2020 Mercedes AMG S-Class Cabriolet vs. 2019 Audi S5

Detailed Review, Specifications & Comparison

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Safety

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An active infrared night vision system optional on the AMG S-Class Cabriolet 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 and even aims one of the vehicle’s headlights in the direction of the person or object. The S5 doesn’t offer a night vision system.

The AMG S-Class Cabriolet’s 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 S5 doesn’t offer a driver alert monitor.

Both the AMG S-Class Cabriolet and the S5 have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights and rearview cameras.

The Mercedes AMG S-Class Cabriolet weighs 677 to 1041 pounds more than the Audi S5. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

Warranty

© 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 2020/02/26

There are over 26 percent more Mercedes dealers than there are Audi dealers, which makes it easier should you ever need service under the AMG S-Class Cabriolet’s warranty.

Reliability

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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 Audi vehicles. J.D. Power ranks Mercedes 12th in initial quality. With 12 more problems per 100 vehicles, Audi is ranked 22nd.

Engine

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The AMG S-Class Cabriolet’s 4.0 turbo V8 produces 254 more horsepower (603 vs. 349) and 295 lbs.-ft. more torque (664 vs. 369) than the S5’s 3.0 turbo V6.

As tested in Car and Driver the Mercedes AMG S 63 Cabriolet is faster than the Audi S5:

AMG S-Class

S5

Zero to 60 MPH

3.7 sec

4.3 sec

Zero to 100 MPH

8.7 sec

10.9 sec

5 to 60 MPH Rolling Start

4.5 sec

5.6 sec

Passing 30 to 50 MPH

2.5 sec

2.8 sec

Passing 50 to 70 MPH

2.7 sec

3.5 sec

Quarter Mile

12.1 sec

12.9 sec

Speed in 1/4 Mile

117 MPH

107 MPH

Top Speed

186 MPH

155 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 2020/02/26

An engine control system that can shut down some of the engine’s cylinders helps improve the AMG S-Class Cabriolet’s fuel efficiency. The S5 doesn’t offer a system that can shut down part of the engine.

The AMG S-Class Cabriolet has 5.8 gallons more fuel capacity than the S5 (21.1 vs. 15.3 gallons), for longer range between fill-ups.

Transmission

© 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 2020/02/26

A nine-speed automatic is standard on the Mercedes AMG S-Class Cabriolet, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the S5.

The AMG S-Class Cabriolet’s launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The S5 doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the AMG S-Class Cabriolet’s brake rotors are larger than those on the S5:

AMG S-Class

AMG S-Class opt.

S5

Front Rotors

15.4 inches

16.5 inches

13.8 inches

Rear Rotors

14.2 inches

14.2 inches

13 inches

The AMG S-Class Cabriolet 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 S5 doesn’t offer ceramic brake rotors.

Tires and Wheels

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For better traction, the AMG S-Class Cabriolet has larger tires than the S5 (F:255/40R20 & R:285/35R20 vs. 245/40R18).

The AMG S-Class Cabriolet’s 285/35R20 rear tires provide better handling because they have a lower 35 series profile (height to width ratio) that provides a stiffer sidewall than the S5’s standard 40 series tires.

For better ride, handling and brake cooling the AMG S-Class Cabriolet has standard 20-inch wheels. Smaller 18-inch wheels are standard on the S5.

Suspension and Handling

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The front and rear suspension of the AMG S-Class Cabriolet uses air springs for a smoother, controlled ride than the S5, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The AMG S-Class Cabriolet has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The AMG S-Class Cabriolet’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 S5 doesn’t offer a load leveling suspension.

The AMG S-Class Cabriolet’s 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 S5 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG S-Class Cabriolet’s wheelbase is 7 inches longer than on the S5 Cabriolet (115.9 inches vs. 108.9 inches).

For better handling and stability, the track (width between the wheels) on the AMG S-Class Cabriolet is 2.2 inches wider in the front and 3 inches wider in the rear than on the S5.

The AMG S-Class Cabriolet’s front to rear weight distribution is more even (53.2% to 46.8%) than the S5’s (56.7% to 43.3%). This gives the AMG S-Class Cabriolet more stable handling and braking.

Cargo Capacity

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The AMG S-Class Cabriolet has a much larger trunk with its top up than the S5 Cabriolet with its top up (12.4 vs. 9.3 cubic feet).

To make loading and unloading groceries and cargo easier, especially for short adults, the AMG S-Class Cabriolet has a standard power trunk, which opens and closes automatically by pressing a button or just by kicking your foot under the back bumper, completely leaving your hands free. The S5 doesn’t offer a power trunk, so its trunk has to be closed manually.

Servicing Ease

© 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 2020/02/26

J.D. Power and Associates surveys of service recipients show that Mercedes service is better than Audi. J.D. Power ranks Mercedes fifth in service department satisfaction. With a 13% lower rating, Audi is ranked 8th.

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 2020/02/26

The AMG S-Class Cabriolet has a standard remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The S5 doesn’t offer a remote starting system.

Unlike the driver-only memory system optional at extra cost in the S5, the AMG S-Class Cabriolet 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.

The AMG S-Class Cabriolet’s standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The S5 doesn’t offer an easy entry system.

The AMG S-Class Cabriolet’s standard power windows have a locking feature to keep children in the rear seat from operating them, but the driver can still raise and lower all of them with the lock engaged. Audi does not offer a locking feature on the S5’s standard power windows.

In case of a sudden change of weather, the AMG S-Class Cabriolet has a standard remote convertible top that can be raised from a distance to protect the interior of the vehicle from damage. The S5 doesn’t offer a remote top, so the driver will have to run to the car, get in, turn the ignition on and raise the top to prevent the interior from being damaged.

The AMG S-Class Cabriolet’s 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 S5’s cruise control switches are unlit, making them difficult to find at night and operate safely.

Heated windshield washer fluid is standard on the AMG S-Class Cabriolet to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The S5 doesn’t offer heated windshield washer fluid. Its standard heated washer nozzles will defrost the washer fluid but not the windshield.

To help drivers avoid possible obstacles, the AMG S-Class Cabriolet has standard cornering lights to illuminate around corners when the turn signals are activated. The S5 doesn’t offer cornering lights. The AMG S-Class Cabriolet also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

A power rear sunshade is standard in the AMG S-Class Cabriolet to help block heat and glare for the rear passengers. The S5 doesn’t offer a rear sunshade.

Both the AMG S-Class Cabriolet and the S5 have standard heated front seats. The AMG S-Class Cabriolet also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the S5.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes AMG S-Class has a standard wireless phone charging system (Qi) in the center console. Only the S5 Premium Plus/Prestige offers wireless charging.

The AMG S-Class Cabriolet 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 S5 doesn’t offer a house-current electrical outlet.

The AMG S-Class Cabriolet’s Active Parking Assist can parallel park or back into a parking spot by itself, starting, stopping and changing direction automatically. The S5 Prestige’s automatic parking system requires operating the brakes and transmission to safely park.

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