Over 200 people are killed each year when backed over by motor vehicles. The Regal offers an optional backup collision prevention system which use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The A4 doesn’t offer backup collision prevention brakes.
Both the Regal and the A4 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front wheel drive, height adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all wheel drive, 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 2 years and 20,000 miles longer than Audi covers the A4. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the A4 ends after only 4 years or 50,000 miles.
Buick pays for scheduled maintenance on the Regal for 2 years and 24,000 miles. Buick will pay for oil changes, lubrication and any other required maintenance (up to 2 oil changes). Audi only pays for the first scheduled maintenance visit on the A4.
There are over 7 times as many Buick dealers as there are Audi dealers, which makes it much easier should you ever need service under the Regal’s warranty.
To reliably start during all conditions and help handle large electrical loads, the Regal has a standard 512-amp battery. The A4’s 420-amp battery isn’t as powerful.
J.D. Power and Associates’ 2016 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 7th in initial quality, above the industry average. With 14 more problems per 100 vehicles, Audi is ranked 14th, below the industry average.
J.D. Power and Associates’ 2016 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 28 more problems per 100 vehicles, Audi is ranked 11th.
The Regal Turbo/GS’ standard 2.0 turbo 4 cyl. produces 7 more horsepower (259 vs. 252) and 22 lbs.-ft. more torque (295 vs. 273) than the A4’s 2.0 turbo 4 cyl.
To lower fuel costs and make buying fuel easier, the Buick Regal uses regular unleaded gasoline (premium recommended on Regal Turbo/GS for maximum performance). The A4 requires premium, which can cost 20 to 55 cents more per gallon.
The Regal FWD’s standard fuel tank has 3.3 gallons more fuel capacity than the A4 (18.6 vs. 15.3 gallons), for longer range between fill-ups. The Regal AWD’s standard fuel tank has 4.2 gallons more fuel capacity than the A4 (19.5 vs. 15.3 gallons).
For better stopping power the Regal GS’ front brake rotors are larger than those on the A4:
For better traction, the Regal has larger standard tires than the A4 (235/50R18 vs. 225/50R17). The Regal GS’ optional tires are larger than the largest tires available on the A4 (255/35R20 vs. 245/40R18).
For better ride, handling and brake cooling the Regal has standard 18-inch wheels. Smaller 17-inch wheels are standard on the A4. The Regal GS’ optional 20-inch wheels are larger than the 19-inch wheels optional on the A4.
For better handling and stability, the track (width between the wheels) on the Regal is .5 inches wider in the front and 1.3 inches wider in the rear than on the A4.
Because it has more passenger and cargo room, the Regal is rated a Mid-size car by the EPA, while the A4 is rated a Compact.
The Regal has 4.8 cubic feet more passenger volume than the A4 (96.8 vs. 92).
The Regal has .8 inches more front legroom, .8 inches more front shoulder room and 1.6 inches more rear legroom than the A4.
The Regal has a much larger trunk than the A4 (14.2 vs. 13 cubic feet).
The Regal 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 A4 doesn’t offer a remote starting system.
The Regal’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 A4 does not have an oil pressure gauge.
When the Regal is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The A4’s mirrors don’t automatically adjust for backing.
The Regal Premium/GS has a 115-volt a/c outlet on the center console, allowing you to recharge a laptop or run small household appliances without special adapters that can break or get misplaced. The A4 doesn’t offer a house-current electrical outlet.
According to The Car Book by Jack Gillis, the Regal is less expensive to operate than the A4 because typical repairs cost much less on the Regal than the A4, including $169 less for a water pump, $433 less for a starter, $172 less for fuel injection and $341 less for a fuel pump.
Consumer Reports® recommends the Buick Regal, based on reliability, safety and performance.