Certified Benz & Beemer Compares 2009 Porsche 911 VS 2009 Aston Martin Near Phoenix, AZ

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2009 Porsche 911

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VS

2009 Aston Martin

Safety Comparison

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For enhanced safety, the front seat shoulder belts of the Porsche 911 Coupe 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 Aston Martin DB9 doesn’t offer height adjustable seat belts.

The 911 has standard head airbag curtains which act as a forgiving barrier between the driver and front 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. The DB9 doesn't offer side airbag protection for the head.

The 911 offers all wheel drive to maximize traction under poor conditions, especially in ice and snow. The DB9 doesn’t offer all wheel drive.

The Porsche 911 has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The DB9 doesn’t offer Daytime Running Lights.

Both the 911 and the DB9 have standard driver and passenger frontal airbags, front side-impact airbags, front seatbelt pretensioners, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

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The 911 comes with a full 4 year/50,000 mile basic warranty, which covers the entire car. The DB9’s 3 year basic warranty expires 1 year sooner.

The 911 comes with free roadside assistance for 4 years 50,000 miles. Porsche will send help if you run out of gas, need a jump start, lock your keys in or need any assistance on the road. Aston Martin doesn’t give free roadside assistance for the DB9.

There are almost 17 times as many Porsche dealers as there are Aston Martin dealers, which makes it much easier to get service under the 911’s warranty.

Engine Comparison

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The 911 Turbo’s standard 3.6 turbo 6 cyl. produces 10 more horsepower (480 vs. 470) and 17 lbs.-ft. more torque (460 vs. 443) than the DB9’s 5.9 DOHC V12. The 911 GT2 Coupe’s standard 3.6 turbo 6 cyl. produces 60 more horsepower (530 vs. 470) and 17 lbs.-ft. more torque (460 vs. 443) than the DB9’s 5.9 DOHC V12.

As tested in Road & Track the 911 Turbo is faster than the Aston Martin DB9 (automatics tested):

911

DB9

Zero to 30 MPH

1.1 sec

1.8 sec

Zero to 60 MPH

3.3 sec

4.8 sec

Zero to 80 MPH

5.3 sec

7.9 sec

Zero to 100 MPH

8.3 sec

11 sec

Quarter Mile

11.6 sec

13.2 sec

Speed in 1/4 Mile

118.3 MPH

110 MPH

For more instantaneous acceleration and better engine flexibility in any gear, the 911’s engines produce their peak torque at lower RPM’s than the DB9:

Torque

911 3.6 DOHC 6 cyl.

4400 RPM

911 S 3.8 DOHC 6 cyl.

4400 RPM

911 Turbo 3.6 turbo 6 cyl.

1950 RPM

911 GT2 Coupe 3.6 turbo 6 cyl.

1950 RPM

DB9 5.9 DOHC V12

5000 RPM

The flat cylinder configuration of the boxer engine in the 911 lowers its center of gravity, enhancing handling stability. The DB9 doesn’t offer a boxer engine configuration.

Fuel Economy and Range Comparison

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On the EPA test cycle the 911 GT2 gets better fuel mileage than the DB9 Manual (16 city/23 hwy vs. 11 city/17 hwy).

The 911 GT2’s standard fuel tank has 2.7 gallons more fuel capacity than the DB9 (23.8 vs. 21.1 gallons).

Brakes and Stopping Comparison

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For better stopping power the 911 Turbo/GT3/GT2’s front brake rotors are larger than those on the DB9:

911 Turbo/GT3/GT2

DB9

Front Rotors

14.96 inches

14 inches

Rear Rotors

13.78 inches

13 inches

The 911 Turbo/GT3/GT2’s brakes have 16% more swept area (the area covered by the brake pads) than the DB9 (740 vs. 637 square inches).

The 911 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 DB9 doesn’t offer ceramic brake rotors.

The 911 stops much shorter than the DB9:

911

DB9

80 to 0 MPH

184 feet

231 feet

Road & Track

70 to 0 MPH

145 feet

170 feet

Car and Driver

60 to 0 MPH

98 feet

112 feet

AutoWeek

Tires and Wheels Comparison

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The 911’s optional 235/35R19 front and 295/30R19 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) which provides a stiffer sidewall than the DB9’s 40 series front and 35 series rear tires.

Suspension and Handling Comparison

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The 911 has standard front and rear gas-charged shocks for better control over choppy roads. The DB9’s suspension doesn’t offer gas-charged shocks.

The 911 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 DB9’s suspension doesn’t offer adjustable shock absorbers.

The 911 GT3 handles at 1.05 G’s, while the DB9 Coupe pulls only .90 G’s of cornering force in a Car and Driver skidpad test.

The 911 GT2 Coupe goes through Road & Track’s slalom 10.4 MPH faster than the DB9 Coupe (75.9 vs. 65.5 MPH).

For better maneuverability, the 911’s turning circle is 3.4 feet tighter than the DB9’s (36 feet vs. 39.4 feet).

Chassis Comparison

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The Porsche 911 may be more efficient, handle and accelerate better because it weighs about 250 to 850 pounds less than the Aston Martin DB9.

The 911 is 9.9 inches shorter than the DB9, making the 911 easier to handle, maneuver and park in tight spaces. The 911 is 9.9 inches shorter than the DB9.

As tested by AutoWeek, the interior of the 911 Turbo Coupe Carrera 4 is quieter than the DB9 Coupe:

911

DB9

At idle

54 dB

54 dB

Full-Throttle

79 dB

82 dB

60 MPH Cruising

67 dB

68 dB

Cargo Capacity Comparison

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The 911 Coupe has a much larger trunk than the DB9 Coupe (11.7 vs. 6.1 cubic feet).

Ergonomics Comparison

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The 911’s instruments include an oil pressure gauge and a temperature gauge – which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The DB9 does not have an oil pressure gauge.

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 DB9 doesn’t offer cornering lights.

The 911 offers optional automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The DB9 has an automatic rear view mirror, but its side mirrors don’t dim.

The 911’s optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The DB9 doesn’t offer air conditioned front seats.

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