2019 Bentley Bentayga vs. 2018 Mercedes G-Class

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 2020/02/18

Both the Bentayga and G-Class 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 G-Class’ 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.

The Bentayga offers optional Bentley Safeguard, 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 G-Class doesn't offer collision warning or crash mitigation brakes.

When descending a steep, off-road slope, the Bentayga’s standard Hill Descent Control allows you to creep down safely. The G-Class doesn’t offer Hill Descent Control.

A passive infrared night vision system optional on the Bentayga helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then projects the image on the windshield, near the driver’s line of sight. The G-Class doesn’t offer a night vision system.

The Bentayga’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The G-Class doesn’t offer a lane departure warning system.

The Bentayga offers an optional Top View to allow the driver to see objects all around the vehicle on a screen. The G-Class only offers a rear monitor and front and rear parking sensors that beep. That doesn’t help with obstacles to the sides.

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 G-Class doesn’t offer a cross-path warning system.

For better protection of the passenger compartment, the Bentayga uses safety cell construction with a three-dimensional high-strength frame that surrounds the passenger compartment. It provides extra impact protection and a sturdy mounting location for door hardware and side impact beams. The G-Class uses a body-on-frame design, which has no frame members above the floor of the vehicle.

The Bentayga’s gas tank is mounted inside the frame rails in front of the rear axle to optimally protect the fuel tank in a collision. The Mercedes G-Class’ gas tank is mounted behind the rear axle, where it is more susceptible to rear collisions.

Both the Bentayga and the G-Class have standard driver and passenger frontal 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 and rearview cameras.

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 G-Class’ 50,000-mile basic warranty expires sooner.

Engine

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The Bentayga has more powerful engines than the G-Class:

 

Horsepower

Torque

Bentayga V8 4.0 turbo V8

542 HP

568 lbs.-ft.

Bentayga 6.0 turbo 12 cyl.

600 HP

664 lbs.-ft.

G 550 4.0 turbo V8

416 HP

450 lbs.-ft.

G 63 5.5 turbo V8

563 HP

561 lbs.-ft.

As tested in Car and Driver the Bentley Bentayga W12 is faster than the G 65:

 

Bentayga

G-Class

Zero to 60 MPH

3.5 sec

5.1 sec

Zero to 100 MPH

8.5 sec

12.2 sec

5 to 60 MPH Rolling Start

4 sec

5.6 sec

Quarter Mile

11.9 sec

13.6 sec

Speed in 1/4 Mile

118 MPH

105 MPH

Top Speed

187 MPH

140 MPH

Fuel Economy and Range

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On the EPA test cycle the Bentayga gets better fuel mileage than the G-Class:

 

 

 

MPG

Bentayga

 

 

4.0 turbo V8

14 city/23 hwy

 

 

6.0 turbo W12

14 city/20 hwy

G-Class

 

 

550 4.0 turbo V8

13 city/14 hwy

 

 

AMG 63 5.5 turbo V8

12 city/15 hwy

 

 

AMG 65 6.0 turbo V12

11 city/13 hwy

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

Regardless of its engine, the Bentayga’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The G-Class G 65 doesn’t offer an automatic engine start/stop system.

Transmission

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An eight-speed automatic is standard on the Bentley Bentayga, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the G-Class.

Brakes and Stopping

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

 

Bentayga

G 550

G 550 4x4

Front Rotors

15.7 inches

12.4 inches

15 inches

Rear Rotors

15 inches

10.7 inches

14.6 inches

The Bentayga’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the G 550 are solid, not vented.

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 G-Class doesn’t offer ceramic brake rotors.

The Bentayga stops much shorter than the G-Class:

 

Bentayga

G-Class

 

70 to 0 MPH

181 feet

210 feet

Car and Driver

60 to 0 MPH

119 feet

129 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 G 550’s 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 G 550.

Suspension and Handling

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The Bentley Bentayga’s independent front suspension is much lighter than the Mercedes G-Class’ solid front axle, which allows the Bentayga’s wheels to react more quickly and accurately to the road’s surface, improving both ride and handling.

For superior ride and handling, the Bentley Bentayga has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Mercedes G-Class has a solid rear axle, with a non-independent rear suspension.

The Bentayga has standard front and rear stabilizer bars, which help keep the Bentayga flat and controlled during cornering. The G-Class’ suspension doesn’t offer a rear stabilizer bar.

The Bentayga offers 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 G-Class doesn’t offer an active sway bar system.

The front and rear suspension of the Bentayga uses air springs for a smoother, controlled ride than the G-Class, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

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 G-Class.

The Bentayga has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Bentayga’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The G-Class doesn’t offer a load leveling suspension.

