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The Mercedes AMG GT’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Senna doesn’t offer pre-crash pretensioners.
The Mercedes AMG GT has standard head airbag curtains that act as a forgiving barrier between the driver and outboard passenger's upper bodies and the window and pillars. Combined with high-strength steel door beams and lower side airbags this system increases head protection in broadside collisions. The Senna doesn't offer side airbag protection for the head.
The Mercedes AMG GT 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 Senna doesn't offer collision warning or crash mitigation brakes.
The Mercedes AMG GT’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 Senna doesn’t offer a lane departure warning system.
The Mercedes AMG GT’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 Senna doesn’t offer a driver alert monitor.
The Mercedes AMG GT 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 Senna doesn’t offer a GPS response system, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the Mercedes AMG GT and the Senna have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and available blind spot warning systems.
The Mercedes AMG GT weighs 486 to 718 pounds more than the McLaren Senna. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.
The AMG GT comes with a full 4-year/50,000-mile basic warranty, which covers the entire car and includes 24-hour roadside assistance. The Senna’s 3-year basic warranty expires 1 year sooner.
There are over 20 times as many Mercedes dealers as there are McLaren dealers, which makes it much easier should you ever need service under the AMG GT’s warranty.
In heavy traffic or at stoplights the Mercedes AMG GT’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 Senna doesn’t offer an automatic engine start/stop system.
For better stopping power the Mercedes AMG GT C/R’s front brake rotors are larger than those on the Senna:
Mercedes AMG GT C/R
For better traction, the Mercedes AMG GT has larger front standard tires than the Senna (255/35R19 vs. 245/35R19). The Mercedes AMG GT R Coupe’s tires are larger than the largest tires available on the Senna (F:275/35R19 & R:325/30R20 vs. F:245/35R19 & R:315/30R20).
The Mercedes AMG GT’s wheels have 5 lugs for longer wheel bearing life, less chance of rotor warping and greater strength. The McLaren Senna only has 1 wheel lugs per wheel.
For better handling and stability, the average track (width between the wheels) on the Mercedes AMG GT is 1.2 inches wider in the front and 2.1 inches wider in the rear than the track on the Senna.
The Mercedes AMG GT’s front to rear weight distribution is more even (47% to 53%) than the Senna’s (42% to 58%). This gives the Mercedes AMG GT more stable handling and braking.
The Mercedes AMG GT R Coupe handles at 1.14 G’s, while the Senna pulls only 1.12 G’s of cornering force in a Road and Track skidpad test.
For better maneuverability, the Mercedes AMG GT’s turning circle is 4.6 feet tighter than the Senna’s (37.7 feet vs. 42.3 feet).
The Mercedes AMG GT is 7.4 inches shorter than the Senna, making the Mercedes AMG GT easier to handle, maneuver and park in tight spaces.
To almost totally eliminate engine vibration in the passenger area, the Mercedes AMG GT has an electronically controlled liquid-filled main engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The Senna uses conventional solid engine mounts.
As tested by Car and Driver, the interior of the Mercedes AMG GT C Coupe is quieter than the Senna:
The Mercedes AMG GT has 1.9 inches more front headroom and 8.2 inches more front shoulder room than the Senna.
The Mercedes AMG GT Coupe has a much larger trunk than the Senna (10.1 vs. 2.2 cubic feet).
To make loading groceries and cargo easier when your hands are full, the Mercedes AMG GT’s available trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The Senna doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.
The Mercedes AMG GT offers a 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 Senna doesn’t offer a remote starting system.
The Mercedes AMG GT’s standard tilting steering column adjusts to different sized drivers and makes entering and exiting easier. McLaren doesn’t offer tilt steering on the Senna.
To help each driver find a more comfortable driving position, the Mercedes AMG GT has a power telescoping steering wheel. Much better than just a tilt steering wheel or adjustable seat, this allows a short driver to sit further from the steering wheel while maintaining contact with the pedals. The Senna doesn’t offer a telescoping steering wheel.
When three different drivers share the Mercedes AMG GT, the memory system makes it convenient for all three. Each setting activates different, customized memories for the driver and front passenger’s seat positions, steering wheel position and outside mirror angle. The Senna doesn’t offer a memory system.
The Mercedes AMG GT’s standard power window controls are mounted on the armrest for easy access. The Senna’s available power window controls are spread out on the center console where they can’t be seen without the driver completely removing his eyes from the road.
While driving with high beams on, sensitive light sensors standard on the Mercedes AMG GT detect other vehicles which could be blinded and automatically switch to low beams. The Senna doesn’t offer automatic dimming high beams.
To keep a safe, consistent following distance, the Mercedes AMG GT offers an optional Active Distance Assist Distronic, 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 Senna doesn’t offer an adaptive cruise control.
To direct the driver from any location to a given street address with audible turn-by-turn directions, a GPS navigation system is standard on the Mercedes AMG GT. The Mercedes AMG GT’s navigation system also has a real-time traffic update feature that offers alternative routes to automatically bypass traffic problems. (Service not available in all areas.) The Senna doesn’t offer a navigation system.
The Mercedes AMG GT comes in coupe and convertible bodystyles; the McLaren Senna isn’t available as a convertible.
The Mercedes AMG GT was chosen as one of Automobile Magazine’s “All Stars” in 2018. The Senna has never been an “All Star.”
The Mercedes AMG GT outsold the McLaren Senna by over seven to one during the 2019 model year.
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