Certified Benz & Beemer Compares 2013 Mercedes Benz CL-Class VS 2013 Porsche 911 Near Scottsdale, AZ

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2013 Mercedes Benz CL-Class

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VS

2013 Porsche 911

Safety Comparison

© 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. RMDYB-MXOUX 162.241.241.35 2019/10/24

For enhanced safety, the front and rear seat shoulder belts of the Mercedes CL-Class have pretensioners to tighten the seatbelts and eliminate dangerous slack in the event of a collision. The Porsche 911 Turbo doesn’t offer pretensioners for the rear seat belts.

The CL-Class’ front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 911 Turbo doesn’t offer pre-crash pretensioners.

The CL-Class has standard front and rear seat side-impact airbags and head 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 911 Turbo doesn't offer rear-seat side-impact airbags, only ones for front seat occupants.

The CL-Class has standard NECK-PRO Front Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the NECK-PRO Front Head Restraints system moves the headrests forward to prevent neck and spine injuries. The 911 Turbo doesn’t offer a whiplash protection system.

The CL-Class offers optional PRE-SAFE Brake, 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 911 Turbo doesn't offer crash mitigation brakes.

An active infrared night vision system optional on the CL-Class helps the driver to more easily detect people, animals or other objects in front of the vehicle at night. Using an infrared camera and near-infrared lights to detect heat, the system then displays the image on a monitor in the dashboard and even aims one of the vehicle’s headlights in the direction of the person or object. The 911 Turbo doesn’t offer a night vision system.

The CL-Class’ 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 911 Turbo doesn’t offer a lane departure warning system.

The CL-Class has standard Parktronic™ to help warn the driver about vehicles, pedestrians or other obstacles behind or in front of their vehicle. The 911 Turbo doesn’t offer a front parking aid.

The CL-Class’ optional blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them and moves the vehicle back into its lane. The 911 Turbo doesn’t offer a system to reveal objects in the driver’s blind spots.

The CL-Class’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The 911 Turbo doesn’t offer a driver alert monitor.

The CL-Class has standard mbrace, which uses a global positioning satellite (GPS) receiver and a cellular system to remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The 911 Turbo doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.

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

The Mercedes CL-Class weighs 968 to 1479 pounds more than the Porsche 911 Turbo. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

Warranty Comparison

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There are over 55 percent more Mercedes dealers than there are Porsche dealers, which makes it much easier should you ever need service under the CL-Class’ warranty.

Engine Comparison

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The CL-Class has more powerful engines than the 911 Turbo:

Horsepower

Torque

CL550 4.7 turbo V8

429 HP

516 lbs.-ft.

CL600 5.5 turbo V12

510 HP

612 lbs.-ft.

CL63 5.5 turbo V8

536 HP

590 lbs.-ft.

CL63 5.5 turbo V8

563 HP

664 lbs.-ft.

CL65 6.0 turbo V12

621 HP

738 lbs.-ft.

911 Turbo 3.8 turbo 6 cyl.

500 HP

480 lbs.-ft.

911 Turbo S 3.8 turbo 6 cyl.

530 HP

516 lbs.-ft.

Fuel Economy and Range Comparison

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In heavy traffic or at stoplights the CL-Class’ 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 911 Turbo doesn’t offer an automatic engine start/stop system.

The CL-Class has 6.1 gallons more fuel capacity than the 911 Turbo Coupe’s standard fuel tank (23.8 vs. 17.7 gallons),for longer range between fill-ups.

Brakes and Stopping Comparison

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For better stopping power the CL63/CL65’s front brake rotors are larger than those on the 911 Turbo:

CL63/CL65

911 Turbo

911 Turbo

Front Rotors

15.4 inches

13.8 inches

15 inches

Rear Rotors

14.4 inches

13.8 inches

13.8 inches

The CL-Class stops shorter than the 911 Turbo:

CL-Class

911 Turbo

70 to 0 MPH

159 feet

162 feet

Car and Driver

Tires and Wheels Comparison

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For better traction, the CL-Class has larger standard tires than the 911 Turbo (255/45R18 vs. 235/35R19). The CL-Class’ optional front tires are larger than the largest tires available on the 911 Turbo (255/40R19 vs. 235/35R19).

For better ride, handling and brake cooling the CL-Class offers optional 20-inch wheels. The 911 Turbo’s largest wheels are only 19-inches.

The CL-Class has a standard space-saver spare tire so you can replace a flat tire and drive to have the flat repaired or replaced. A spare tire isn’t available on the 911 Turbo, it requires you to depend on roadside assistance and your vehicle will have to be towed.

Suspension and Handling Comparison

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The front and rear suspension of the CL-Class uses air springs for a smoother, controlled ride than the 911 Turbo, which uses coil springs. Air springs maintain proper ride height and ride more smoothly.

The CL-Class CL600/CL63/CL65 offers an available active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Porsche doesn’t offer an active suspension on the 911 Turbo.