For much better steering response and tighter handling the Bentayga has rack and pinion steering, like Formula race cars, instead of the recirculating-ball type steering of the G-Class.

The Bentayga has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The G-Class doesn’t offer variable-assist power steering.

For a smoother ride and more stable handling, the Bentayga’s wheelbase is 5.7 inches longer than on the G-Class (117.9 inches vs. 112.2 inches).

For better handling and stability, the track (width between the wheels) on the Bentayga is 7.1 inches wider in the front and 7.3 inches wider in the rear than the average track on the G-Class.

The Bentayga handles at .81 G’s, while the G 65 pulls only .58 G’s of cornering force in a Car and Driver skidpad test.

The Bentayga executes Motor Trend’s “Figure Eight” maneuver 3.1 seconds quicker than the G 550 (25.6 seconds @ .74 average G’s vs. 28.7 seconds @ .59 average G’s).

For better maneuverability, the Bentayga’s turning circle is 4 feet tighter than the G-Class’ (40.6 feet vs. 44.6 feet).

For greater off-road capability the Bentayga has a 2 inches greater minimum ground clearance than the G 63 (9.7 vs. 7.7 inches), allowing the Bentayga to travel over rougher terrain without being stopped or damaged.

Chassis

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The Bentley Bentayga may be more efficient, handle and accelerate better because it weighs about 350 to 1450 pounds less than the Mercedes G-Class.

The Bentayga is 7.7 inches shorter in height than the G-Class, making the Bentayga much easier to wash and garage and drive (lower center of gravity).

Unibody construction lowers the Bentayga’s center of gravity significantly without reducing ground clearance. This contributes to better on the road handling and better off-road performance and stability. In addition, unibody construction makes the chassis stiffer, improving handling and reducing squeaks and rattles. The G-Class uses body-on-frame design instead.

The design of the Bentley Bentayga amounts to more than styling. The Bentayga has an aerodynamic coefficient of drag of .34 Cd. That is significantly lower than the G-Class (.54). A more efficient exterior helps keep the interior quieter and helps the Bentayga get better fuel mileage.

For excellent aerodynamics, the Bentayga has standard flush composite headlights. The G-Class has recessed headlights that spoil its aerodynamic shape and create extra drag.

Passenger Space

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The Bentayga offers optional seating for 7 passengers; the G-Class can only carry 5.

For enhanced passenger comfort on long trips the Bentayga’s middle row seats recline. The G-Class’ rear seats don’t recline.

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 G-Class doesn’t offer tailgating seats.

Cargo Capacity

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Pressing a switch automatically lowers or raises the Bentayga’s second row seats, to make changing between cargo and passengers easier. The G-Class doesn’t offer automatic folding seats.

The Bentayga’s liftgate lifts up in one piece, completely out of the way of loading and unloading, while sheltering the cargo loading area. The G-Class’ swing out door blocks loading from the driver’s side.

To make loading and unloading groceries and cargo easier, especially for short adults, the Bentayga has a standard power liftgate, which opens and closes automatically by pressing a button, or optionally by just kicking your foot under the back bumper, completely leaving your hands free. The G-Class doesn’t offer a power cargo door.

Towing

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While the G-Class 4x4/G 65 can only tow 7000, any Bentayga can tow a minimum of 7716 pounds.

Ergonomics

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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 G-Class doesn’t offer a heads-up display.

The Bentayga’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 G-Class’ power windows’ switches have to be held the entire time to close them fully.

Advanced Key System standard on the Bentayga allows you to unlock the doors, cargo door 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 Mercedes G-Class doesn’t offer an advanced key system.

While driving with high beams on, sensitive light sensors standard on the Bentayga detect other vehicles which could be blinded and automatically switch to low beams. The G-Class doesn’t offer automatic dimming high beams.

The G-Class’ cornering lamps activate a lamp on the front corner when the turn signal is activated. The Bentayga’s standard adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

To better shield the driver and front passenger’s vision, the Bentayga offers optional dual-element sun visors that can block glare from two directions simultaneously. The G-Class doesn’t offer secondary sun visors.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the Bentayga has standard extendable sun visors. The G-Class doesn’t offer extendable visors.

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 G-Class doesn’t offer air-conditioned seats in the rear.

The Bentayga has a standard center folding armrest for the middle row passengers. A center armrest helps make middle row passengers more comfortable. The G-Class doesn’t offer a rear seat center armrest.

The Bentayga’s optional Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The G-Class doesn’t offer an automated parking system.

Economic Advantages

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The headlight lenses on the Bentayga are made of plastic to be lighter, more resistant to damage and less expensive to replace than the glass headlight lenses on the G-Class.

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