the Mulsanne Speed’s standard 6.8 turbo V8.
On the EPA test cycle the Phantom gets better fuel mileage than the Mulsanne (12 city/20 hwy vs. 11 city/18 hwy).
To lower fuel costs and make buying fuel easier, the Rolls-Royce Phantom uses regular unleaded gasoline (premium recommended for maximum performance). The Mulsanne requires premium, which can cost 20 to 55 cents more per gallon.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Rolls-Royce Phantom higher (3 out of 10) than the Bentley Mulsanne (1). This means the Phantom produces up to 22.5 pounds less smog-producing pollutants than the Mulsanne every 15,000 miles.
For better traction, the Phantom’s tires are larger than the largest tires available on the Mulsanne (285/45R21 vs. 265/45R20).
For better ride, handling and brake cooling the Phantom has standard 21-inch wheels. Smaller 20-inch wheels are standard on the Mulsanne. The Phantom’s optional 22-inch wheels are larger than the 21-inch wheels optional on the Mulsanne.
Having a flat tire is dangerous, inconvenient and expensive. The self-sealing tires available on the Phantom can automatically seal most punctures up to 3/16 of an inch, effectively preventing most flat tires. The Mulsanne doesn’t offer self-sealing tires.
The Phantom has active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The Mulsanne doesn’t offer an active sway bar system.
The Phantom offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Bentley doesn’t offer an active suspension on the Mulsanne.
For a smoother ride and more stable handling, the Phantom’s wheelbase is longer than on the Mulsanne:
The Rolls-Royce Phantom may be more efficient, handle and accelerate better because it weighs about 250 to 300 pounds less than the Bentley Mulsanne.
The Phantom has 10 cubic feet more passenger volume than the Mulsanne (116 vs. 106).
The Phantom has a much larger trunk than the Mulsanne (19 vs. 15.6 cubic feet).
Heated windshield washer nozzles are standard on the Phantom to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Mulsanne doesn’t offer heated windshield washer nozzles.
The Phantom has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel costs extra on the Mulsanne.
Standard Rolls-Royce Connect for the Phantom allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, searching the internet and other connected activities without taking their eyes off the road or their hands from the wheel. The Mulsanne doesn’t offer factory integrated smartphone program access.
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