Certified Benz & Beemer Compares 2021 Porsche Cayenne Coupe VS 2021 Audi RS Near Scottsdale, AZ

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2021 Porsche Cayenne Coupe

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VS

2021 Audi RS

Safety Comparison

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Both the Cayenne Coupe and the RS Q8 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, height adjustable front shoulder belts, four-wheel antilock brakes, all wheel drive, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, post-collision automatic braking systems, daytime running lights, rearview cameras, available night vision systems, lane departure warning systems, blind spot warning systems, around view monitors and rear cross-path warning.

Reliability Comparison

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J.D. Power and Associates’ 2020 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Porsche 24th in initial quality. With 39 more problems per 100 vehicles, Audi is ranked 32nd.

J.D. Power and Associates’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Audi vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 16 more problems per 100 vehicles, Audi is ranked 8th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Audi vehicles. Consumer Reports ranks Porsche fourth in reliability. Audi is ranked 14th.

Engine Comparison

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The Cayenne Turbo S E-Hybrid Coupe’s standard 4.0 turbo V8 hybrid produces 79 more horsepower (670 vs. 591) and 73 lbs.-ft. more torque (663 vs. 590) than the RS Q8’s 4.0 turbo V8 hybrid.

Fuel Economy and Range Comparison

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On the EPA test cycle the Cayenne E-Hybrid Coupe running on electricity gets better fuel mileage than the RS Q8:

MPGe

Cayenne Coupe

E-Hybrid Electric Motor

45 city/48 hwy

Turbo S E-Hybrid Electric Motor

40 city/44 hwy

RS Q8

MPG

4.0 turbo V8

13 city/19 hwy

On the EPA test cycle the Cayenne Coupe running its gasoline engine gets better fuel mileage than the RS Q8:

MPG

Cayenne Coupe

E-Hybrid 3.0 turbo V6

20 city/22 hwy

3.0 turbo V6

19 city/23 hwy

4S 2.9 turbo V6

18 city/22 hwy

Turbo S E-Hybrid 4.0 turbo V8

16 city/20 hwy

GTS 4.0 turbo V8

15 city/19 hwy

Turbo 4.0 turbo V8

15 city/19 hwy

RS Q8

4.0 turbo V8

13 city/19 hwy

The Cayenne E-Hybrid Coupe can drive on battery power alone for up to 14 miles. The RS Q8 must run its internal combustion engine to move.

The Cayenne Coupe’s standard fuel tank has 1.2 gallons more fuel capacity than the RS Q8 (23.7 vs. 22.5 gallons).

Brakes and Stopping Comparison

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The Cayenne Coupe Turbo has standard air brakes, which adjust the spoiler automatically during high-speed braking in order to shorten stopping distances. The RS Q8 doesn’t offer air brakes.

Tires and Wheels Comparison

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For better traction and acceleration, the Cayenne Coupe has larger standard rear tires than the RS Q8 (305/40R20 vs. 295/40R22). The Cayenne Coupe’s optional rear tires are larger than the largest rear tires available on the RS Q8 (315/35R21 vs. 295/40R22).

The Cayenne Coupe’s optional 315/30R22 rear tires provide better handling because they have a lower 30 series profile (height to width ratio) that provides a stiffer sidewall than the RS Q8’s 35 series tires.

Suspension and Handling Comparison

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For better maneuverability, the Cayenne Coupe w/Rear Wheel Steering’s turning circle is 8.4 feet tighter than the RS Q8’s (35.1 feet vs. 43.5 feet). The Cayenne Coupe’s turning circle is 3.7 feet tighter than the RS Q8’s (39.8 feet vs. 43.5 feet).

Chassis Comparison

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The Porsche Cayenne Coupe may be more efficient, handle and accelerate better because it weighs up to about 850 pounds less than the Audi RS Q8.

The Cayenne Coupe is 3.1 inches shorter than the RS Q8, making the Cayenne Coupe easier to handle, maneuver and park in tight spaces.

The front grille of the Cayenne Coupe uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The RS Q8 doesn’t offer active grille shutters.

Ergonomics Comparison

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Unlike the driver-only memory system in the RS Q8, the Cayenne Coupe offers an optional driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle and climate settings and the front passenger seat also adjusts to the new passenger’s preset preferences.

The Cayenne Coupe’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 RS Q8 does not have an oil pressure gauge.

Recommendations Comparison

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Consumer Reports® recommends the Porsche Cayenne Coupe, based on reliability, safety and performance.

The Porsche Cayenne outsold the Audi Q8/RS Q8 by 44% during the 2020 model year.

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