Certified Benz & Beemer Compares 2006 Porsche 911 VS 2006 Mercedes SL Near Scottsdale, AZ

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2006 Porsche 911

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2006 Mercedes SL

Safety Comparison

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

Both the 911 and the SL Class have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

Warranty Comparison

The 911’s corrosion warranty is 6 years and unlimited miles longer than the SL Class’ (10/unlimited vs. 4/50,000).

Engine Comparison

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

Fuel Economy and Range Comparison

On the EPA test cycle the 911 gets better fuel mileage than the SL Class:


SL Class



18 city/26 hwy


911 S/Manual

18 city/26 hwy



19 city/26 hwy

16 city/24 hwy


911 S/Auto

18 city/25 hwy

14 city/20 hwy



911 4/Auto

18 city/26 hwy


911 4S/Auto

18 city/25 hwy


Brakes and Stopping Comparison

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


SL Class

Front Rotors

12.52 inches

12.28 inches

The 911’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs standard on the SL500 are solid, not vented.

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 SL Class doesn’t offer ceramic brake rotors.

The 911 stops much shorter than the SL Class:


SL Class

80 to 0 MPH

184 feet

205 feet

Road & Track

70 to 0 MPH

150 feet

178 feet

Car and Driver

60 to 0 MPH

106 feet

117 feet

Motor Trend

Chassis Comparison

The Porsche 911 may be more efficient, handle and accelerate better because it weighs about 1000 to 1050 pounds less than the Mercedes SL Class.

Passenger Space Comparison

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

The 911 has 6.2 cubic feet more passenger volume than the SL Class (64 vs. 57.8).

Ergonomics Comparison

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 SL Class does not have an oil pressure gauge.

The 911’s standard power mirror controls are mounted on the door for easy access. The SL Class’ standard power mirror controls are on the center console where they can’t be seen without the driver completely removing his eyes from the road.

Economic Advantages Comparison

The headlight lenses on the 911 are made of plastic to be lighter, more resistant to damage and less expensive to replace than the glass headlight lenses on the SL Class.

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