2020 Porsche 911 vs. 2019 Chevrolet Corvette

Detailed Review, Specifications & Comparison

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Safety

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The 911 has standard Warn and Brake Assist, 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 Corvette doesn't offer collision warning or crash mitigation brakes.

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

A passive infrared night vision system optional on the 911 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 Corvette doesn’t offer a night vision system.

The 911’s optional lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. The Corvette doesn’t offer a lane departure warning system.

The 911 offers an optional Surround View to allow the driver to see objects all around the vehicle on a screen. The Corvette only offers a rear monitor.

Both the 911 and the Corvette have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.

Warranty

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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 6 years and unlimited miles longer than the Corvette’s (12/unlimited vs. 6/100,000).

Reliability

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/11/21

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’ 2019 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Chevrolet vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 7 more problems per 100 vehicles, Chevrolet is ranked fourth.

From surveys of all its subscribers, Consumer Reports’ December 2018 Auto Issue reports that Porsche vehicles are more reliable than Chevrolet vehicles. Consumer Reports ranks Porsche 12 places higher in reliability than Chevrolet.

Engine

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As tested in Car and Driver the 911 S is faster than the Corvette ZR1 (automatics tested):

911

Corvette

Zero to 60 MPH

3 sec

3.1 sec

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.

Fuel Economy and Range

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/11/21

On the EPA test cycle the 911 Coupe gets better fuel mileage than the Corvette:

MPG

911

RWD

Auto

S 3.0 turbo 6-cyl.

18 city/24 hwy

AWD

Auto

4S 3.0 turbo 6-cyl.

18 city/23 hwy

Corvette

RWD

Manual

6.2 OHV V8

16 city/25 hwy

Z06 6.2 supercharged V8

15 city/22 hwy

ZR1 6.2 supercharged V8

13 city/19 hwy

Auto

6.2 OHV V8

15 city/25 hwy

Z06 6.2 supercharged V8

14 city/23 hwy

ZR1 6.2 supercharged V8

12 city/20 hwy

On the EPA test cycle the 911 Cabriolet gets better fuel mileage than the Corvette:

MPG

911

RWD

Auto

S 3.0 turbo 6-cyl.

18 city/23 hwy

AWD

Auto

4S 3.0 turbo 6-cyl.

18 city/23 hwy

Corvette

RWD

Manual

6.2 OHV V8

16 city/25 hwy

Z06 6.2 supercharged V8

15 city/22 hwy

ZR1 6.2 supercharged V8

13 city/19 hwy

Auto

6.2 OHV V8

15 city/25 hwy

Z06 6.2 supercharged V8

14 city/23 hwy

ZR1 6.2 supercharged V8

12 city/20 hwy

In heavy traffic or at stoplights the 911’s engine automatically turns off when the vehicle is stopped, saving fuel and reducing pollution. The engine is automatically restarted when the driver gets ready to move again. (Start/Stop isn’t accounted in present EPA fuel mileage tests.) The Corvette doesn’t offer an automatic engine start/stop system.

Transmission and Drivetrain

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The 911 offers an optional sequential manual gearbox (SMG). With no clutch pedal to worry about and a fully automatic mode, an SMG is much more efficient than a conventional automatic but just as easy to drive. The Corvette doesn’t offer an SMG.

All wheel drive, available in the 911, provides the best traction for acceleration in wet, dry, and icy conditions. In corners, all wheel drive allows both outside wheels to provide power, balancing the car. This allows for better handling. The Chevrolet Corvette is not available with all wheel drive.

Brakes and Stopping

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For better stopping power the 911’s front brake rotors are larger than those on the Corvette:

911

911 S

911 opt.

Corvette

Corvette Z53

Corvette ZR1

Front Rotors

13 inches

13.8 inches

16.1 inches

12.6 inches

13.6 inches

15.5 inches

Rear Rotors

13 inches

13.8 inches

15.4 inches

13.3 inches

13.3 inches

15.3 inches

The 911 stops shorter than the Corvette:

911

Corvette

70 to 0 MPH

140 feet

149 feet

Car and Driver

Tires and Wheels

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For better traction and acceleration, the 911 has larger standard rear tires than the Corvette (295/35R20 vs. 285/30R20).

For better ride, handling and brake cooling the 911 offers optional 20-inch front and 21-inch rear wheels. The Corvette’s largest wheels are only 19-inches in the front and 20-inches in the rear.

Suspension and Handling

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The 911 S offers active sway bars, which help keep it flat and controlled during cornering, but disconnect at lower speeds to smooth the ride and offer greater off-road suspension articulation. This helps keep the tires glued to the road on-road and off. The Corvette doesn’t offer an active sway bar system.

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.

For better maneuverability, the 911’s turning circle is .9 feet tighter than the Corvette’s (36.8 feet vs. 37.7 feet).

Chassis

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The front grille of the 911 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Corvette doesn’t offer active grille shutters.

As tested by Car and Driver, the interior of the 911 S Coupe is quieter than the Corvette ZR1 Coupe:

911

Corvette

At idle

49 dB

57 dB

Full-Throttle

90 dB

99 dB

70 MPH Cruising

69 dB

76 dB

Passenger Space

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/11/21

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

The 911 has 21 cubic feet more passenger volume than the Corvette (73 vs. 52).

Servicing Ease

© 1999 - 2019 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2019/11/21

J.D. Power and Associates surveys of service recipients show that Porsche service is better than Chevrolet. J.D. Power ranks Porsche first in service department satisfaction. With a 48% lower rating, Chevrolet is ranked 13th.

Ergonomics

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

To improve rear visibility by keeping the rear window clear, the 911 offers an optional rear wiper. The Corvette doesn’t offer a rear wiper.

While driving with high beams on, sensitive light sensors available for the 911 detect other vehicles which could be blinded and automatically switch to low beams. The Corvette doesn’t offer automatic dimming high beams.

To help drivers see further while navigating curves, the 911 offers optional adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Corvette doesn’t offer cornering lights.

The 911’s power mirror controls are mounted on the armrest for easy access. The Corvette’s power mirror controls are on the dash where they are possibly hidden by the steering wheel and are awkward to manipulate.

On extremely cold winter days, the 911’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Corvette doesn’t offer a heated steering wheel.

To keep a safe, consistent following distance, the 911 offers an optional Adaptive Cruise Control, which alters the speed of the vehicle without driver intervention. This allows the driver to use cruise control more safely without constantly having to disengage it when approaching slower traffic. The Corvette doesn’t offer an adaptive cruise control.

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