Certified Benz & Beemer Compares 2007 Porsche Cayman VS 2007 Ford Shelby Near Scottsdale, AZ

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2007 Porsche Cayman

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2007 Ford Shelby

Safety Comparison

The Cayman has standard Porsche Stability Management (PSM), which uses the antilock brake hardware along with powerful software and additional sensors to detect the beginning of a skid. PSM then intervenes by automatically applying the brake at one appropriate wheel, preventing a skid. The Shelby GT500 doesn’t offer skid prevention. A National Highway Traffic Safety Administration study showed that skid control systems reduced single-vehicle car crashes by 30%.

The Cayman offers an optional backup radar to help warn drivers about vehicles, pedestrians or other obstacles behind their vehicle. This collision warning system uses radar to detect obstacles behind the rear bumper. The Shelby GT500 doesn’t offer a rear collision sensor.

Both the Cayman and the Shelby GT500 have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, four wheel antilock brakes and traction control.

Warranty Comparison

The Cayman comes with a full 4 year/50,000 mile basic warranty, which covers the entire car and includes 24 hour roadside assistance. The Shelby GT500’s 3 year/36,000 mile basic warranty expires 1 year and 14,000 miles sooner.

The Cayman’s corrosion warranty is 5 years longer than the Shelby GT500’s (10 vs. 5 years).

Engine Comparison

The flat cylinder configuration of the boxer engine in the Cayman lowers its center of gravity, enhancing handling stability. The Shelby GT500 doesn’t offer a boxer engine configuration.

Fuel Economy and Range Comparison

On the EPA test cycle the Cayman S Manual gets better fuel mileage than the Shelby GT500 (20 city/28 hwy vs. 13 city/20 hwy).

The Cayman has almost a gallon more fuel capacity than the Shelby GT500 (16.9 vs. 16 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

The Cayman S 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 Shelby GT500 doesn’t offer ceramic brake rotors.

The Cayman stops much shorter than the Shelby GT500:


Shelby GT500

80 to 0 MPH

112 feet

216 feet

Road & Track

70 to 0 MPH

147 feet

172 feet

Car and Driver

60 to 0 MPH

110 feet

122 feet

Road & Track

Tires and Wheels Comparison

The Cayman’s optional tires provide better handling because they have a lower 35 series profile (height to width ratio) which provides a stiffer sidewall than the Shelby GT500’s 45 series front and 40 series rear tires.

For better ride, handling and brake cooling the Cayman offers optional 19 inch wheels. The Shelby GT500’s largest wheels are only 18 inches.

The Cayman has a standard tire pressure monitoring system, which will alert the driver to a drop in tire pressure before damage to the tire or an accident might occur. The Shelby GT500 doesn’t offer a low tire pressure warning system.

The Cayman offers an optional space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the Shelby GT500, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling Comparison

For superior ride and handling, the Porsche Cayman has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Ford Shelby GT500 has a solid rear axle, with a non-independent rear suspension.

The Cayman offers an optional driver-adjustable suspension system. It allows the driver to choose between an extra-supple ride, reducing fatigue on long trips, or a sport setting, which allows maximum control for tricky roads. The Shelby GT500’s suspension doesn’t offer adjustable shock absorbers.

The Cayman S handles at .98 G’s, while the Shelby GT500 Coupe pulls only .87 G’s of cornering force in a Road & Track skidpad test.

The Cayman S goes through Road & Track’s slalom 8.9 MPH faster than the Shelby GT500 Coupe (74.2 vs. 65.3 MPH).

For better maneuverability the Cayman’s turning circle is 3.3 feet tighter than the Shelby GT500’s (36.4 vs. 39.7 feet).

Chassis Comparison

The Porsche Cayman may be more efficient, handle and accelerate better because it weighs about 950 to 1100 pounds less than the Ford Shelby GT500.

The Cayman is 1 foot, 3.9 inches shorter than the Shelby GT500, making the Cayman easier to handle, maneuver and park in tight spaces.

For excellent aerodynamics, the Cayman has standard flush composite headlights. The Shelby GT500 has recessed headlights which spoil its aerodynamic shape and create extra drag.

As tested by AutoWeek while at idle, the interior of the Cayman S is quieter than the Shelby GT500 Coupe (52 vs. 57 dB).

Cargo Capacity Comparison

The Cayman has a much larger trunk than the Shelby GT500 Coupe (14.5 vs. 13.1 cubic feet).

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