Certified Benz & Beemer Compares 2007 Porsche Cayman VS 2007 Chevrolet Corvette Near Scottsdale, AZ

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2007 Porsche Cayman

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2007 Chevrolet Corvette

Safety Comparison

The Cayman has standard head airbag curtains which act as a forgiving barrier between the driver and outboard passenger's upper bodies and the window and pillars. Combined with high-strength steel door beams and lower side airbags this system increases head protection in broadside collisions. Head airbags cost extra in the Corvette.

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 Corvette doesn’t offer a rear collision sensor.

Both the Cayman and the Corvette have standard driver and passenger frontal airbags, front seatbelt pretensioners, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

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 Corvette’s 3 year/36,000 mile basic warranty expires 1 year and 14,000 miles sooner.

The Cayman’s corrosion warranty is 4 years and unlimited miles longer than the Corvette’s (10/unlimited vs. 6/100,000).

Reliability Comparison

For smoother operation, better efficiency and fewer moving parts, the engines in the Cayman have an overhead cam design, rather than the old pushrod design of the engines in the Corvette.

J.D. Power and Associates rated the Cayman first among compact premium sporty cars in their 2006 Initial Quality Study. The Corvette was rated third in its category.

J.D. Power and Associates’ 2005 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Chevrolet vehicles. J.D. Power ranks Porsche first in initial quality. With 33 more problems per 100 vehicles, Chevrolet is ranked 14th.

Engine Comparison

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

Fuel Economy and Range Comparison

On the EPA test cycle the Cayman gets better fuel mileage than the Corvette:



2.7 6 cyl./5-spd Manual

23 city/32 hwy


2.7 6 cyl./6-spd Manual

22 city/31 hwy

18 city/28 hwy

6.0 LS2 V8

3.4 6 cyl./Manual

20 city/28 hwy

16 city/26 hwy

7.0 LS7 V8

2.7 6 cyl./Auto

21 city/28 hwy

17 city/27 hwy

6.0 LS2 V8

3.4 6 cyl./Auto

20 city/27 hwy


Brakes and Stopping Comparison

The Cayman’s brakes have 53% more swept area (the area covered by the brake pads) than the Corvette (722 vs. 471 square inches), so the Cayman has more braking power available.

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 Corvette doesn’t offer ceramic brake rotors.

The Cayman stops much shorter than the Corvette:



80 to 0 MPH

112 feet

204 feet

Road & Track

70 to 0 MPH

147 feet

170 feet

Car and Driver

60 to 0 MPH

110 feet

119 feet

Road & Track

Tires and Wheels Comparison

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

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 Corvette, it requires you to depend on its run-flat tires, which limits mileage and speed before they are repaired. If a run-flat is damaged beyond repair by a road hazard your vehicle will have to be towed.

Suspension and Handling Comparison

The front and rear suspension of the Cayman uses coil springs for better ride, handling and control than the Corvette, which uses transverse leafs springs. Coil springs compress more progressively and offer more suspension travel for a smoother ride with less bottoming out.

The Cayman S handles at 1.01 G’s, while the Corvette Coupe pulls only .95 G’s of cornering force in a Motor Trend skidpad test.

The Cayman S goes through Road & Track’s slalom 7.2 MPH faster than the Corvette Coupe (74.2 vs. 67 MPH).

For better maneuverability the Cayman’s turning circle is 2.6 feet tighter than the Corvette’s (36.4 vs. 39 feet).

Chassis Comparison

To almost totally eliminate engine vibration in the passenger area, the Cayman has liquid-filled engine mounts. The liquid helps further dampen engine harshness. The Corvette uses conventional solid rubber engine mounts.

The design of the Porsche Cayman amounts to more than styling. The Cayman has an aerodynamic coefficient of drag of .29 Cd. That is lower than the Corvette (.286 to .34). A more efficient exterior helps the Cayman go faster and keeps the interior quieter. It also helps the Cayman get better fuel mileage.

As tested by AutoWeek, the interior of the Cayman S is quieter than the Corvette Coupe:



At idle

52 dB

64 dB

Ergonomics Comparison

The Cayman’s front power windows raise and lower automatically with one touch, especially convenient at tollbooths or drive-up windows. The power windows on the Corvette don’t raise automatically.

If the windows are left down on the Cayman 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 Corvette can only operate the windows from inside the vehicle, with the ignition on.

The Cayman’s optional wipers adjust their speed and turn on and off automatically according to the amount of rainfall on the windshield. The Corvette’s manually variable intermittent wipers have to be constantly adjusted.

Heated windshield washer nozzles are standard on the Cayman to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The Corvette doesn’t offer heated windshield washer nozzles.

To improve rear visibility by keeping the rear window clear, the Cayman offers an optional rear wiper. The Corvette doesn’t offer a rear wiper.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The Cayman offers available headlight washers to keep headlight output high. The Corvette doesn’t offer headlight washers.

The Cayman’s standard separate stalk mounted cruise control is close at hand. The Corvette’s cruise control is on an over-crowded turn signal stalk.

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