2020 Buick Regal Sportback vs. 2020 Mercedes A-Class

Detailed Review, Specifications & Comparison

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Safety

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For enhanced safety, the front seat shoulder belts of the Buick Regal 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 Mercedes A-Class doesn’t offer height-adjustable seat belts.

To help make backing safer, the Regal Sportback (except Base)’s optional cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The A-Class doesn’t offer a cross-path warning system.

Both the Regal Sportback and the A-Class have standard driver and passenger frontal airbags, front and rear side-impact airbags, driver and front passenger knee airbags, side-impact head airbags, front seatbelt pretensioners, front-wheel drive, 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 and front and rear parking sensors.

Warranty

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

The Regal Sportback’s corrosion warranty is 1 year longer than the A-Class’ (6 vs. 5 years).

There are over 5 times as many Buick dealers as there are Mercedes dealers, which makes it much easier should you ever need service under the Regal Sportback’s warranty.

Reliability

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J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Buick vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks Buick 11th in initial quality, above the industry average. With 2 more problems per 100 vehicles, Mercedes is ranked 12th, below the industry average.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Buick vehicles are more reliable than Mercedes vehicles. J.D. Power ranks Buick fifth in reliability, above the industry average. With 16 more problems per 100 vehicles, Mercedes is ranked 13th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Buick vehicles are more reliable than Mercedes vehicles. Consumer Reports ranks Buick 3 places higher in reliability than Mercedes.

Engine

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The Regal Sportback’s standard 2.0 turbo 4-cylinder produces 62 more horsepower (250 vs. 188) and 39 lbs.-ft. more torque (260 vs. 221) than the A-Class’ 2.0 turbo 4-cylinder. The Regal Sportback’s optional 2.0 turbo 4-cylinder produces 62 more horsepower (250 vs. 188) and 74 lbs.-ft. more torque (295 vs. 221) than the A-Class’ 2.0 turbo 4-cylinder. The Regal Sportback GS’ standard 3.6 DOHC V6 produces 122 more horsepower (310 vs. 188) and 61 lbs.-ft. more torque (282 vs. 221) than the A-Class’ 2.0 turbo 4-cylinder.

As tested in Car and Driver the Buick Regal Sportback turbo 4 cyl. is faster than the Mercedes A-Class:

Regal Sportback

A-Class

Zero to 60 MPH

5.6 sec

6.1 sec

Zero to 100 MPH

13.8 sec

16.9 sec

5 to 60 MPH Rolling Start

6.1 sec

6.8 sec

Quarter Mile

14.2 sec

14.7 sec

Speed in 1/4 Mile

101 MPH

94 MPH

Fuel Economy and Range

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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-cylinder engine for maximum performance). The A-Class requires premium, which can cost 20 to 55 cents more per gallon.

The Regal Sportback has 2.8 gallons more fuel capacity than the A-Class (16.3 vs. 13.5 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 A-Class doesn’t offer a cap-less fueling system.

Transmission

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A nine-speed automatic is standard on the Buick Regal Sportback, for better acceleration and lower engine speed on the highway. Only a seven-speed automatic is available for the A-Class.

Brakes and Stopping

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For better stopping power the Regal Sportback GS’ front brake rotors are larger than those on the A-Class:

Regal Sportback GS

A-Class

Front Rotors

13.6 inches

12.6 inches

Rear Rotors

12.4 inches

11.6 inches

The Regal Sportback stops shorter than the A-Class:

Regal Sportback

A-Class

60 to 0 MPH

119 feet

125 feet

Motor Trend

60 to 0 MPH (Wet)

133 feet

134 feet

Consumer Reports

Tires and Wheels

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For better traction, the Regal Sportback has larger standard tires than the A-Class (225/55R17 vs. 205/55R17). The Regal Sportback’s optional tires are larger than the largest tires available on the A-Class (245/45R18 vs. 225/40R19).

The Regal Sportback FWD Preferred/Essence has a standard space-saver spare (not available on AWD) so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the A-Class; it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed. Some tire options on the A-Class don’t have a run-flat feature, either.

Suspension and Handling

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For a smoother ride and more stable handling, the Regal Sportback’s wheelbase is 4 inches longer than on the A-Class (111.4 inches vs. 107.4 inches).

For better handling and stability, the track (width between the wheels) on the Regal Sportback is 1.1 inches wider in the front and 2.1 inches wider in the rear than on the A-Class.

Chassis

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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 A-Class doesn’t offer active noise cancellation.

Passenger Space

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Because it has more passenger and cargo room, the EPA rates the Regal Sportback a Large car, while the A-Class is rated a Compact.

The Regal Sportback has 5 cubic feet more passenger volume than the A-Class (98 vs. 93).

The Regal Sportback has .3 inches more front legroom, 1.8 inches more front shoulder room, .2 inches more rear headroom, 3 inches more rear legroom and 1.4 inches more rear shoulder room than the A-Class.

Ergonomics

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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 A-Class does not have an oil pressure gauge.

The Regal Sportback GS has standard massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the A-Class.

Model Availability

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The Buick Regal comes in four door hatchback and station wagon bodystyles; the Mercedes A-Class isn’t available as a station wagon.

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