2020 Mercedes S-Class vs. 2020 Genesis G80

Detailed Review, Specifications & Comparison

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Safety

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For enhanced safety, the front and rear seat shoulder belts of the Mercedes S-Class have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Genesis G80 doesn’t offer pretensioners for the rear seat belts.

The rear seatbelts optional on the S-Class inflate when a collision is detected, helping to spread crash forces over a much larger area of the body and limiting head and neck movement. This can help prevent spinal and internal injuries. The G80 doesn’t offer inflatable seatbelts.

An active infrared night vision system optional on the S-Class helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard. The G80 doesn’t offer a night vision system.

Both the S-Class and the G80 have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver knee airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras, driver alert monitors, available all wheel drive, around view monitors and rear cross-path warning.

Warranty

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There are over 19 percent more Mercedes dealers than there are Genesis dealers, which makes it easier should you ever need service under the S-Class’ warranty.

Engine

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The S-Class has more powerful engines than the G80:

Horsepower

Torque

S 450 3.0 turbo V6

362 HP

369 lbs.-ft.

S 560 4.0 turbo V8

463 HP

516 lbs.-ft.

Maybach S 650 6.0 turbo V12

621 HP

738 lbs.-ft.

G80 3.8 DOHC V6

311 HP

293 lbs.-ft.

G80 3.3T Sport 3.3 turbo V6

365 HP

376 lbs.-ft.

G80 5.0 DOHC V8

420 HP

383 lbs.-ft.

As tested in Car and Driver the S 560 is faster than the Genesis G80:

S-Class

G80 3.3T Sport

G80 5.0

Zero to 60 MPH

4.9 sec

5 sec

5 sec

Zero to 100 MPH

11.5 sec

12.5 sec

12.3 sec

5 to 60 MPH Rolling Start

5.2 sec

5.7 sec

5.6 sec

Quarter Mile

13.4 sec

13.6 sec

13.6 sec

Speed in 1/4 Mile

108 MPH

104 MPH

105 MPH

Fuel Economy and Range

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On the EPA test cycle the S-Class Sedan gets better fuel mileage than the G80:

MPG

S-Class Sedan

RWD

450 3.0 turbo V6

19 city/28 hwy

560 4.0 turbo V8

17 city/27 hwy

AWD

450 3.0 turbo V6

18 city/28 hwy

560 4.0 turbo V8

17 city/27 hwy

Maybach 560 4.0 turbo V8

16 city/25 hwy

G80

RWD

3.8 DOHC V6

18 city/26 hwy

3.3 turbo V6

17 city/25 hwy

5.0 DOHC V8

16 city/24 hwy

AWD

3.8 DOHC V6

18 city/24 hwy

3.3 turbo V6

17 city/24 hwy

5.0 DOHC V8

15 city/23 hwy

An engine control system that can shut down some of the engine’s cylinders helps improve the S-Class 560’s fuel efficiency. The G80 doesn’t offer a system that can shut down part of the engine.

In heavy traffic or at stoplights the S-Class’ 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 G80 doesn’t offer an automatic engine start/stop system.

The S-Class V12’s standard fuel tank has 4.3 gallons more fuel capacity than the G80 (24.6 vs. 20.3 gallons).

Transmission

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A nine-speed automatic is available on the Mercedes S-Class, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the G80.

Brakes and Stopping

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For better stopping power the S-Class’ brake rotors are larger than those on the G80:

S 450/560

S 650

G80 3.8

G80 3.3T Sport

Front Rotors

14.6 inches

15.4 inches

13.6 inches

14.2 inches

Rear Rotors

14.2 inches

14.2 inches

12.4 inches

13 inches

The S-Class’ standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the G80 3.8 are solid, not vented.

The S-Class stops shorter than the G80:

S-Class

G80

70 to 0 MPH

171 feet

180 feet

Car and Driver

60 to 0 MPH

114 feet

116 feet

Motor Trend

Tires and Wheels

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For better ride, handling and brake cooling the S-Class offers optional 20-inch wheels. The G80’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the S-Class can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The G80 doesn’t offer run-flat tires.

Suspension and Handling

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The front and rear suspension of the S-Class uses air springs for a smoother, controlled ride than the G80, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The S-Class offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Genesis doesn’t offer an active suspension on the G80.

The S-Class has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The G80 doesn’t offer a load leveling suspension.

The S-Class’ 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 G80 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the S-Class’ wheelbase is 6.1 inches longer than on the G80 (124.6 inches vs. 118.5 inches). The Maybach S-Class’ wheelbase is 14 inches longer than on the G80 (132.5 inches vs. 118.5 inches).

The S 600 handles at .90 G’s, while the G80 3.8 AWD pulls only .86 G’s of cornering force in a Motor Trend skidpad test.

The S 600 executes Motor Trend’s “Figure Eight” maneuver quicker than the G80 5.0 (25.8 seconds @ .75 average G’s vs. 26.7 seconds @ .7 average G’s).

Chassis

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As tested by Car and Driver while cruising at 70 MPH, the interior of the S 560 is quieter than the G80 5.0 (67 vs. 70 dB).

Passenger Space

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The S-Class has 4.3 cubic feet more passenger volume than the G80 (112 vs. 107.7).

The S-Class has 1.4 inches more front shoulder room and 2 inches more rear shoulder room than the G80.

For enhanced passenger comfort on long trips the S-Class’ available rear seats recline. The G80’s rear seats don’t recline.

Cargo Capacity

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The S-Class has a much larger trunk than the G80 (18.7 vs. 15.3 cubic feet).

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 2020/09/30

Unlike the driver-only memory system in the G80, the S-Class has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

If the windows are left open on the S-Class the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the G80 can only operate the windows from inside the vehicle, with the ignition on.

Heated windshield washer fluid is standard on the S-Class to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The G80 doesn’t offer heated windshield washer fluid.

Consumer Reports rated the S-Class’ headlight performance “Good,” a higher rating than the G80’s headlights, which were rated “Poor.”

Optional air conditioned front and rear seats keep the S-Class’ passengers comfortable and take the sting out of hot leather in summer. The G80 only offers an air-conditioned driver’s seat.

The S-Class offers optional massaging front and rear seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the G80.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes S-Class has a standard wireless phone charging system (Qi) in the center console and one for the rear passengers. Wireless charging costs extra on the G80.

The S-Class 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 G80 doesn’t offer a house-current electrical outlet.

The S-Class’ optional Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The G80 doesn’t offer an automated parking system.

Model Availability

© 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 2020/09/30

The Mercedes S-Class comes in coupe, convertible and sedan bodystyles; the Genesis G80 isn’t available as a coupe or convertible.

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 2020/09/30

The Mercedes S-Class outsold the Genesis G80 by over two to one during the 2019 model year.

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