2020 Porsche Cayenne vs. 2020 Alfa Romeo Stelvio

Detailed Review, Specifications & Comparison

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Safety

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The Cayenne has a standard Multi-collision Brake System, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Stelvio doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.

To provide maximum traction and stability on all roads, All-Wheel Drive is standard on the Cayenne. But it costs extra on the Stelvio.

A passive infrared night vision system optional on the Cayenne helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera to detect heat, the system then displays the image on a monitor in the dashboard. The Stelvio doesn’t offer a night vision system.

The Cayenne offers an optional Surround View to allow the driver to see objects all around the vehicle on a screen. The Stelvio only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

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

The Porsche Cayenne weighs 575 to 1774 pounds more than the Alfa Romeo Stelvio. The NHTSA advises that heavier vehicles are much safer in collisions than their significantly lighter counterparts.

Warranty

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The Cayenne’s corrosion warranty is 8 years longer than the Stelvio’s (12 vs. 4 years).

There are over 9 percent more Porsche dealers than there are Alfa Romeo dealers, which makes it easier should you ever need service under the Cayenne’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 Porsche vehicles are better in initial quality than Alfa Romeo vehicles. J.D. Power ranks Porsche 15th in initial quality. With 22 more problems per 100 vehicles, Alfa Romeo is ranked 29th.

From surveys of all its subscribers, Consumer Reports’ December 2019 Auto Issue reports that Porsche vehicles are more reliable than Alfa Romeo vehicles. Consumer Reports ranks Porsche fourth in reliability. Alfa Romeo is ranked 29th.

Engine

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The Cayenne’s standard 3.0 turbo V6 produces 55 more horsepower (335 vs. 280) and 26 lbs.-ft. more torque (332 vs. 306) than the Stelvio’s 2.0 turbo 4-cylinder. The Cayenne S’ standard 2.9 turbo V6 produces 154 more horsepower (434 vs. 280) and 100 lbs.-ft. more torque (406 vs. 306) than the Stelvio’s 2.0 turbo 4-cylinder. The Cayenne E-Hybrid’s standard 3.0 turbo V6 hybrid produces 175 more horsepower (455 vs. 280) and 210 lbs.-ft. more torque (516 vs. 306) than the Stelvio’s 2.0 turbo 4-cylinder. The Cayenne Turbo’s standard 4.0 turbo V8 produces 261 more horsepower (541 vs. 280) and 262 lbs.-ft. more torque (568 vs. 306) than the Stelvio’s 2.0 turbo 4-cylinder. The Cayenne Turbo S E-Hybrid’s standard 4.0 turbo V8 hybrid produces 390 more horsepower (670 vs. 280) and 357 lbs.-ft. more torque (663 vs. 306) than the Stelvio’s 2.0 turbo 4-cylinder.

As tested in Car and Driver the Porsche Cayenne (base engine) is faster than the Alfa Romeo Stelvio 2.0T:

Cayenne

Stelvio

Zero to 60 MPH

4.8 sec

5.4 sec

Zero to 100 MPH

12.5 sec

14.7 sec

5 to 60 MPH Rolling Start

5.8 sec

6.5 sec

Quarter Mile

13.5 sec

14.1 sec

Speed in 1/4 Mile

103 MPH

98 MPH

Fuel Economy and Range

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On the EPA test cycle the Cayenne E-Hybrid running on electricity gets better fuel mileage than the Stelvio AWD (46 city/46 hwy MPGe vs. 22 city/28 hwy).

The Cayenne Turbo S E-Hybrid can drive on battery power alone for up to 31 miles. The Stelvio must run its internal combustion engine to move.

Regenerative brakes improve the Cayenne’s fuel efficiency by converting inertia back into energy instead of wasting it (mild regeneration on non-hybrids). The Stelvio doesn’t offer a regenerative braking system.

The Cayenne E-Hybrid’s standard fuel tank has 2.9 gallons more fuel capacity than the Stelvio (19.8 vs. 16.9 gallons), for longer range between fill-ups. The Cayenne’s standard fuel tank has 6.8 gallons more fuel capacity than the Stelvio (23.7 vs. 16.9 gallons).

Transmission

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The Cayenne’s optional launch control uses engine electronics to hold engine RPM’s precisely in order to provide the most stable and rapid acceleration possible, using all of the available traction. The Stelvio doesn’t offer launch control.

Brakes and Stopping

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For better stopping power the Cayenne’s brake rotors are larger than those on the Stelvio:

Cayenne

Cayenne E-Hybrid

Cayenne S

Cayenne Turbo

Cayenne opt.

Stelvio

Front Rotors

13.8 inches

14.2 inches

15.4 inches

16.3 inches

17.3 inches

13 inches

Rear Rotors

13 inches

14.1 inches

13 inches

14.4 inches

16.1 inches

12.5 inches

The Cayenne offers optional heat-treated ceramic brake rotors, which last ten to twenty times as long as conventional cast iron rotors, don’t rust, don’t fade during repeated high speed braking, and their lighter weight contribute to better braking, handling and acceleration. The Stelvio doesn’t offer ceramic brake rotors.

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

The Cayenne stops much shorter than the Stelvio:

Cayenne

Stelvio

70 to 0 MPH

159 feet

176 feet

Car and Driver

60 to 0 MPH

100 feet

127 feet

Motor Trend

Tires and Wheels

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For better traction, the Cayenne has larger standard tires than the Stelvio (F:255/55R19 & R:275/50R19 vs. 235/60R18). The Cayenne’s optional tires are larger than the largest tires available on the Stelvio (F:285/40R21 & R:315/35R21 vs. 255/45R20).

