2020 Audi A5 Sportback vs. 2020 Cadillac CT4

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 2020/04/06

For enhanced safety, the front and rear seat shoulder belts of the Audi A5 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 Cadillac CT4 doesn’t offer pretensioners for the rear seat belts.

The A5 Sportback’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The CT4 doesn’t offer pre-crash pretensioners.

The A5 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 CT4 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 A5 Sportback. But it costs extra on the CT4.

The A5 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 CT4 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 A5 Sportback and the CT4 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, daytime running lights, rearview cameras, available lane departure warning systems, blind spot warning systems 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 A5 Sportback the rating of “Top Pick” for 2017, a rating granted to only 185 vehicles tested by the IIHS. The CT4 has not been tested, yet.

Warranty

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The A5 Sportback’s corrosion warranty is 6 years longer than the CT4’s (12 vs. 6 years).

Reliability

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The Audi A5 Sportback’s engine uses a cast iron block for durability, while the CT4’s engines use an aluminum block. Aluminum engine blocks are much more prone to warp and crack at high temperatures than cast iron.

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 Cadillac vehicles. J.D. Power ranks Audi 8th in reliability, above the industry average. With 42 more problems per 100 vehicles, Cadillac is ranked 23rd.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Audi vehicles are more reliable than Cadillac vehicles. Consumer Reports ranks Audi 16 places higher in reliability than Cadillac.

Engine

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The A5 Sportback’s 2.0 turbo 4-cylinder produces 11 more horsepower (248 vs. 237) and 15 lbs.-ft. more torque (273 vs. 258) than the CT4’s standard 2.0 turbo 4-cylinder.

Fuel Economy and Range

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Regenerative brakes improve the A5 Sportback’s fuel efficiency by converting inertia back into energy instead of wasting it. The CT4 doesn’t offer a regenerative braking system.

Transmission

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The A5 Sportback 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 CT4 doesn’t offer an SMG or a conventional manual transmission.

The A5 Sportback’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 CT4 doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the A5 Sportback’s brake rotors are larger than those on the CT4:

A5 Sportback

CT4

CT4 Sport

Front Rotors

13.3 inches

11.8 inches

12.6 inches

Rear Rotors

13 inches

12.4 inches

12.4 inches

Tires and Wheels

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For better traction, the A5 Sportback has larger standard tires than the CT4 (245/40R18 vs. 225/45R17). The A5 Sportback’s optional tires are larger than the largest tires available on the CT4 (255/35R19 vs. 235/40R18).

The A5 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 CT4’s 45 series tires. The A5 Sportback’s optional tires have a lower 35 series profile than the CT4 Premium Luxury’s 40 series tires.

For better ride, handling and brake cooling the A5 Sportback has standard 18-inch wheels. Smaller 17-inch wheels are standard on the CT4. The A5 Sportback’s optional 19-inch wheels are larger than the 18-inch wheels on the CT4 Premium Luxury.

Suspension and Handling

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The A5 Sportback offers an available driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The CT4’s suspension doesn’t offer adjustable shock absorbers.

For a smoother ride and more stable handling, the A5 Sportback’s wheelbase is 1.9 inches longer than on the CT4 (111.2 inches vs. 109.3 inches).

For better handling and stability, the track (width between the wheels) on the A5 Sportback is 2.2 inches wider in the front than on the CT4.

Passenger Space

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The A5 Sportback has .5 inches more front shoulder room, .5 inches more rear headroom, 1.7 inches more rear legroom and .6 inches more rear shoulder room than the CT4.

Cargo Capacity

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To make loading groceries and cargo easier when your hands are full, the A5 Sportback’s available liftgate can be opened and closed just by kicking your foot under the back bumper, leaving your hands completely free. The CT4 doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Ergonomics

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The A5 Sportback’s rain-sensitive wipers adjust their speed and turn on and off automatically based on the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The CT4’s standard manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the A5 Sportback to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The CT4 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 A5 Sportback Prestige has standard headlight washers to keep headlight output high. The CT4 doesn’t offer headlight washers.

The A5 Sportback has standard heated front seats. Heated front seats cost extra on the CT4. The A5 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 CT4.

The A5 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 CT4 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 2020/04/06

The Audi A5 comes in coupe, convertible and four door hatchback bodystyles; the Cadillac CT4 isn’t available as a coupe or convertible.

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