2019 Mercedes AMG E 63 vs. 2019 Audi S5 Sportback

Detailed Review, Specifications & Comparison

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The middle row seatbelts optional on the AMG E 63 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 S5 Sportback doesn’t offer inflatable seatbelts.

The AMG E 63’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 Sportback doesn’t offer a driver alert monitor.

Both the AMG E 63 and the S5 Sportback 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 and available lane departure warning systems.

The Mercedes AMG E 63 weighs 562 to 790 pounds more than the Audi S5 Sportback. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.


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 E 63’s warranty.


To reliably power the ignition and other systems and to recharge the battery, the AMG E 63 has a standard 180-amp alternator. The S5 Sportback’s standard 110-amp alternator and largest (optional) 150-amp alternator aren’t as powerful.

To reliably start during all conditions and help handle large electrical loads, the AMG E 63 has a standard 850-amp battery. The S5 Sportback’s 420-amp battery isn’t as powerful.

J.D. Power and Associates’ 2018 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 15th in initial quality, above the industry average. With 13 more problems per 100 vehicles, Audi is ranked 25th, below the industry average.


The AMG E 63’s 4.0 turbo V8 produces 254 more horsepower (603 vs. 349) and 258 lbs.-ft. more torque (627 vs. 369) than the S5 Sportback’s 3.0 turbo V6.

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

AMG E 63

S5 Sportback

Zero to 30 MPH

1.1 sec

1.6 sec

Zero to 60 MPH

2.9 sec

4.3 sec

Zero to 100 MPH

6.7 sec

10.9 sec

5 to 60 MPH Rolling Start

3.8 sec

5.8 sec

Passing 30 to 50 MPH

2.3 sec

3.4 sec

Passing 50 to 70 MPH

2.5 sec

3.5 sec

Quarter Mile

11 sec

12.9 sec

Speed in 1/4 Mile

128 MPH

108 MPH

Fuel Economy and Range

An engine control system that can shut down half of the engine’s cylinders helps improve the AMG E 63’s fuel efficiency. The S5 Sportback doesn’t offer a system that can shut down part of the engine.

The AMG E 63 has 5.8 gallons more fuel capacity than the S5 Sportback (21.1 vs. 15.3 gallons), for longer range between fill-ups.


A nine-speed automatic is standard on the Mercedes AMG E 63, for better acceleration and lower engine speed on the highway. Only an eight-speed automatic is available for the S5 Sportback.

The AMG E 63’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 Sportback doesn’t offer launch control.

Brakes and Stopping

For better stopping power the AMG E 63’s brake rotors are larger than those on the S5 Sportback:

AMG E 63

AMG E 63

S5 Sportback

Front Rotors

15.4 inches

15.8 inches

13.8 inches

Rear Rotors

14.2 inches

14.2 inches

13 inches

The AMG E 63 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 Sportback doesn’t offer ceramic brake rotors.

The AMG E 63 stops shorter than the S5 Sportback:

AMG E 63

S5 Sportback

70 to 0 MPH

153 feet

158 feet

Car and Driver

Tires and Wheels

For better traction, the AMG E 63 has larger tires than the S5 Sportback (F:265/35R20 & R:295/30R20 vs. 245/40R18).

The AMG E 63’s 265/35R20 front and 295/30R20 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the S5 Sportback’s standard 40 series tires.

For better ride, handling and brake cooling the AMG E 63 has standard 20-inch wheels. Smaller 18-inch wheels are standard on the S5 Sportback.

Suspension and Handling

The front and rear suspension of the AMG E 63 uses air springs for a smoother, controlled ride than the S5 Sportback, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The AMG E 63 has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The AMG E 63’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 Sportback doesn’t offer a load leveling suspension.

The AMG E 63’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 Sportback doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the AMG E 63’s wheelbase is 4.5 inches longer than on the S5 Sportback (115.7 inches vs. 111.2 inches).

For better handling and stability, the track (width between the wheels) on the AMG E 63 is 2.4 inches wider in the front and 1.1 inches wider in the rear than on the S5 Sportback.

The AMG E 63 S Sedan handles at 1.01 G’s, while the S5 Sportback Prestige pulls only .95 G’s of cornering force in a Car and Driver skidpad test.


As tested by Car and Driver while cruising at 70 MPH, the interior of the AMG E 63 S Sedan is quieter than the S5 Sportback Prestige (66 vs. 70 dB).

Passenger Space

The AMG E 63 Wagon has standard seating for 7 passengers; the S5 Sportback can only carry 5.

The AMG E 63 Sedan has .1 inches more front legroom, 2.1 inches more front shoulder room, 1.2 inches more rear headroom, 1.1 inches more rear legroom and 2.6 inches more rear shoulder room than the S5 Sportback.

Cargo Capacity

The AMG E 63 Wagon’s cargo area provides more volume than the S5 Sportback.

AMG E 63

S5 Sportback

Third Seat Folded

35 cubic feet


Third Seat Removed


21.8 cubic feet

Second Seat Folded

64 cubic feet

35 cubic feet

With its sedan body style, valet key, locking rear seatbacks and remote trunk release in the glovebox, the AMG E 63 offers cargo security. The S5 Sportback’s defeats cargo security.

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 E 63 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 Sportback doesn’t offer a remote starting system.

Unlike the driver-only memory system optional at extra cost in the S5 Sportback, the AMG E 63 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 E 63’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. The S5 Sportback doesn’t offer an easy entry system.

To help drivers see further while navigating curves, the AMG E 63 offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The S5 Sportback doesn’t offer cornering lights.

A power rear sunshade is optional in the AMG E 63 Sedan to help block heat and glare for the rear passengers. The S5 Sportback doesn’t offer a rear sunshade.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Mercedes AMG E 63 has a standard wireless phone charging system (Qi) in the center console. Only the S5 Sportback Premium Plus/Prestige offers wireless charging.

The AMG E 63 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 S5 Sportback doesn’t offer a house-current electrical outlet.

The AMG E 63’s Active Parking Assist can parallel park by itself, stopping and changing direction automatically. The S5 Sportback Prestige’s automatic parking system requires operating the brakes and transmission to safely park.

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

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