Compare the2023 Porsche Cayenne CoupeVS 2023 Audi RS Q8

The Porsche Cayenne Coupe has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags helps prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The RS Q8 doesn’t offer knee airbags.

Both the Cayenne Coupe and the RS Q8 have standard driver and passenger frontal airbags, front and rear 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.

J.D. Power and Associates’ 2022 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Audi vehicles. With 39 fewer problems per 100 vehicles, JD Power ranks Porsche higher than Audi.

J.D. Power and Associates’ 2022 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 above average in long-term dependability. With 30 more problems per 100 vehicles in the first three years of ownership, Audi is rated below average.

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.

In a Car and Driver race course test, the Porsche Cayenne Turbo GT was clocked 9.6 seconds faster than the Audi RS Q8 (172.6 sec. vs. 182.2 sec.).

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

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

The Cayenne Coupe can travel with zero emissions for 15 to 17 miles (dependent on model). The RS Q8 can’t move without running its internal combustion engine.

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

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.

The Cayenne Coupe stops shorter than the RS Q8:

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.

The Cayenne Coupe has a standard space-saver spare (not available on E-Hybrid) so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the RS Q8; it requires you to depend on roadside assistance and your vehicle will have to be towed.

The Cayenne Turbo GT handles at 1.03 G’s, while the RS Q8 pulls only .98 G’s of cornering force in a Car and Driver skidpad test.

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).

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.

The Cayenne Coupe has 1.1 inches more front headroom and .2 inches more rear headroom than the RS Q8.

Standard trailer sway control on the Cayenne Coupe uses the Porsche Stability Management sensors to detect trailer sway, then uses individual brakes to counteract any swaying and help keep the tow vehicle and trailer steady. The RS Q8 doesn’t offer electronic trailer sway control.

J.D. Power and Associates surveys of service recipients show that Porsche service is better than Audi. J.D. Power ranks Porsche third in service department satisfaction. With a 14% lower rating, Audi is ranked 8th.

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.

The RS Q8’s cornering lamps activate a lamp on the front corner when the turn signal is activated. The Cayenne Coupe’s optional adaptive cornering lights turn the actual headlight unit up to several degrees, depending on steering wheel angle and vehicle speed. This lights a significant distance into corners at any speed.

To better shield the driver and front passenger’s vision, the Cayenne Coupe has standard dual-element sun visors that can block glare from two directions simultaneously. The RS Q8 doesn’t offer secondary sun visors.

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

J.D. Power and Associates rated the Cayenne Coupe third among upper midsize premium suvs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The RS Q8 isn’t in the top three.

The Porsche Cayenne outsold the Audi Q8/SQ8/RS Q8 by 56% during 2022.