2020 Bentley Bentayga vs. 2019 Mercedes GLS

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/29

Both the Bentayga and GLS have child safety locks to prevent children from opening the rear doors. The Bentayga has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The GLS’ child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

To help make backing safer, the Bentayga’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 GLS doesn’t offer a cross-path warning system.

Both the Bentayga and the GLS have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, night vision systems, lane departure warning systems and around view monitors.

Warranty

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The Bentayga comes with a full 3-year/unlimited-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The GLS’ 50,000-mile basic warranty expires sooner.

Engine

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The Bentayga has more powerful engines than the GLS:

Horsepower

Torque

Bentayga 4.0 turbo V8

542 HP

568 lbs.-ft.

Bentayga W12 6.0 turbo 12 cyl.

600 HP

664 lbs.-ft.

Bentayga SPEED 6.0 turbo 12 cyl.

626 HP

664 lbs.-ft.

GLS 450 3.0 turbo V6

362 HP

369 lbs.-ft.

GLS 550 4.7 turbo V8

449 HP

516 lbs.-ft.

AMG GLS 63 5.5 turbo V8

577 HP

561 lbs.-ft.

As tested in Motor Trend the Bentayga W12 6.0 turbo 12 cyl. is faster than the GLS 550 4.7 turbo V8:

Bentayga

GLS

Zero to 60 MPH

3.5 sec

5.6 sec

Quarter Mile

11.9 sec

14.2 sec

Speed in 1/4 Mile

117.1 MPH

97.6 MPH

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/29

On the EPA test cycle the Bentayga W12 6.0 twin-turbo 12 cyl. (600 HP) gets better fuel mileage than the AMG GLS 63 5.5 twin-turbo V8 (14 city/20 hwy vs. 13 city/18 hwy).

An engine control system that can shut down half of the engine’s cylinders helps improve the Bentayga’s fuel efficiency. The GLS doesn’t offer a system that can shut down part of the engine.

Brakes and Stopping

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For better stopping power the Bentayga’s brake rotors are larger than those on the GLS:

Bentayga

Bentayga SPEED

GLS 450

AMG GLS 63

Front Rotors

15.7 inches

17.3 inches

13.8 inches

15.4 inches

Rear Rotors

15 inches

14.6 inches

13.6 inches

14.2 inches

The Bentayga offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The GLS doesn’t offer ceramic brake rotors.

The Bentayga stops much shorter than the GLS:

Bentayga

GLS

70 to 0 MPH

181 feet

186 feet

Car and Driver

60 to 0 MPH

114 feet

126 feet

Motor Trend

Tires and Wheels

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The Bentayga’s standard tires provide better handling because they have a lower 50 series profile (height to width ratio) that provides a stiffer sidewall than the GLS’ standard 55 series tires.

For better ride, handling and brake cooling the Bentayga has standard 20-inch wheels. Smaller 19-inch wheels are standard on the GLS.

Suspension and Handling

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The Bentayga offers an available active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Mercedes doesn’t offer an active suspension on the GLS.

For better handling and stability, the track (width between the wheels) on the Bentayga is 1.2 inches wider in the front and .6 inches wider in the rear than the average track on the GLS.

The Bentayga handles at .81 G’s, while the GLS 450 pulls only .74 G’s of cornering force in a Car and Driver skidpad test.

The Bentayga SPEED executes Motor Trend’s “Figure Eight” maneuver 3.5 seconds quicker than the GLS 450 (24.6 seconds @ .79 average G’s vs. 28.1 seconds @ .62 average G’s).

For better maneuverability, the Bentayga SPEED’s turning circle is 1.7 feet tighter than the GLS’ (39 feet vs. 40.7 feet). The Bentayga’s turning circle is .1 feet tighter than the GLS’ (40.6 feet vs. 40.7 feet).

For greater off-road capability the Bentayga has a 1.9 inches greater minimum ground clearance than the AMG GLS 63 (9.7 vs. 7.8 inches), allowing the Bentayga to travel over rougher terrain without being stopped or damaged.

Chassis

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The design of the Bentley Bentayga amounts to more than styling. The Bentayga has an aerodynamic coefficient of drag of .34 Cd. That is lower than the GLS (.37 to .38). A more efficient exterior helps keep the interior quieter and helps the Bentayga get better fuel mileage.

As tested by Car and Driver while cruising at 70 MPH, the interior of the Bentayga is quieter than the GLS 450 (62 vs. 65 dB).

Passenger Space

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The Bentayga has 1.4 inches more front legroom, .2 inches more front shoulder room and 2.4 inches more rear legroom than the GLS.

Flexibility is maximized at the game, campground or a drive-in theatre in the Bentayga when its optional tailgating rear seats are deployed, allowing people to sit facing out of the liftgate. (Do not use while vehicle is in motion.) The GLS doesn’t offer tailgating seats.

Cargo Capacity

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To make loading groceries and cargo easier when your hands are full, the Bentayga’s available liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The GLS doesn’t offer a hands-free gesture to open its liftgate, forcing you to put cargo down if your hands are full.

Towing

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The Bentayga’s standard towing capacity is much higher than the GLS’ (7716 vs. 7500 pounds).

Ergonomics

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/29

The Bentayga 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 GLS doesn’t offer a heads-up display.

Optional air-conditioned the front and second row seats keep the Bentayga’s passengers comfortable and take the sting out of hot leather in summer. The GLS doesn’t offer air-conditioned seats for the second row.

The Bentayga has a standard dual zone air-conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. Dual zone air-conditioning costs extra on the GLS.

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