Certified Benz & Beemer Compares 2004 Porsche 911 VS 2004 Chevrolet Corvette Near Scottsdale, AZ

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2004 Porsche 911

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2004 Chevrolet Corvette

Safety Comparison

To maximize occupant safety, the front seat shoulder belts of the Porsche 911 have pretensioners to eliminate dangerous slack in the event of a collision and force limiters to limit the pressure the belts will exert on the passengers. The Chevrolet Corvette doesn’t offer pretensioners.

The 911 has standard front seat tall, head-protecting side-impact airbags, which act as a forgiving barrier between the passengers and the door. Combined with high-strength steel door beams this system increases protection from broadside collisions. The Corvette doesn’t offer side-impact airbags.

The 911 has all wheel drive to maximize traction under poor conditions, especially in ice and snow. The Corvette doesn’t offer all wheel drive.

The 911 offers an optional Park Assistance 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 911 and the Corvette have standard driver and passenger frontal airbags, four wheel antilock brakes, available traction control and electronic stability systems to prevent skidding.

The Porsche 911 has a better injury history. The 911 was involved in injury causing accidents at a rate 5% lower per vehicle registered than the Corvette, according to the Highway Loss Data Institute.

Warranty Comparison

The 911 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 911’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 911 have an overhead cam design, rather than the old pushrod design of the engines in the Corvette.

J.D. Power and Associates’ surveys of new car owners provide the statistics that show that Porsche vehicles are better in initial quality than Chevrolet vehicles. J.D. Power ranks Porsche 7th in initial quality, above the industry average. With 13 more problems per 100 vehicles, Chevrolet is ranked 13th.

J.D. Power and Associates’ surveys of the owners of three-year-old cars provide the long-term dependability statistics which show that Porsche vehicles are more reliable than Chevrolet vehicles. J.D. Power ranks Porsche fourth in reliability. With 79 more problems per 100 vehicles, Chevrolet is ranked 17th.

Engine Comparison

The 911 has more powerful engines than the Corvette:



911 GT3 3.6 DOHC 6 cyl.

380 HP

284 lbs.-ft.

911 Turbo 3.6 turbo DOHC 6 cyl.

415 HP

415 lbs.-ft.

911 Turbo X50 3.6 turbo DOHC 6 cyl.

444 HP

457 lbs.-ft.

Corvette automatic 5.7 V8

350 HP

360 lbs.-ft.

Corvette 6 speed 5.7 V8

350 HP

375 lbs.-ft.

Corvette Z06 5.7 V8

405 HP

400 lbs.-ft.

As tested in Road & Track the Porsche 911 6 cyl. is faster than the Corvette LS1 (manual transmissions tested):



Zero to 60 MPH

4.9 sec

5.3 sec

Zero to 80 MPH

8.1 sec

8.3 sec

Quarter Mile

13.4 sec

13.6 sec

As tested in Car and Driver the Porsche 911 6 cyl. is faster than the Corvette LS1 (automatics tested):



Zero to 60 MPH

5.2 sec

5.3 sec

Zero to 100 MPH

12.7 sec

13.1 sec

Speed in 1/4 Mile

104 MPH

103 MPH

The flat cylinder configuration of the boxer engine in the 911 lowers its center of gravity, enhancing handling stability. The Corvette doesn’t offer a boxer engine configuration.

Brakes and Stopping Comparison

For better stopping power the GT2’s front brake rotors are larger than those on the Corvette:



Front Rotors

13.8 inches

12.6 inches

Rear Rotors

13.8 inches

11.8 inches

The 911’s standard brakes have 27% more swept area (the area covered by the brake pads) than the Corvette (535 vs. 421 square inches), so the 911 has more braking power available. The GT2’s brakes have 70% more swept area (the area covered by the brake pads) than the Corvette (717 vs. 421 square inches), so the GT2 has more braking power available.

The 911 stops much shorter than the Corvette:



80 to 0 MPH

198 feet

218 feet

Road & Track

70 to 0 MPH

159 feet

173 feet

Car and Driver

60 to 0 MPH

110 feet

129 feet

Popular Science

30 to 0 MPH

28 feet

29 feet


Tires and Wheels Comparison

The 911’s optional 285/30R18 rear tires provide better handling because they have a lower 30 series profile (height to width ratio) which provides a stiffer sidewall than the Corvette Z06’s 35 series rear tires.

For better ride, handling and brake cooling the 911 offers optional 18 inch wheels. The Corvette’s largest wheels are only 17 inches in the front and 18 inches in the rear.

Suspension and Handling Comparison

The front and rear suspension of the 911 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 GT2 handles at 1.02 G’s, while the Corvette Coupe pulls only .89 G’s of cornering force in a Road & Track skidpad test.

The 911 Cabriolet handles at .93 G’s, while the Corvette Convertible pulls only .88 G’s of cornering force in a Motor Trend skidpad test.

The GT2 goes through Road & Track’s slalom 6.4 MPH faster than the Corvette Hardtop (68.7 vs. 62.3 MPH).

The 911 Cabriolet goes through Road & Track’s slalom 6 MPH faster than the Corvette Convertible (67.5 vs. 61.5 MPH).

For better maneuverability the 911’s turning circle is 7.5 feet tighter than the Corvette Z06’s (34.8 vs. 42.3 feet). The 911’s turning circle is 5.4 feet tighter than the Corvette’s (34.8 vs. 40.2 feet).

Chassis Comparison

The 911 is 5.2 inches shorter than the Corvette, making the 911 easier to handle, maneuver and park in tight spaces.

For excellent aerodynamics, the 911 has standard flush composite headlights. The Corvette has pop-up headlights which spoil its aerodynamic shape and create extra drag when raised.

As tested by Road & Track while at idle, the interior of the 911 Cabriolet is quieter than the Corvette Z06 (54 vs. 64 dB).

Passenger Space Comparison

The 911 has standard seating for 4 passengers; the Corvette can only carry 2.

The 911 has 18.6 cubic feet more passenger volume than the Corvette Coupe (70 vs. 51.4). The 911 Cabriolet has 12.3 cubic feet more passenger volume than the Corvette Convertible (64 vs. 51.7).

Ergonomics Comparison

The 911’s 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.

The 911’s optional rain-sensitive wipers adjust their speed to the amount of rainfall on the windshield. This allows the driver to concentrate on driving without constantly adjusting the wipers. The Corvette’s intermittent wipers have to be constantly adjusted.

To improve rear visibility by keeping the rear window clear, the 911 Coupe 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 911 offers available headlight washers to keep headlight output high. The Corvette doesn’t offer headlight washers.

When the 911 Turbo/GT2 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 Corvette’s mirror doesn’t automatically adjust for backing.

The 911’s optional heated front seats keep the driver and front passenger extremely comfortable in the winter. The Corvette doesn’t offer heated seats.

The 911’s standard automatic temperature control maintains the temperature you set, automatically controlling fan speed, vents and temperature to maintain a consistent, comfortable environment. The Corvette Z06 doesn’t offer automatic air conditioning.

A built-in pollen filter with a charcoal activated canister removes pollen, exhaust fumes and other pollutants from the 911’s passenger compartment. This helps prevent lung and/or sinus irritation, which can trigger allergies or asthma. The Corvette doesn’t offer a filtration system.

The 911’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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