Certified Benz & Beemer Compares 2014 Audi Q7 VS 2014 Porsche Cayenne Near Phoenix, AZ

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2014 Audi Q7

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2014 Porsche Cayenne

Safety Comparison

The Q7’s optional front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Cayenne doesn’t offer pre-crash pretensioners.

For enhanced safety, the front and middle seat shoulder belts of the Audi Q7 are height-adjustable to accommodate a wide variety of driver and passenger heights. A better fit can prevent injuries and the increased comfort also encourages passengers to buckle up. The Porsche Cayenne has only front height-adjustable seat belts.

Both the Q7 and Cayenne have child safety locks to prevent children from opening the rear doors. The Q7 has power child safety locks, allowing the driver to activate and deactivate them from the driver's seat and to know when they're engaged. The Cayenne’s child locks have to be individually engaged at each rear door with a manual switch. The driver can’t know the status of the locks without opening the doors and checking them.

The Q7 has a standard Audi Backguard System, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Audi Backguard System moves the headrests forward to prevent neck and spine injuries. The Cayenne doesn’t offer a whiplash protection system.

Both the Q7 and the Cayenne have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front and rear seatbelt pretensioners, height-adjustable front shoulder belts, plastic fuel tanks, four-wheel antilock brakes, all-wheel drive, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

The Q7’s corrosion warranty is 2 years longer than the Cayenne’s (12 vs. 10 years).

There are over 30 percent more Audi dealers than there are Porsche dealers, which makes it easier should you ever need service under the Q7’s warranty.

Reliability Comparison

The camshafts in the Q7’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.

Fuel Economy and Range Comparison

On the EPA test cycle the Q7 3.0T S line gets better fuel mileage than the Cayenne GTS 4.8 V8 (420 HP) (16 city/22 hwy vs. 15 city/21 hwy).

Suspension and Handling Comparison

The Q7 Prestige has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The Q7’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 Cayenne doesn’t offer a load leveling suspension.

For a smoother ride and more stable handling, the Q7’s wheelbase is 4.2 inches longer than on the Cayenne (118.2 inches vs. 114 inches).

Chassis Comparison

As tested by Car and Driver, the interior of the Q7 S line Prestige is quieter than the Cayenne Turbo:



At idle

41 dB

49 dB


72 dB

77 dB

70 MPH Cruising

64 dB

69 dB

Passenger Space Comparison

The Q7 has standard seating for 7 passengers; the Cayenne can only carry 5.

The Q7 has .7 inches more front legroom, .2 inches more front shoulder room, .1 inches more rear headroom, 1.1 inches more rear legroom and 1.4 inches more rear shoulder room than the Cayenne.

Cargo Capacity Comparison

The Q7’s cargo area provides more volume than the Cayenne.



Third Seat Folded

42 cubic feet


Third Seat Removed


23.7 cubic feet

Second Seat Folded

72.5 cubic feet

62.9 cubic feet

The Q7’s cargo area is larger than the Cayenne’s in almost every dimension:



Length to seat (3rd/2nd/1st)



Max Width



Min Width



Ergonomics Comparison

If the windows are left down on the Q7 the driver can raise them all using the key in the outside lock cylinder; on a hot day the driver can lower the windows. The driver of the Cayenne can only operate the windows from inside the vehicle, with the ignition on.

A manual rear sunshade is optional in the Q7 to help block heat and glare for the rear passengers. The Cayenne doesn’t offer a rear sunshade.

When the Q7 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 Cayenne’s mirror doesn’t automatically adjust for backing.

Economic Advantages Comparison

According to The Car Book by Jack Gillis, the Q7 is less expensive to operate than the Cayenne because typical repairs cost much less on the Q7 than the Cayenne, including $189 less for a water pump, $776 less for an alternator, $122 less for front brake pads and $104 less for a fuel pump.

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