2020 Audi S5 Sportback vs. 2020 Infiniti Q50

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/04/02

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 Infiniti Q50 doesn’t offer pretensioners for the rear 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 Q50 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 Q50 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.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the S5 Sportback. But it costs extra on the Q50.

Both the S5 Sportback and the Q50 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, 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, 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 185 vehicles tested by the IIHS. The Q50 has not been fully tested, yet.

Warranty

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The S5 Sportback’s corrosion warranty is 5 years longer than the Q50’s (12 vs. 7 years).

There are over 42 percent more Audi dealers than there are Infiniti dealers, which makes it easier should you ever need service under the S5 Sportback’s warranty.

Reliability

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J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Audi vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Audi 8th in reliability, above the industry average. With 4 more problems per 100 vehicles, Infiniti is ranked 11th.

Engine

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The S5 Sportback’s 3.0 turbo V6 produces 49 more horsepower (349 vs. 300) and 74 lbs.-ft. more torque (369 vs. 295) than the Q50 3.0t’s standard 3.0 turbo V6. The S5 Sportback’s 3.0 turbo V6 produces 19 lbs.-ft. more torque (369 vs. 350) than the Q50 Red Sport 400’s standard 3.0 turbo V6.

As tested in Car and Driver the Audi S5 Sportback is faster than the Q50 Red Sport 400:

S5 Sportback

Q50

Zero to 60 MPH

4.3 sec

4.5 sec

Quarter Mile

12.9 sec

13 sec

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/04/02

On the EPA test cycle the S5 Sportback gets better fuel mileage than the Q50 3.0t AWD (20 city/27 hwy vs. 19 city/27 hwy).

Regenerative brakes improve the S5 Sportback’s fuel efficiency by converting inertia back into energy instead of wasting it. The Q50 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 Q50 requires premium, which can cost 20 to 55 cents more per gallon.

Environmental Friendliness

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In its Green Vehicle Guide, the U.S. Environmental Protection Agency (EPA) rates the Audi S5 Sportback higher (5 out of 10) than the Infiniti Q50 (3). This means the S5 Sportback produces up to 16.5 pounds less smog-producing pollutants than the Q50 every 15,000 miles.

Transmission

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An eight-speed automatic is standard on the Audi S5 Sportback, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the Q50.

Brakes and Stopping

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For better stopping power the S5 Sportback’s standard brake rotors are larger than those on the Q50:

S5 Sportback

Q50

Front Rotors

13.8 inches

12.6 inches

Rear Rotors

13 inches

12.1 inches

The S5 Sportback stops shorter than the Q50:

S5 Sportback

Q50

70 to 0 MPH

158 feet

165 feet

Car and Driver

Tires and Wheels

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For better traction, the S5 Sportback has larger standard tires than the Q50 (245/40R18 vs. 225/55R17). The S5 Sportback’s optional tires are larger than the largest tires available on the Q50 (265/30R20 vs. 245/40R19).

The S5 Sportback’s standard tires provide better handling because they have a lower 40 series profile (height to width ratio) that provides a stiffer sidewall than the Q50’s standard 55 series tires. The S5 Sportback’s optional tires have a lower 30 series profile than the Q50 Red Sport 400’s 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the S5 Sportback has standard 18-inch wheels. Smaller 17-inch wheels are standard on the Q50. The S5 Sportback’s optional 20-inch wheels are larger than the 19-inch wheels on the Q50 Sport/Red Sport 400 AWD.

Suspension and Handling

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For better handling and stability, the track (width between the wheels) on the S5 Sportback is 1.9 inches wider in the front and .2 inches wider in the rear than the average track on the Q50.

The S5 Sportback Prestige handles at .95 G’s, while the Q50 Red Sport 400 pulls only .88 G’s of cornering force in a Car and Driver skidpad test.

Cargo Capacity

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The S5 Sportback’s standard rear seats fold to accommodate long and bulky cargo. The Q50 Pure doesn’t offer folding rear seats, only a ski pass-through.

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 Q50 doesn’t offer a power or hands-free opening trunk.

Ergonomics

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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 Q50 doesn’t offer a heads-up display.

The S5 Sportback’s power parking brake sets with one touch and releases with one touch or automatically. The Q50’s parking brake has to released manually.

The power windows standard on both the S5 Sportback and the Q50 have locks to prevent small children from operating them. When the lock on the S5 Sportback is engaged the driver can still operate all of the windows, for instance to close one opened by a child. The Q50 prevents the driver from operating the other windows just as it does the other passengers.

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 Q50 doesn’t offer heated windshield washer nozzles.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The S5 Sportback Prestige has standard headlight washers to keep headlight output high. The Q50 doesn’t offer headlight washers.

The S5 Sportback has standard heated front seats. Heated front seats cost extra on the Q50, and aren’t available on the Q50 Pure. The S5 Sportback Premium Plus/Prestige also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Q50.

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 Q50 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 Q50.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Audi S5 Premium Plus/Prestige has a standard wireless phone charging system (Qi) in the center console. The Q50 doesn’t offer wireless personal charging.

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 Q50 doesn’t offer an automated parking system.

Model Availability

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/04/02

The Audi S5 comes in coupe, convertible and four door hatchback bodystyles; the Infiniti Q50 isn’t available as a coupe or convertible.

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

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