2020 Mercedes GLS vs. 2020 Bentley Bentayga

Detailed Review, Specifications & Comparison

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Safety

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The GLS’ pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Bentayga doesn’t offer pre-crash pretensioners.

The GLS’ 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 Bentayga doesn’t offer a driver alert monitor.

The GLS has standard Mercedes-Benz Emergency Call, which uses a global positioning satellite (GPS) receiver and a cellular system to 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 Bentayga 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 GLS and the Bentayga 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, plastic fuel tanks, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, daytime running lights, blind spot warning systems, rearview cameras and available lane departure warning systems.

Warranty

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The GLS comes with a full 4-year/50,000-mile basic warranty, which covers the entire truck and includes 24-hour roadside assistance. The Bentayga’s 3-year basic warranty expires 1 year sooner.

The GLS’ corrosion warranty is 2 years longer than the Bentayga’s (5 vs. 3 years).

There are over 8 times as many Mercedes dealers as there are Bentley dealers, which makes it much easier should you ever need service under the GLS’ warranty.

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 2020/07/05

On the EPA test cycle the GLS gets better fuel mileage than the Bentayga running its gasoline engine:

MPG

GLS

3.0 turbo 6-cyl. Hybrid

19 city/23 hwy

4.0 turbo V8 Hybrid

16 city/21 hwy

Bentayga

3.0 turbo V6 Hybrid

17 city/21 hwy

4.0 Turbo V8

14 city/23 hwy

6.0 turbo W12

12 city/17 hwy

Regenerative brakes improve the GLS’ fuel efficiency by converting inertia back into energy instead of wasting it. The Bentayga doesn’t offer a regenerative braking system.

The GLS has 4 gallons more fuel capacity than the Bentayga Hybrid’s standard fuel tank (23.8 vs. 19.8 gallons), for longer range between fill-ups. The GLS has 1.3 gallons more fuel capacity than the Bentayga’s standard fuel tank (23.8 vs. 22.5 gallons).

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes GLS higher (6 out of 10) than the Bentley Bentayga (3). This means the GLS produces up to 23.4 pounds less smog-producing pollutants than the Bentayga every 15,000 miles.

Transmission

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A nine-speed automatic is standard on the Mercedes GLS, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the Bentayga.

Brakes and Stopping

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The GLS stops much shorter than the Bentayga:

GLS

Bentayga

70 to 0 MPH

166 feet

195 feet

Car and Driver

60 to 0 MPH

113 feet

119 feet

Motor Trend

Tires and Wheels

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For better ride, handling and brake cooling the GLS offers optional 23-inch wheels. The Bentayga’s largest wheels are only 22-inches.

Suspension and Handling

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The GLS’ 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 Bentayga doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the GLS’ wheelbase is 5.5 inches longer than on the Bentayga (123.4 inches vs. 117.9 inches).

The GLS 580 handles at .90 G’s, while the Bentayga pulls only .78 G’s of cornering force in a Car and Driver skidpad test.

For greater off-road capability the GLS has a greater minimum ground clearance than the Bentayga (10.1 vs. 9.7 inches), allowing the GLS to travel over rougher terrain without being stopped or damaged. The GLS Off-Road Package’s minimum ground clearance is 1.6 inches higher than on the Bentayga (11.3 vs. 9.7 inches).

Chassis

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The design of the Mercedes GLS amounts to more than styling. The GLS has an aerodynamic coefficient of drag of .32 Cd. That is lower than the Bentayga (.34) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the GLS get better fuel mileage.

Passenger Space

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The GLS has .6 inches more front shoulder room, 2.2 inches more rear headroom, 1 inch more rear legroom and .7 inches more rear shoulder room than the Bentayga.

Cargo Capacity

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The GLS’ cargo area provides more volume than the Bentayga.

GLS

Bentayga

Behind Third Seat

17.4 cubic feet

7.6 cubic feet

Third Seat Folded

42.7 cubic feet

n/a

Third Seat Removed

n/a

17.1 cubic feet

Second Seat Folded

84.7 cubic feet

62.6 cubic feet

The GLS’ available rear seats fold to accommodate long and bulky cargo. The Bentayga w/Four Seat Comfort Specification doesn’t offer folding rear seats, only a ski pass-through.

Ergonomics

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The GLS’ power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Bentayga’s cruise control switches are unlit, making them difficult to find at night and operate safely.

The GLS has standard heated front and optional heated second and third row seats, which keep the driver and passengers extremely comfortable in the winter. Bentley doesn’t offer heated seats in the third row of the Bentayga.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes GLS has a standard wireless phone charging system (Qi) in the center console and for the rear passengers. The Bentayga doesn’t offer wireless personal charging.

The GLS has a 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 Bentayga doesn’t offer a house-current electrical outlet.

The GLS’ Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The Bentayga’s automatic parking system requires operating the brakes and transmission to safely park.

Recommendations

© 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 2020/07/05

The Mercedes GLS outsold the Bentley Bentayga by almost 23 to one during 2019.

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