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The E-Class Coupe’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The GranTurismo doesn’t offer pre-crash pretensioners.
The E-Class Coupe has standard Active Brake Assist, which use 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 GranTurismo doesn't offer collision warning or crash mitigation brakes.
The E-Class Coupe offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The GranTurismo doesn’t offer all-wheel drive.
The E-Class Coupe’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The GranTurismo doesn’t offer a lane departure warning system.
The E-Class Coupe offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The GranTurismo only offers front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The E-Class Coupe’s optional blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. The GranTurismo doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing safer, the E-Class Coupe’s optional 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 GranTurismo doesn’t offer a cross-path warning system.
The E-Class Coupe’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 doesn’t offer a driver alert monitor.
The E-Class Coupe has standard Mercedes-Benz Emergency Call, 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 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 E-Class Coupe and the GranTurismo have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and daytime running lights.
The E-Class Coupe’s corrosion warranty is 1 year and unlimited miles longer than the GranTurismo’s (5/unlimited vs. 4/50,000).
There are over 3 times as many Mercedes dealers as there are Maserati dealers, which makes it much easier should you ever need service under the E-Class Coupe’s warranty.
To reliably power the ignition and other systems and to recharge the battery, the E-Class Coupe has a standard 180-amp alternator. The GranTurismo’s 150-amp alternator isn’t as powerful.
On the EPA test cycle the E 450 Coupe RWD gets better fuel mileage than the GranTurismo Auto (20 city/28 hwy vs. 13 city/21 hwy).
In heavy traffic or at stoplights the E-Class Coupe’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The GranTurismo doesn’t offer an automatic engine start/stop system.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes E-Class Coupe higher (5 out of 10) than the Maserati GranTurismo (1). This means the E-Class Coupe produces up to 39 pounds less smog-producing pollutants than the GranTurismo every 15,000 miles.
A nine-speed automatic is standard on the Mercedes E-Class Coupe, for better acceleration and lower engine speed on the highway. Only a six-speed automatic is available for the GranTurismo.
All wheel drive, available in the E-Class Coupe, provides the best traction for acceleration in wet, dry, and icy conditions. In corners, all wheel drive allows both outside wheels to provide power, balancing the car. This allows for better handling. The Maserati GranTurismo is not available with all wheel drive.
For better stopping power the AMG E 53 Coupe’s brake rotors are larger than those on the GranTurismo:
AMG E 53
Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the E-Class Coupe can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The GranTurismo doesn’t offer run-flat tires.
The E-Class Coupe’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The GranTurismo doesn’t offer drift compensation steering.
The E 450 Coupe 4MATIC handles at .90 G’s, while the GranTurismo pulls only .89 G’s of cornering force in a Car and Driver skidpad test.
The E-Class Coupe is 3.3 inches shorter than the GranTurismo, making the E-Class Coupe easier to handle, maneuver and park in tight spaces.
The E-Class Coupe has standard seating for 5 passengers; the GranTurismo can only carry 4.
The E-Class Coupe has 3 cubic feet more passenger volume than the GranTurismo (89 vs. 86).
The E-Class Coupe has .7 inches more front headroom, .1 inches more front legroom, 1.9 inches more front shoulder room, 2.1 inches more rear headroom and 4 inches more rear legroom than the GranTurismo.
The E-Class Coupe has a much larger trunk than the GranTurismo (10 vs. 6.1 cubic feet).
The E-Class Coupe’s standard rear seats fold to accommodate long and bulky cargo. The GranTurismo doesn’t offer folding rear seats.
With its coupe body style, valet key, locking rear seatbacks and remote trunk release lockout, the E-Class offers cargo security. The GranTurismo’s non-lockable remote release defeats cargo security.
To make loading and unloading groceries and cargo easier when your hands are full, the E-Class Coupe’s power trunk can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The GranTurismo doesn’t offer a power or hands-free opening trunk.
The E-Class Coupe has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The GranTurismo doesn’t offer a remote starting system.
Unlike the driver-only memory system in the GranTurismo, the E-Class Coupe has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.
The E-Class Coupe offers an optional heads-up display that projects speed and navigation instruction readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The GranTurismo doesn’t offer a heads-up display.
The E-Class Coupe’s front and rear power windows all open or close 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’s passenger windows don’t close automatically.
If the windows are left open on the E-Class Coupe 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 lower the windows from a distance using the keyless remote. The driver of the GranTurismo can only operate the windows from inside the vehicle, with the ignition on.
Keyless-Start standard on the E-Class Coupe allows you to start the engine without removing a key from pocket or purse. The Maserati GranTurismo doesn’t offer an advanced key system.
While driving with high beams on, sensitive light sensors available for the E-Class Coupe detect other vehicles which could be blinded and automatically switch to low beams. The GranTurismo doesn’t offer automatic dimming high beams.
To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the E-Class Coupe has standard extendable sun visors. The GranTurismo doesn’t offer extendable visors.
A power rear sunshade is optional in the E-Class Coupe to help block heat and glare for the rear passengers. The GranTurismo doesn’t offer a rear sunshade.
Optional air-conditioned seats in the E-Class Coupe keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The GranTurismo doesn’t offer air-conditioned seats.
On extremely cold winter days, the E-Class Coupe’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The GranTurismo doesn’t offer a heated steering wheel.
To keep a safe, consistent following distance, the E-Class Coupe offers an optional Distronic Plus, 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 doesn’t offer an adaptive cruise control.
The E-Class Coupe’s standard steering wheel mounted cruise control is close at hand. The GranTurismo’s standard cruise control is on an over-crowded turn signal stalk.
The E-Class Coupe offers an optional 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The GranTurismo doesn’t offer a house-current electrical outlet.
The E-Class Coupe’s optional Active Parking Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The GranTurismo doesn’t offer an automated parking system.
The Mercedes E-Class comes in coupe, convertible, sedan and station wagon bodystyles; the Maserati GranTurismo isn’t available as a sedan or station wagon.
The E-Class was chosen as one of Car and Driver’s “Top Ten” in 2018. The GranTurismo has never been a Car and Driver “Top Ten” pick.
The Mercedes E-Class outsold the Maserati GranTurismo by almost 49 to one during 2017.
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