2020 Mercedes CLS vs. 2020 BMW 8 Series Gran Coupe

Detailed Review, Specifications & Comparison

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Safety

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For enhanced safety, the front seat shoulder belts of the Mercedes CLS are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The BMW 8 Series Gran Coupe doesn’t offer height-adjustable seat belts.

Both the CLS and the 8 Series Gran Coupe have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, driver alert monitors, available all wheel drive, lane departure warning systems, around view monitors and rear cross-path warning.

Warranty

© 1999 - 2019 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 2019/11/21

There are over 10 percent more Mercedes dealers than there are BMW dealers, which makes it easier should you ever need service under the CLS’ warranty.

Reliability

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J.D. Power and Associates rated the CLS first among midsize premium cars in their 2019 Initial Quality Study. The 8 Series Gran Coupe isn’t in the top three in its category.

J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than BMW vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 8 more problems per 100 vehicles, BMW is ranked 20th.

Engine

© 1999 - 2019 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 2019/11/21

The CLS’ 3.0 turbo 6 cyl. hybrid produces 27 more horsepower (362 vs. 335) and 1 lbs.-ft. more torque (369 vs. 368) than the 840i Gran Coupe’s standard 3.0 turbo 6 cyl.

Fuel Economy and Range

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On the EPA test cycle the CLS gets better fuel mileage than the 8 Series Gran Coupe:

MPG

CLS

RWD

2.0 Turbo V6

24 city/31 hwy

AWD

3.0 Turbo V6

23 city/30 hwy

8 Series Gran Coupe

RWD

3.0 Turbo V6

22 city/29 hwy

AWD

3.0 Turbo V6

20 city/27 hwy

The CLS has 3.1 gallons more fuel capacity than the 8 Series Gran Coupe (21.1 vs. 18 gallons), for longer range between fill-ups.

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes CLS higher (6 out of 10) than the BMW 8 Series Gran Coupe (3). This means the CLS produces up to 23.4 pounds less smog-producing pollutants than the 8 Series Gran Coupe every 15,000 miles.

Transmission

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A nine-speed automatic is standard on the Mercedes CLS, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the 8 Series Gran Coupe.

Tires and Wheels

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The CLS’ standard 245/40R19 front and 275/35R19 rear tires provide better handling because they have a lower 40 series front and 35 series rear profile (height to width ratio) that provides a stiffer sidewall than the 840i Gran Coupe’s standard 45 series front and 40 series rear tires.

For better ride, handling and brake cooling the CLS has standard 19-inch wheels. Smaller 18-inch wheels are standard on the 840i Gran Coupe.

Suspension and Handling

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The CLS has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The CLS’ 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 8 Series Gran Coupe doesn’t offer a load leveling suspension.

The CLS’ 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 8 Series Gran Coupe doesn’t offer drift compensation steering.

For better maneuverability, the CLS’ turning circle is 2.3 feet tighter than the 840i Gran Coupe’s (38.1 feet vs. 40.4 feet). The CLS’ turning circle is 3.3 feet tighter than the M850i Gran Coupe’s (38.1 feet vs. 41.4 feet).

Chassis

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The CLS is 3.8 inches shorter than the 840i Gran Coupe, making the CLS easier to handle, maneuver and park in tight spaces.

The design of the Mercedes CLS amounts to more than styling. The CLS has an aerodynamic coefficient of drag of .27 Cd. That is lower than the 8 Series Gran Coupe (.3 to .32) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the CLS get better fuel mileage.

Passenger Space

© 1999 - 2019 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 2019/11/21

The CLS has .6 inches more front shoulder room and 1.9 inches more rear shoulder room than the 8 Series Gran Coupe.

Servicing Ease

© 1999 - 2019 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 2019/11/21

J.D. Power and Associates surveys of service recipients show that Mercedes service is better than BMW. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 23% lower rating, BMW is ranked 11th.

Ergonomics

© 1999 - 2019 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 2019/11/21

The CLS has a standard center folding armrest for the rear passengers. A center armrest helps make rear passengers more comfortable. The 8 Series Gran Coupe doesn’t offer a rear seat center armrest.

The CLS 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 8 Series Gran Coupe doesn’t offer a house-current electrical outlet.

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