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For enhanced safety, the front and rear seat shoulder belts of the Audi S6 have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Alfa Romeo Giulia Quadrifoglio doesn’t offer pretensioners for the rear seat belts.
The S6’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Giulia Quadrifoglio doesn’t offer pre-crash pretensioners.
For enhanced safety, the front seat shoulder belts of the Audi S6 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Alfa Romeo Giulia Quadrifoglio doesn’t offer height-adjustable seat belts.
Both the S6 and Giulia Quadrifoglio have child safety locks to prevent children from opening the rear doors. The S6 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Giulia Quadrifoglio’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.
The S6 has a standard Secondary Collision Brake Assist, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Giulia Quadrifoglio 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 S6 has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Giulia Quadrifoglio doesn’t offer all-wheel drive.
A passive infrared night vision system optional on the S6 Prestige helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The Giulia Quadrifoglio doesn’t offer a night vision system.
The S6 has a standard Top and Corner View Cameras to allow the driver to see objects all around the vehicle on a screen. The Giulia Quadrifoglio 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.
Both the S6 and the Giulia Quadrifoglio have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights, rearview cameras, available blind spot warning systems and rear cross-path warning.
The Audi S6 weighs 666 pounds more than the Alfa Romeo Giulia Quadrifoglio. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.
The S6’s corrosion warranty is 8 years longer than the Giulia Quadrifoglio’s (12 vs. 4 years).
There are almost 2 times as many Audi dealers as there are Alfa Romeo dealers, which makes it much easier should you ever need service under the S6’s warranty.
J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Audi vehicles are better in initial quality than Alfa Romeo vehicles. J.D. Power ranks Audi 22nd in initial quality. With 12 more problems per 100 vehicles, Alfa Romeo is ranked 29th.
From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Audi vehicles are more reliable than Alfa Romeo vehicles. Consumer Reports ranks Audi 15 places higher in reliability than Alfa Romeo.
Regenerative brakes improve the S6’s fuel efficiency by converting inertia back into energy instead of wasting it. The Giulia Quadrifoglio doesn’t offer a regenerative braking system.
The S6 has 4 gallons more fuel capacity than the Giulia Quadrifoglio (19.3 vs. 15.3 gallons), for longer range between fill-ups.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi S6 higher (5 out of 10) than the Alfa Romeo Giulia Quadrifoglio (3). This means the S6 produces up to 16.5 pounds less smog-producing pollutants than the Giulia Quadrifoglio every 15,000 miles.
The S6 offers a standard sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Giulia Quadrifoglio doesn’t offer an SMG or a conventional manual transmission.
For better stopping power the S6’s brake rotors are larger than those on the Giulia Quadrifoglio:
For better traction, the S6 has larger tires than the Giulia Quadrifoglio (255/40R20 vs. 245/35R19).
For better ride, handling and brake cooling the S6 has standard 20-inch wheels. Only 19-inch wheels are available on the Giulia Quadrifoglio. The S6 offers optional 21-inch wheels.
The front and rear suspension of the S6 uses air springs for a smoother, controlled ride than the Giulia Quadrifoglio, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.
For a smoother ride and more stable handling, the S6’s wheelbase is 4.3 inches longer than on the Giulia Quadrifoglio (115.3 inches vs. 111 inches).
For better handling and stability, the track (width between the wheels) on the S6 is 3.1 inches wider in the front and .4 inches wider in the rear than on the Giulia Quadrifoglio.
The S6 has 3.6 cubic feet more passenger volume than the Giulia Quadrifoglio (99 vs. 95.4).
The S6 has 1.7 inches more front shoulder room, .5 inches more rear headroom, 2.3 inches more rear legroom and 2.9 inches more rear shoulder room than the Giulia Quadrifoglio.
The S6 has a much larger trunk than the Giulia Quadrifoglio (13.7 vs. 12 cubic feet).
With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the S6 offers cargo security. The Giulia Quadrifoglio’s non-lockable remote release defeats cargo security.
To make loading and unloading groceries and cargo easier when your hands are full, the S6’s trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The S6 also offers an optional power trunk, which opens and closes automatically by pressing a button or just by kicking your foot under the back bumper. The Giulia Quadrifoglio doesn’t offer a power or hands-free opening trunk.
Unlike the driver-only memory seat and mirrors in the Giulia Quadrifoglio, the S6 offers an optional 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 S6’s instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The Giulia Quadrifoglio has neither an oil pressure gauge nor a temperature gauge.
The S6 Prestige has a standard heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Giulia Quadrifoglio doesn’t offer a heads-up display.
If the windows are left open on the S6 the driver can close them all at the outside door handle or from a distance using the remote. On a hot day the driver can lower the windows from a distance using the keyless remote. The driver of the Giulia Quadrifoglio can only operate the windows from inside the vehicle, with the ignition on.
The Audi Advanced Key standard on the S6 allows you to unlock the doors, trunk and start the engine all without removing a key from pocket or purse. This eliminates searching for keys before loading groceries, getting in the vehicle in bad weather or making a hurried start to your trip. The Alfa Romeo Giulia Quadrifoglio’s Keyless-Go doesn’t unlock the trunk.
A power rear sunshade and manual rear side window sunshades are optional in the S6 Prestige to help block heat and glare for the rear passengers. The Giulia Quadrifoglio doesn’t offer a rear or rear side window sunshades.
When the S6 is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Giulia Quadrifoglio’s mirror doesn’t automatically adjust for backing.
Optional air-conditioned seats in the S6 keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Giulia Quadrifoglio doesn’t offer air-conditioned seats.
The S6 has a standard heated steering wheel to take the chill out of steering on extremely cold winter days before the car heater warms up. A heated steering wheel isn’t available on the Giulia Quadrifoglio w/Sparco Racing Seats.
The S6 Prestige offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Giulia Quadrifoglio.
To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi S6 has a standard wireless phone charging system (Qi) in the center console. Wireless charging costs extra on the Giulia Quadrifoglio.
The Audi A6/S6 outsold the Alfa Romeo Giulia by over two to one during 2019.
© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.
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