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The Dawn’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The GranTurismo Convertible doesn’t offer pre-crash pretensioners.
The Dawn has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The GranTurismo Convertible doesn’t offer a whiplash protection system.
The Dawn has standard PostCrash, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The GranTurismo Convertible 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 optional on the Dawn 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. The GranTurismo Convertible doesn’t offer a night vision system.
The Dawn’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The GranTurismo Convertible doesn’t offer a lane departure warning system.
The Dawn has a standard Top-View Camera to allow the driver to see objects all around the vehicle on a screen. The GranTurismo Convertible only offers front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The Dawn’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 GranTurismo Convertible doesn’t offer a driver alert monitor.
The Dawn has standard Rolls Royce Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, 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 GranTurismo Convertible 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 Dawn and the GranTurismo Convertible have standard driver and passenger frontal airbags, front side-impact airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and front and rear parking sensors.
The Rolls-Royce Dawn weighs 838 pounds more than the Maserati GranTurismo Convertible. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
The Dawn comes with a full 4-year/unlimited-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The GranTurismo Convertible’s 4-year/50,000-mile basic warranty expires sooner.
The Dawn’s 4 year corrosion warranty has no mileage limitations, but the corrosion warranty on the GranTurismo Convertible runs out after 50,000 miles.
Rolls-Royce pays for scheduled maintenance on the Dawn for 4 years and unlimited miles. Rolls-Royce will pay for oil changes, lubrication and any other required maintenance. Maserati doesn’t pay scheduled maintenance for the GranTurismo Convertible.
To reliably power the ignition and other systems and to recharge the battery, the Dawn has a standard 220-amp alternator. The GranTurismo Convertible’s 150-amp alternator isn’t as powerful.
The Dawn’s standard 6.6 turbo V12 produces 109 more horsepower (563 vs. 454) and 221 lbs.-ft. more torque (605 vs. 384) than the GranTurismo Convertible’s 4.7 DOHC V8. The Dawn Black Label’s standard 6.6 turbo V12 produces 139 more horsepower (593 vs. 454) and 236 lbs.-ft. more torque (620 vs. 384) than the GranTurismo Convertible’s 4.7 DOHC V8.
The Dawn has 2.1 gallons more fuel capacity than the GranTurismo Convertible (21.9 vs. 19.8 gallons), for longer range between fill-ups.
An eight-speed automatic is standard on the Rolls-Royce Dawn, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the GranTurismo Convertible.
For better stopping power the Dawn’s brake rotors are larger than those on the GranTurismo Convertible:
For better traction, the Dawn has larger front tires than the GranTurismo Convertible (F:255/45R20 & R:285/40R20 vs. F:245/35R20 & R:285/35R20).
For better ride, handling and brake cooling the Dawn offers optional 21-inch wheels. The GranTurismo Convertible’s largest wheels are only 20-inches.
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the Dawn can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The GranTurismo Convertible doesn’t offer run-flat tires.
The Dawn 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 GranTurismo Convertible doesn’t offer an active sway bar system.
The front and rear suspension of the Dawn uses air springs for a smoother, controlled ride than the GranTurismo Convertible, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.
The Dawn offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Maserati doesn’t offer an active suspension on the GranTurismo Convertible.
The Dawn has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The GranTurismo Convertible doesn’t offer a load leveling suspension.
For a smoother ride and more stable handling, the Dawn’s wheelbase is 6.7 inches longer than on the GranTurismo Convertible (122.5 inches vs. 115.8 inches).
For better handling and stability, the track (width between the wheels) on the Dawn is 2.6 inches wider in the front and 2.4 inches wider in the rear than on the GranTurismo Convertible.
Because it has more passenger and cargo room, the EPA rates the Dawn a Compact car, while the GranTurismo Convertible is rated a Subcompact.
The Dawn has 15 cubic feet more passenger volume than the GranTurismo Convertible (100 vs. 85).
The Dawn has .4 inches more front headroom, 4.8 inches more front shoulder room, 1.2 inches more rear headroom and 5.8 inches more rear shoulder room than the GranTurismo Convertible.
The Dawn has a much larger trunk with its top down the GranTurismo Convertible (8.6 vs. 6.1 cubic feet).
With its convertible body style, valet key and remote trunk release lockout, the Dawn offers cargo security. The GranTurismo Convertible’s non-lockable remote release defeats cargo security.
To make loading and unloading groceries and cargo easier when your hands are full, the Dawn’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The GranTurismo Convertible doesn’t offer a power or hands-free opening trunk.
Unlike the driver-only memory system in the GranTurismo Convertible, the Dawn has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.
The Dawn offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The GranTurismo Convertible doesn’t offer a heads-up display.
The Dawn’s standard power windows have a locking feature to keep children in the rear seat from operating them. Maserati does not offer a locking feature on the GranTurismo Convertible’s standard power windows.
The Dawn’s front and rear power windows all lower with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside of the car. The GranTurismo Convertible’s rear power window switches have to be held the entire time to open them fully.
If the windows are left open on the Dawn the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can also lower the windows the same way. The driver of the GranTurismo Convertible can’t use the remote to operate the windows.
Comfort Entry System standard on the Dawn allows you to unlock the driver’s door, trunk and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Maserati GranTurismo Convertible doesn’t offer an advanced key system.
Heated windshield washer nozzles are standard on the Dawn to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The GranTurismo Convertible doesn’t offer heated windshield washer nozzles.
While driving with high beams on, sensitive light sensors available for the Dawn detect other vehicles which could be blinded and automatically switch to low beams. The GranTurismo Convertible doesn’t offer automatic dimming high beams.
Both the Dawn and the GranTurismo Convertible have standard heated front seats. The Dawn also has standard heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the GranTurismo Convertible.
Optional air-conditioned seats in the Dawn keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The GranTurismo Convertible doesn’t offer air-conditioned seats.
To keep a safe, consistent following distance, the Dawn offers an optional Active Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The GranTurismo Convertible doesn’t offer an adaptive cruise control.
The Dawn’s standard steering wheel mounted cruise control is close at hand. The GranTurismo Convertible’s standard cruise control is on an over-crowded turn signal stalk.
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