Certified Benz & Beemer Compares 2015 BMW X5 VS 2014 Porsche Cayenne Near Scottsdale, AZ

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2015 BMW X5

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VS

2014 Porsche Cayenne

Safety Comparison

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The X5 has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The Cayenne doesn’t offer a whiplash protection system.

The X5 offers optional City Collision Mitigation, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The Cayenne offers an available collision warning system without the automated brake feature that would prevent or reduce the collision if the driver fails to react.

A passive infrared night vision system optional on the X5 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 Cayenne doesn’t offer a night vision system.

The X5’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane. The Cayenne doesn’t offer a lane departure warning system.

The X5 offers an optional Surround View to allow the driver to see objects all around the vehicle on a screen. The Cayenne 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.

The X5’s optional driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Cayenne doesn’t offer a driver alert monitor.

The X5 has standard BMW Assist, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The Cayenne doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

Both the X5 and the Cayenne have standard driver and passenger frontal airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding and available all-wheel drive.

Warranty Comparison

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The X5’s corrosion warranty is 2 years longer than the Cayenne’s (12 vs. 10 years).

BMW pays for scheduled maintenance on the X5 for 4 years and 50,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Porsche doesn’t pay scheduled maintenance for the Cayenne.

There are over 74 percent more BMW dealers than there are Porsche dealers, which makes it much easier should you ever need service under the X5’s warranty.

Reliability Comparison

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The camshafts in the X5’s engine are driven by a hardened steel chain, with no maintenance needs. The Cayenne 3.6 DOHC V6’s camshafts are driven by a rubber belt that needs periodic replacement. If the Cayenne’s cam drive belt breaks the engine could be severely damaged when the pistons hit the opened valves.

Engine Comparison

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The X5’s 3.0 turbo diesel produces 15 more horsepower (255 vs. 240) and 7 lbs.-ft. more torque (413 vs. 406) than the Cayenne’s 3.0 turbo V6 diesel.

As tested in Consumer Reports the X5 s/xDrive35i 3.0 turbo 6 cyl. is faster than the Porsche Cayenne V6 (automatics tested):

X5

Cayenne

Zero to 60 MPH

7.4 sec

7.8 sec

45 to 65 MPH Passing

5 sec

5.6 sec

Quarter Mile

15.7 sec

15.9 sec

Speed in 1/4 Mile

93.6 MPH

89.7 MPH

Fuel Economy and Range Comparison

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On the EPA test cycle the X5 xDrive35d gets better fuel mileage than the Cayenne Diesel Auto (24 city/31 hwy vs. 20 city/29 hwy).

On the EPA test cycle the X5 s/xDrive35i xDrive gets better fuel mileage than the Cayenne S 4.8 V8 (400 HP) (18 city/27 hwy vs. 16 city/22 hwy).

Regardless of its engine, regenerative brakes improve the X5’s fuel efficiency by converting inertia back into energy instead of wasting it. Porsche only offers a regenerative brake system on the Cayenne Hybrid.

Regardless of its engine, the X5’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) Porsche only offers an automatic engine start/stop system on the Cayenne Automatic.

Tires and Wheels Comparison

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Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires available on the X5 can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The Cayenne doesn’t offer run-flat tires.

Suspension and Handling Comparison

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The X5 has a standard automatic rear load leveling suspension to keep ride height level with a heavy load or when towing. The Cayenne doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the X5’s wheelbase is 1.5 inches longer than on the Cayenne (115.5 inches vs. 114 inches).

Chassis Comparison

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The design of the BMW X5 amounts to more than styling. The X5 has an aerodynamic coefficient of drag of .33 Cd. That is lower than the Cayenne (.35 to .36) and many sports cars. A more efficient exterior helps keep the interior quieter and helps the X5 get better fuel mileage.

Passenger Space Comparison

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The X5 offers optional seating for 7 passengers; the Cayenne can only carry 5.

The X5 has .9 inches more front headroom, 2 inches more front shoulder room, .6 inches more rear legroom and 1.6 inches more rear shoulder room than the Cayenne.

Cargo Capacity Comparison

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The X5 has a larger cargo area with its rear seat folded than the Cayenne with its rear seat folded (66 vs. 62.9 cubic feet).

Ergonomics Comparison

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The X5’s standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the Cayenne.

The X5 offers an optional heads-up display which projects speed and other key instrumentation readouts onto the windshield, allowing drivers to view information without diverting their eyes from the road. The Cayenne doesn’t offer a heads-up display.

To improve rear visibility by keeping the rear window clear, the X5 has a standard rear variable intermittent wiper with a full on position. The rear wiper standard on the Cayenne only has an intermittent setting, so in a hard rain visibility isn’t as good.

When the X5 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 Cayenne’s mirror doesn’t automatically adjust for backing.

Standard BMW Apps for the X5 allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, tagging songs to buy them later, following twitter accounts and other connected activities without taking their eyes off the road or their hands from the wheel. The Cayenne doesn’t offer factory integrated smartphone program access.

The X5’s optional Parking Assistant can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The Cayenne doesn’t offer an automated parking system.

Recommendations Comparison

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The BMW X5 outsold the Porsche Cayenne by over two to one during the 2014 model year.

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