2019 Buick Regal Sportback vs. 2019 Audi S5 Sportback

Detailed Review, Specifications & Comparison

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Both the Regal Sportback and the S5 Sportback have standard driver and passenger frontal airbags, front side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, front and rear parking sensors and rear cross-path warning.


Buick’s powertrain warranty covers the Regal Sportback 2 years and 20,000 miles longer than Audi covers the S5 Sportback. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the S5 Sportback ends after only 4 years or 50,000 miles.

There are almost 7 times as many Buick dealers as there are Audi dealers, which makes it much easier should you ever need service under the Regal Sportback’s warranty.


J.D. Power and Associates’ 2018 Initial Quality Study of new car owners surveyed provide the statistics that show that Buick vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Buick 16th in initial quality. With 10 more problems per 100 vehicles, Audi is ranked 25th.

J.D. Power and Associates’ 2018 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Buick vehicles are more reliable than Audi vehicles. J.D. Power ranks Buick third in reliability, above the industry average. With 25 more problems per 100 vehicles, Audi is ranked 13th.

Fuel Economy and Range

To lower fuel costs and make buying fuel easier, the Buick Regal Sportback uses regular unleaded gasoline (premium recommended with the 2.0 turbo 4 cyl. engine for maximum performance). The S5 Sportback requires premium, which can cost 20 to 55 cents more per gallon.

The Regal Sportback has a gallon more fuel capacity than the S5 Sportback (16.3 vs. 15.3 gallons), for longer range between fill-ups.

The Regal Sportback has a standard cap-less fueling system. The fuel filler is automatically opened when the fuel nozzle is inserted and automatically closed when it’s removed. This eliminates the need to unscrew and replace the cap and it reduces fuel evaporation, which causes pollution. The S5 Sportback doesn’t offer a cap-less fueling system.


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

Suspension and Handling

For better handling and stability, the track (width between the wheels) on the Regal Sportback is .3 inches wider in the front and 1.3 inches wider in the rear than on the S5 Sportback.


The Regal Sportback AWD uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The S5 Sportback doesn’t offer active noise cancellation.

As tested by Car and Driver, the interior of the Regal Sportback Essence is quieter than the S5 Sportback Prestige:


Regal Sportback

S5 Sportback

At idle

37 dB

40 dB


75 dB

79 dB

70 MPH Cruising

70 dB

70 dB

Passenger Space

The Regal Sportback has .8 inches more front legroom, 1.2 inches more front shoulder room, .4 inches more rear headroom, 1.8 inches more rear legroom and .9 inches more rear shoulder room than the S5 Sportback.

Cargo Capacity

The Regal Sportback has a much larger trunk with its rear seat up than the S5 Sportback with its rear seat up (31.5 vs. 21.8 cubic feet). The Regal Sportback has a much larger trunk with its rear seat folded than the S5 Sportback with its rear seat folded (60.7 vs. 35 cubic feet).


The Regal Sportback offers a 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 in the S5 Sportback, the Regal Sportback offers an optional driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat and outside mirror angle and the front passenger seat also adjusts to the new passenger’s preset preferences.

The Regal Sportback (except Base/Preferred)’s optional easy entry system glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The S5 Sportback doesn’t offer an easy entry system.

The Regal Sportback’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 S5 Sportback does not have an oil pressure gauge.

To help drivers avoid possible obstacles, the Regal Sportback offers optional cornering lights to illuminate around corners when the turn signals are activated. The S5 Sportback doesn’t offer cornering lights.

Model Availability

The Regal Sportback is available in both front-wheel drive and all-wheel drive configurations. The S5 Sportback doesn’t offer a two-wheel drive configuration.

Economic Advantages

Insurance will cost less for the Regal Sportback owner. The Complete Car Cost Guide estimates that insurance for the Regal Sportback will cost $3915 to $6310 less than the S5 Sportback over a five-year period.

IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Buick Regal Sportback will be $20329 to $24210 less than for the Audi S5 Sportback.

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

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