The CL-Class has a standard automatic front and rear load leveling suspension to keep ride height level with a heavy load or when towing. The 911 Turbo doesn’t offer a load leveling suspension.

The CL-Class has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The 911 Turbo doesn’t offer variable-assist power steering.

The CL-Class 63/600/65’s drift compensation steering can automatically compensate for road conditions which would cause the vehicle to drift from side to side, helping the driver to keep the vehicle straight more easily. The 911 Turbo doesn’t offer drift compensation steering.

For a smoother ride and more stable handling, the CL-Class’ wheelbase is 23.8 inches longer than on the 911 Turbo (116.3 inches vs. 92.5 inches).

For better handling and stability, the track (width between the wheels) on the CL-Class is 4.5 inches wider in the front and 3.3 inches wider in the rear than the average track on the 911 Turbo.

The CL-Class’ front to rear weight distribution is more even (56% to 44%) than the 911 Turbo’s (39.1% to 60.9%). This gives the CL-Class more stable handling and braking.

Chassis Comparison

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The design of the Mercedes CL-Class amounts to more than styling. The CL-Class has an aerodynamic coefficient of drag of .27 Cd. That is lower than the 911 Turbo (.3 to .32). A more efficient exterior helps the CL-Class go faster and keeps the interior quieter. It also helps the CL-Class get better fuel mileage.

As tested by Road & Track, the interior of the CL550 4MATIC is quieter than the 911 Turbo Coupe:

CL-Class

911 Turbo

At idle

47 dB

58 dB

Full-Throttle

73 dB

88 dB

50 MPH Cruising

77 dB

80 dB

70 MPH Cruising

70 dB

82 dB

Passenger Space Comparison

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Because it has more passenger and cargo room, the CL-Class is rated a Mid-size car by the EPA, while the 911 Turbo Coupe is rated a Minicompact.

The CL-Class has 40.2 cubic feet more passenger volume than the 911 Turbo (104.2 vs. 64).

Cargo Capacity Comparison

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The CL-Class has a much larger trunk than the 911 Turbo Coupe (13.5 vs. 4.8 cubic feet).

With its coupe body style, valet key and remote trunk release lockout, the CL-Class offers cargo security. The 911 Turbo’s non-lockable folding seat and non-lockable remote release defeat cargo security.

Ergonomics Comparison

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Unlike the driver-only memory seat and mirrors optional at extra cost in the 911 Turbo, the CL-Class has standard driver and passenger memory, so that when drivers switch, the memory setting adjusts the driver’s seat, steering wheel position, outside mirror angle, climate settings and radio stations and the front passenger seat also adjusts to the new passenger’s preset preferences.

The CL-Class’ standard easy entry system raises the steering wheel and glides the driver’s seat back, making it easier for the driver to get in and out. The 911 Turbo doesn’t offer an easy entry system.

The CL-Class’ standard power windows have a locking feature to keep children in the rear seat from operating them. Porsche does not offer a locking feature on the 911 Turbo’s standard power windows.

The CL-Class’ front and rear power windows all open or close fully with one touch of the switches, making it more convenient at drive-up windows and toll booths, or when talking with someone outside the car. The 911 Turbo’s rear power window switches have to be held the entire time to open or close them fully.

If the windows are left down on the CL-Class the driver can raise them all using the key in the outside lock cylinder or the keyless remote (remote must be aimed at door sensor); on a hot day the driver can lower the windows. The driver of the 911 Turbo can’t use the remote to operate the windows.

Heated windshield washer fluid is standard on the CL-Class to defrost the washer nozzles and quickly clear ice and frost from the windshield without scraping. The 911 Turbo doesn’t offer heated windshield washer fluid. It’s standard heated washer nozzles will defrost the washer fluid but not the windshield.

The CL-Class has a standard automatic headlight on/off feature. When the ignition is on, the headlights automatically turn on at dusk and off after dawn. The 911 Turbo doesn’t offer automatic headlights.

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

A power rear sunshade is standard in the CL-Class to help block heat and glare for the rear passengers. The 911 Turbo doesn’t offer a rear sunshade.

The CL-Class’ standard air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. Air conditioned front seats costs extra on the 911 Turbo.

The CL-Class’ standard dual zone air conditioning allows the driver and front passenger to choose two completely different temperatures so people with different temperature preferences won’t have to compromise. This makes both the driver and front passenger as comfortable as possible. The 911 Turbo doesn’t offer dual zone air conditioning.

For greater rear passenger comfort, the CL-Class has standard rear a/c vents to keep rear occupants more comfortable. The 911 Turbo doesn’t offer rear vents.

To keep a safe, consistent following distance, the CL-Class offers an optional Distronic, 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 911 Turbo doesn’t offer an adaptive cruise control.

Bluetooth wireless connectivity is standard on the CL-Class, connecting the driver and passenger’s cell phones to the vehicle systems. This allows them to use the vehicle’s stereo and hand controls to place calls safely and easily. Porsche doesn’t offer wireless connectivity on the 911 Turbo.

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