2019 Audi S5 Sportback vs. 2018 Mercedes AMG E 63

Detailed Review, Specifications & Comparison

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The S5 Sportback has standard Secondary Collision Brake Assist, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The AMG E 63 doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

The S5 Sportback Prestige’s lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The AMG E 63 doesn’t offer a lane departure warning system.

Both the S5 Sportback and the AMG E 63 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, rearview cameras, available blind spot warning systems, around view monitors and rear cross-path warning.

For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and its standard front crash prevention system, the Insurance Institute for Highway Safety grants the S5 Sportback the rating of “Top Pick” for 2017, a rating granted to only 139 vehicles tested by the IIHS. The AMG E 63 has not been tested, yet.


The S5 Sportback’s corrosion warranty is 7 years longer than the AMG E 63’s (12 vs. 5 years).


J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Audi vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Audi 13th in reliability, above the industry average. With 6 more problems per 100 vehicles, Mercedes is ranked 15th.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Audi vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Audi 10 places higher in reliability than Mercedes.

Fuel Economy and Range

On the EPA test cycle the S5 Sportback gets better fuel mileage than the AMG E 63 S Sedan (21 city/30 hwy vs. 15 city/22 hwy).

Regenerative brakes improve the S5 Sportback’s fuel efficiency by converting inertia back into energy instead of wasting it. The AMG E 63 doesn’t offer a regenerative braking system.

Tires and Wheels

The S5 Sportback’s optional tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the AMG E 63’s 35 series front tires.

Suspension and Handling

For better maneuverability, the S5 Sportback’s turning circle is 2.6 feet tighter than the AMG E 63 Wagon’s (38.4 feet vs. 41 feet). The S5 Sportback’s turning circle is 2.9 feet tighter than the AMG E 63 Sedan’s (38.4 feet vs. 41.3 feet).


The Audi S5 Sportback may be more efficient, handle and accelerate better because it weighs about 600 to 750 pounds less than the Mercedes AMG E 63.

The S5 Sportback is 9.3 inches shorter than the AMG E 63 Sedan, making the S5 Sportback easier to handle, maneuver and park in tight spaces.

The design of the Audi S5 Sportback amounts to more than styling. The S5 Sportback has an aerodynamic coefficient of drag of .29 Cd. That is lower than the AMG E 63 (.32) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the S5 Sportback get better fuel mileage.

As tested by Car and Driver, the interior of the S5 Sportback Prestige is quieter than the AMG E 63 S Sedan:


S5 Sportback

AMG E 63

At idle

40 dB

42 dB


79 dB

84 dB

70 MPH Cruising

70 dB

73 dB

Cargo Capacity

The S5 Sportback has a much larger trunk with its rear seat up than the AMG E 63 Sedan (21.8 vs. 13.1 cubic feet).

Servicing Ease

J.D. Power and Associates surveys of service recipients show that Audi service is better than Mercedes. J.D. Power ranks Audi third in service department satisfaction. With a 3% lower rating, Mercedes is ranked 6th.


Heated windshield washer nozzles are standard on the S5 Sportback to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The AMG E 63 doesn’t offer heated windshield washer nozzles.

To shield the driver and front passenger’s vision over a larger portion of the windshield and side windows, the S5 Sportback has standard extendable sun visors. The AMG E 63 doesn’t offer extendable visors.

On extremely cold winter days, the S5 Sportback’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The AMG E 63 doesn’t offer a heated steering wheel.

Model Availability

The Audi S5 comes in coupe, convertible and four door hatchback bodystyles; the Mercedes AMG E 63 isn’t available as a coupe or convertible.

Economic Advantages

Insurance will cost less for the S5 Sportback owner. The Complete Car Cost Guide estimates that insurance for the S5 Sportback will cost $2760 to $4145 less than the AMG E 63 over a five-year period.

The S5 Sportback will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the S5 Sportback will retain 51.38% to 51.57% of its original price after five years, while the AMG E 63 only retains 48.19% to 49.83%.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Audi S5 Sportback will be $39454 to $41408 less than for the Mercedes AMG E 63.

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

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