2019 Mercedes AMG GT 4-Door vs. 2018 Audi S7

Detailed Review, Specifications & Comparison

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Over 200 people are killed each year when backed over by motor vehicles. The AMG GT 4-Door has a standard Rear Cross Traffic Brake that use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The S7 doesn’t offer backup collision prevention brakes.

The AMG GT 4-Door offers an optional Surround View System to allow the driver to see objects all around the vehicle on a screen. The S7 only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

To help make backing safer, the AMG GT 4-Door’s 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 S7 doesn’t offer a cross-path warning system.

The AMG GT 4-Door’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 S7 doesn’t offer a driver alert monitor.

Both the AMG GT 4-Door and the S7 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, 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.


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 GT 4-Door’s warranty.


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.


The AMG GT 63’s standard 4.0 turbo V8 produces 127 more horsepower (577 vs. 450) and 184 lbs.-ft. more torque (590 vs. 406) than the S7’s 4.0 turbo V8. The AMG GT 63 S’ standard 4.0 turbo V8 produces 180 more horsepower (630 vs. 450) and 258 lbs.-ft. more torque (664 vs. 406) than the S7’s 4.0 turbo V8.

Fuel Economy and Range

On the EPA test cycle the AMG GT 53 gets better fuel mileage than the S7 (19 city/24 hwy vs. 16 city/24 hwy).

Regenerative brakes improve the AMG GT 4-Door 53’s fuel efficiency by converting inertia back into energy instead of wasting it. The S7 doesn’t offer a regenerative braking system.

Environmental Friendliness

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes AMG GT 4-Door higher (5 to 6 out of 10) than the Audi S7 (3). This means the AMG GT 4-Door produces up to 23.4 pounds less smog-producing pollutants than the S7 every 15,000 miles.


A nine-speed automatic is available on the Mercedes AMG GT 4-Door, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the S7.

Brakes and Stopping

For better stopping power the AMG GT 4-Door’s optional brake rotors are larger than those on the S7:



Front Rotors

15.8 inches

15.4 inches

Rear Rotors

14.2 inches

14 inches

The AMG GT 4-Door 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 S7 doesn’t offer ceramic brake rotors.

Tires and Wheels

For better traction and acceleration, the AMG GT 4-Door has larger standard rear tires than the S7 (285/40R19 vs. 265/35R20). The AMG GT 63 S’ rear tires are larger than the largest rear tires available on the S7 (295/35R20 vs. 275/30R21).

Suspension and Handling

The AMG GT 4-Door’s drift compensation steering can automatically compensate for road conditions that would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The S7 doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG GT 4-Door’s wheelbase is 1.4 inches longer than on the S7 (116.2 inches vs. 114.8 inches).

For better handling and stability, the average track (width between the wheels) on the AMG GT 4-Door is 1.2 inches wider in the front and 1.1 inches wider in the rear than the track on the S7.

Servicing Ease

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.


The AMG GT 4-Door 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 S7 doesn’t offer a remote starting system.

A manual rear sunshade is optional in the AMG GT 4-Door to help block heat and glare for the rear passengers. The S7 doesn’t offer a rear sunshade.

The AMG GT 4-Door 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 S7 doesn’t offer a house-current electrical outlet.

The AMG GT 4-Door’s Active Parking Assist can parallel park by itself, with the driver only controlling speed with the brake pedal. The S7 doesn’t offer an automated parking system.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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