Compare the2026 Mercedes AMG GT 4-DoorVS 2026 Audi RS 6

The AMG GT 4-Door has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the RS 6’s blind spot costs extra.

To help make backing out of a parking space safer, the AMG GT 4-Door has standard Rear Cross-Traffic Alert and Rear Cross Traffic Brake automatically engages the brakes to help avoid a collision. Audi charges extra for Rear Cross-Traffic Assist on the RS 6.

Both the AMG GT 4-Door and the RS 6 have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front and rear seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, around view monitors, driver alert monitors and available lane departure warning systems.

There are over 25 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’ 2025 Initial Quality Study of new car owners surveyed provide the statistics that show that Mercedes vehicles are better in initial quality than Audi vehicles. With 59 fewer problems per 100 vehicles, JD Power ranks Mercedes higher than Audi.

J.D. Power and Associates’ 2025 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Mercedes vehicles are more reliable than Audi With 30 fewer problems per 100 vehicles in the first three years of ownership, J.D. Power ranks Mercedes higher than Audi.

The AMG GT 63 S E’s standard 4.0 turbo V8 hybrid produces 210 more horsepower (831 vs. 621) and 405 lbs.-ft. more torque (1032 vs. 627) than the RS 6’s 4.0 turbo V8 hybrid.

As tested in Motor Trend the AMG GT 63 S E 4.0 turbo V8 hybrid is faster than the Audi RS 6:

On the EPA test cycle the AMG GT 63 S E running on electricity gets better mileage than the RS 6 Performance Avant (31 city/26 hwy MPGe vs. 14 city/21 hwy).

On the EPA test cycle the AMG GT 4-Door running its gasoline engine gets better mileage than the RS 6:

The AMG GT 63 S E can travel with zero emissions for 1 miles. The RS 6 can’t move without running its internal combustion engine.

The AMG GT 4-Door’s standard fuel tank has 1.8 gallons more fuel capacity than the RS 6 (21.1 vs. 19.3 gallons).

In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Mercedes AMG GT 4-Door higher (4 to 5 out of 10) than the Audi RS 6 (2). This means the AMG GT 4-Door produces up to 20.8 pounds less smog-producing pollutants than the RS 6 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 an eight-speed automatic is available for the RS 6.

The AMG GT 4-Door stops much shorter than the RS 6:

For better traction and acceleration, the AMG GT 4-Door has larger standard rear tires than the RS 6 (285/40R19 vs. 275/35R21). The AMG GT 4-Door’s optional rear tires are larger than the largest rear tires available on the RS 6 (315/30R21 vs. 285/30R22).

The AMG GT 4-Door’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 RS 6 doesn’t offer drift compensation steering.

The AMG GT 4-Door’s front to rear weight distribution is more even (49% to 51%) than the RS 6’s (55% to 45%). This gives the AMG GT 4-Door more stable handling and braking.

The AMG GT 63 S E handles at 1.02 G’s, while the RS 6 Avant pulls only .94 G’s of cornering force in a Car and Driver skidpad test.

The Mercedes AMG GT 4-Door may be more efficient, handle and accelerate better because it weighs up to about 450 pounds less than the Audi RS 6.

To almost totally eliminate engine vibration in the passenger area, the AMG GT 4-Door V8 has an electronically controlled liquid-filled front engine mount. A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The RS 6 uses conventional solid rubber engine mounts.

The AMG GT 4-Door has 2.5 inches more front headroom, .4 inches more front legroom and .7 inches more rear shoulder room than the RS 6.

Heated windshield washer fluid is standard on the AMG GT 4-Door to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The RS 6 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 GT 4-Door has standard cornering lights to illuminate around corners when the turn signals are activated. The RS 6 doesn’t offer cornering lights. The AMG GT 4-Door also has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle.

A manual rear sunshade is optional in the AMG GT 4-Door to help block heat and glare for the rear passengers. The RS 6 doesn’t offer a rear sunshade.

Both the Mercedes AMG GT 4-Door and the Audi RS 6 have a standard Qi wireless phone charging system in the front seat. To easily keep personal devices charged in the rear seat, without cables tangling and wearing out, the AMG GT 4-Door also has a standard wireless charging system in the rear seat. The RS 6 does not.

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 RS 6 doesn’t offer a house-current electrical outlet.