The Cayenne’s standard 255/55R19 front and 275/50R19 rear tires provide better handling because they have a lower 55 series front and 50 series rear profile (height to width ratio) that provides a stiffer sidewall than the Stelvio’s standard 60 series tires. The Cayenne’s optional 285/35R22 front and 315/30R22 rear tires have a lower 35 series front and 30 series rear profile than the Stelvio’s optional 45 series tires.

For better ride, handling and brake cooling the Cayenne has standard 19-inch wheels. Smaller 18-inch wheels are standard on the Stelvio. The Cayenne’s optional 22-inch wheels are larger than the 20-inch wheels optional on the Stelvio.

Suspension and Handling

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The Cayenne offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The Stelvio doesn’t offer an active sway bar system.

The Cayenne offers an available adjustable active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Alfa Romeo doesn’t offer an active suspension on the Stelvio.

The Cayenne has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Cayenne’s height leveling suspension allows the driver to raise ride height for better off-road clearance and then lower it again for easier entering and exiting and better on-road handling. The Stelvio doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the Cayenne’s wheelbase is 3.1 inches longer than on the Stelvio (114 inches vs. 110.9 inches).

For better handling and stability, the average track (width between the wheels) on the Cayenne is 2.8 inches wider in the front and .8 inches wider in the rear than the track on the Stelvio.

The Cayenne handles at .96 G’s, while the Stelvio AWD pulls only .84 G’s of cornering force in a Car and Driver skidpad test.

The Cayenne Turbo executes Motor Trend’s “Figure Eight” maneuver 3 seconds quicker than the Stelvio Ti AWD (23.9 seconds @ .83 average G’s vs. 26.9 seconds @ .67 average G’s).

For better maneuverability, the Cayenne’s turning circle with optional rear wheel steering is 3.4 feet tighter than the Stelvio’s (35.1 feet vs. 38.5 feet).

For greater off-road capability the Cayenne has a greater minimum ground clearance than the Stelvio (8.2 vs. 8.1 inches), allowing the Cayenne to travel over rougher terrain without being stopped or damaged. The Cayenne Air Suspension’s minimum ground clearance is 1.5 inches higher than on the Stelvio (9.6 vs. 8.1 inches).

Chassis

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

As tested by Car and Driver, the interior of the Cayenne is quieter than the Stelvio AWD:

Cayenne

Stelvio

At idle

40 dB

43 dB

70 MPH Cruising

63 dB

66 dB

Passenger Space

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/27

The Cayenne has 4.5 inches more front legroom, 1.6 inches more front shoulder room, .1 inches more rear headroom, 8.4 inches more rear legroom and .5 inches more rear shoulder room than the Stelvio.

For enhanced passenger comfort on long trips the Cayenne’s rear seats recline. The Stelvio’s rear seats don’t recline.

The front step up height for the Cayenne is .3 inches lower than the Stelvio (16.75” vs. 17”). The Cayenne’s rear step up height is 2 inches lower than the Stelvio’s (16” vs. 18”).

Cargo Capacity

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The Cayenne has a much larger cargo volume with its rear seat up than the Stelvio with its rear seat up (27.1 vs. 18.5 cubic feet). The Cayenne has a much larger cargo volume with its rear seat folded than the Stelvio with its rear seat folded (60.3 vs. 56.5 cubic feet).

The Cayenne’s cargo area is larger than the Stelvio’s in almost every dimension:

Cayenne

Stelvio

Length to seat (2nd/1st)

39.6”/74.9”

39.4”/72.5”

Max Width

42”

46.5”

Min Width

42”

36.7”

Height

30.4”

28”

Towing

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The Cayenne’s standard towing capacity is much higher than the Stelvio’s (7700 vs. 3000 pounds).

Ergonomics

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Unlike the driver-only memory seat and mirrors in the Stelvio, the Cayenne 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’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 Stelvio has neither an oil pressure gauge nor a temperature gauge.

The Cayenne offers an optional heads-up display that projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The Stelvio doesn’t offer a heads-up display.

Manual rear side window sunshades are available in the Cayenne to help block heat and glare for the rear passengers. The Stelvio doesn’t offer rear side window sunshades.

When the Cayenne with available tilt-down mirrors is put in reverse, the passenger rearview mirror tilts from its original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirror into its original position. The Stelvio’s mirror doesn’t automatically adjust for backing.

Optional air conditioned front and rear seats keep the Cayenne’s passengers comfortable and take the sting out of hot leather in summer. The Stelvio doesn’t offer air-conditioned seats.

The Cayenne offers optional massaging front seats in order to maximize comfort and eliminate fatigue on long trips. Massaging seats aren’t available in the Stelvio.

The Cayenne’s optional Active Park Assist can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Stelvio doesn’t offer an automated parking system.

Economic Advantages

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The Cayenne will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the Cayenne will retain 50.86% to 59.21% of its original price after five years, while the Stelvio only retains 40.25% to 42.03%.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/02/27

J.D. Power and Associates rated the Cayenne first among midsize premium SUVs in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Stelvio isn’t in the top three.

The Porsche Cayenne outsold the Alfa Romeo Stelvio by 85% during the 2019 model year.

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