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For enhanced safety, the front and rear seat shoulder belts of the Audi S5 Sportback 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 S5 Sportback’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 S5 Sportback 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.
The S5 Sportback’s standard pretensioning seatbelts also sense rear collisions and remove slack from the seatbelts to help protect the occupants from whiplash and other injuries. The Giulia Quadrifoglio doesn’t offer a whiplash protection system.
The S5 Sportback 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 S5 Sportback has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The Giulia Quadrifoglio doesn’t offer all-wheel drive.
The S5 Sportback Prestige 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 S5 Sportback 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 lane departure warning systems, blind spot warning systems and rear cross-path warning.
The S5 Sportback’s corrosion warranty is 8 years longer than the Giulia Quadrifoglio’s (12 vs. 4 years).
There are over 75 percent more Audi dealers than there are Alfa Romeo dealers, which makes it much easier should you ever need service under the S5 Sportback’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 S5 Sportback’s fuel efficiency by converting inertia back into energy instead of wasting it. The Giulia Quadrifoglio doesn’t offer a regenerative braking system.
To lower fuel costs and make buying fuel easier, the Audi S5 Sportback uses regular unleaded gasoline (premium recommended for maximum performance). The Giulia Quadrifoglio requires premium, which can cost 20 to 55 cents more per gallon.
In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi S5 Sportback higher (5 out of 10) than the Alfa Romeo Giulia Quadrifoglio (3). This means the S5 Sportback produces up to 16.5 pounds less smog-producing pollutants than the Giulia Quadrifoglio every 15,000 miles.
For better traction, the S5 Sportback’s optional tires are larger than the largest tires available on the Giulia Quadrifoglio (265/30R20 vs. 245/35R19).
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 Giulia Quadrifoglio’s 35 series front tires.
For better ride, handling and brake cooling the S5 Sportback offers optional 20-inch wheels. The Giulia Quadrifoglio’s largest wheels are only 19-inches.
For better handling and stability, the track (width between the wheels) on the S5 Sportback is 1.3 inches wider in the front than on the Giulia Quadrifoglio.
As tested by Car and Driver, the interior of the S5 Sportback Prestige is quieter than the Giulia Quadrifoglio:
To make loading and unloading groceries and cargo easier when your hands are full, the S5 Sportback’s power liftgate can be opened or closed just by kicking your foot under the back bumper, leaving your hands completely free. The Giulia Quadrifoglio doesn’t offer a power or hands-free opening trunk.
The S5 Sportback 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 S5 Sportback 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.
When the S5 Sportback 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 S5 Sportback Premium Plus/Prestige 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 S5 Sportback has standard massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Giulia Quadrifoglio.
The S5 Sportback Prestige’s Park Steering Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Giulia Quadrifoglio doesn’t offer an automated parking system.
The Audi S5 comes in coupe, convertible and four door hatchback bodystyles; the Alfa Romeo Giulia Quadrifoglio isn’t available as a coupe or convertible.
Insurance will cost less for the S5 Sportback owner. The Complete Car Cost Guide estimates that insurance for the S5 Sportback will cost $2140 to $3635 less than the Giulia Quadrifoglio 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 45.5% to 45.65% of its original price after five years, while the Giulia Quadrifoglio only retains 38.19%.
IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Audi S5 Sportback will be $17009 to $24234 less than for the Alfa Romeo Giulia Quadrifoglio.
The Audi A5/S5/RS 5 outsold the Alfa Romeo Giulia by almost three to one during 2019.
© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.
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