Certified Benz & Beemer Compares 2013 Porsche BOXSTER VS 2013 Audi S5 Near Scottsdale, AZ

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2013 Porsche BOXSTER

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2013 Audi S5

Safety Comparison

The Boxster offers optional parking sensors to help warn the driver about vehicles, pedestrians or other obstacles behind or, optionally, in front of the vehicle. The S5 doesn’t offer a front parking aid.

Both the Boxster and the S5 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Reliability Comparison

To reliably power the ignition and other systems and to recharge the battery, the Boxster has a standard 175 amp alternator. The S5’s 150 amp alternator isn’t as powerful.

J.D. Power and Associates’ 2012 Initial Quality Study of new car owners surveyed provide the statistics that show that Porsche vehicles are better in initial quality than Audi vehicles. J.D. Power ranks Porsche second in initial quality, above the industry average. With 30 more problems per 100 vehicles, Audi is ranked 16th, below the industry average.

J.D. Power and Associates’ 2012 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Porsche vehicles are more reliable than Audi vehicles. J.D. Power ranks Porsche second in reliability, above the industry average. With 50 more problems per 100 vehicles, Audi is ranked 15th.

Engine Comparison

The flat cylinder configuration of the boxer engine in the Boxster lowers its center of gravity, enhancing handling stability. The S5 doesn’t offer a boxer engine configuration.

Fuel Economy and Range Comparison

On the EPA test cycle the Boxster Auto with its standard engine gets better fuel mileage than the S5 Cabriolet (22 city/32 hwy vs. 18 city/26 hwy). The Boxster S Auto gets better fuel mileage than the S5 Cabriolet (21 city/30 hwy vs. 18 city/26 hwy).

Regenerative brakes improve the Boxster’s fuel efficiency by converting inertia back into energy instead of wasting it. The S5 doesn’t offer a regenerative braking system.

In heavy traffic or at stoplights the Boxster’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 S5 doesn’t offer an automatic engine start/stop system.

Brakes and Stopping Comparison

For better stopping power the Boxster’s front brake rotors are larger than those on the S5:



Front Rotors

13.8 inches

13.6 inches

Rear Rotors

13.8 inches

13 inches

The Boxster 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 S5 doesn’t offer ceramic brake rotors.

The Boxster stops much shorter than the S5:



80 to 0 MPH

201 feet

204 feet

Road & Track

70 to 0 MPH

147 feet

161 feet

Car and Driver

60 to 0 MPH

101 feet

105 feet

Motor Trend

Tires and Wheels Comparison

For better traction and acceleration, the Boxster has larger rear tires than the S5 (265/45R18 vs. 245/40R18). The Boxster’s rear tires are larger than the largest rear tires available on the S5 (265/45R18 vs. 255/35R19).

For better ride, handling and brake cooling the Boxster offers optional 20-inch wheels. The S5’s largest wheels are only 19-inches.

Suspension and Handling Comparison

The Boxster’s front to rear weight distribution is more even (45% to 55%) than the S5’s (57.7% to 42.3%). This gives the Boxster more stable handling and braking.

The Boxster S handles at .99 G’s, while the S5 Cabriolet pulls only .91 G’s of cornering force in a Car and Driver skidpad test.

For better maneuverability, the Boxster’s turning circle is 1.4 feet tighter than the S5’s (36 feet vs. 37.4 feet).

Chassis Comparison

The Porsche Boxster may be more efficient, handle and accelerate better because it weighs about 950 to 1350 pounds less than the Audi S5.

The Boxster is 10.5 inches shorter than the S5, making the Boxster easier to handle, maneuver and park in tight spaces.

Ergonomics Comparison

The Boxster’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 S5 does not have an oil pressure gauge.

In case of a sudden change of weather, the Boxster has a standard remote convertible top which can be raised from a distance to protect the interior of the vehicle from damage. The S5 doesn’t offer a remote top, so the driver will have to run to the car, get in, turn the ignition on and raise the top to prevent the interior from being damaged.

When the Boxster with available tilt-down mirrors 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 S5’s mirror doesn’t automatically adjust for backing.

Economic Advantages Comparison

Insurance will cost less for the Boxster owner. Kiplinger’s estimates that insurance for the Boxster will cost $305 to $642 less than the S5 each year.

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