Certified Benz & Beemer Compares 2017 BMW 6 SERIES VS 2017 Mercedes E-Class Near Scottsdale, AZ

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2017 BMW 6 SERIES

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VS

2017 Mercedes E-Class

Safety Comparison

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The 6 Series offers all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The E-Class Cabriolet doesn’t offer all-wheel drive.

A passive infrared night vision system optional on the 6 Series 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 E-Class Cabriolet doesn’t offer a night vision system.

Both the 6 Series and the E-Class Cabriolet have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, plastic fuel tanks, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available crash mitigating brakes, lane departure warning systems, blind spot warning systems and around view monitors.

Warranty Comparison

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The 6 Series’ corrosion warranty is 8 years and unlimited miles longer than the E-Class Cabriolet’s (12/unlimited vs. 4/50,000).

BMW pays for scheduled maintenance on the 6 Series for 3 years and 36,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the E-Class Cabriolet.

There are over 12 percent more BMW dealers than there are Mercedes dealers, which makes it easier should you ever need service under the 6 Series’ warranty.

Reliability Comparison

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J.D. Power and Associates’ 2016 Initial Quality Study of new car owners surveyed provide the statistics that show that BMW vehicles are better in initial quality than Mercedes vehicles. J.D. Power ranks BMW fifth in initial quality, above the industry average. With 17 more problems per 100 vehicles, Mercedes is ranked 15th, below the industry average.

Engine Comparison

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The 6 Series has more powerful engines than the E-Class Cabriolet:

Horsepower

Torque

650i 4.4 turbo V8

445 HP

480 lbs.-ft.

M6 4.4 turbo V8

560 HP

500 lbs.-ft.

M6 Competition 4.4 turbo V8

591 HP

516 lbs.-ft.

E400 Cabriolet 3.0 turbo V6

329 HP

354 lbs.-ft.

E550 Cabriolet 4.7 turbo V8

402 HP

443 lbs.-ft.

Fuel Economy and Range Comparison

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Regenerative brakes improve the 6 Series’ fuel efficiency by converting inertia back into energy instead of wasting it. The E-Class Cabriolet doesn’t offer a regenerative braking system.

The 6 Series’ standard fuel tank has 1.1 gallons more fuel capacity than the E-Class Cabriolet (18.5 vs. 17.4 gallons), for longer range between fill-ups. The 6 Series M6’s standard fuel tank has 3.7 gallons more fuel capacity than the E-Class Cabriolet (21.1 vs. 17.4 gallons).

Brakes and Stopping Comparison

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For better stopping power the 6 Series’ brake rotors are larger than those on the E-Class Cabriolet:

640i/650i

M6 Carbon Brakes

E400 Cabriolet

E550 Cabriolet

Front Rotors

13.7 inches

16.1 inches

12.7 inches

14.2 inches

Rear Rotors

13.6 inches

15.6 inches

11.8 inches

11.8 inches

Tires and Wheels Comparison

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For better traction, the 6 Series has larger standard tires than the E-Class Cabriolet (245/45R18 vs. 235/40R18). The M6’s tires are larger than the largest tires available on the E-Class Cabriolet (F:265/40R19 & R:295/35R19 vs. F:235/40R18 & R:255/35R18).

For better ride, handling and brake cooling the 6 Series offers optional 20-inch wheels. The E-Class Cabriolet’s largest wheels are only 19-inches.

Changing a flat tire near traffic can be dangerous and inconvenient. The run-flat tires standard on the 6 Series can be driven up to 50 miles without any air pressure, allowing you to drive to a service station for a repair. The E-Class Cabriolet doesn’t offer run-flat tires.

Suspension and Handling Comparison

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The 6 Series offers an available active suspension system, which counteracts cornering forces actively, limiting body roll and improving handling and stability. Mercedes doesn’t offer an active suspension on the E-Class Cabriolet.

For a smoother ride and more stable handling, the M6’s wheelbase is 3.5 inches longer than on the E-Class Cabriolet (112.2 inches vs. 108.7 inches).

For better handling and stability, the average track (width between the wheels) on the 6 Series is 2.8 inches wider in the front and 3.9 inches wider in the rear than the track on the E-Class Cabriolet.

Passenger Space Comparison

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The 6 Series Convertible has 8 cubic feet more passenger volume than the E-Class Cabriolet (88 vs. 80).

Cargo Capacity Comparison

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The 6 Series Convertible has a much larger trunk with its top down than the E-Class Cabriolet with its top down (10.6 vs. 8.8 cubic feet). The 6 Series Convertible has a larger trunk with its top up than the E-Class Cabriolet with its top up (12.4 vs. 11.5 cubic feet).

Ergonomics Comparison

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The 6 Series offers an optional heads-up display which projects speed and other key instrumentation readouts in front of the driver’s line of sight, allowing drivers to view information without diverting their eyes from the road. The E-Class Cabriolet doesn’t offer a heads-up display.

Heated windshield washer nozzles are standard on the 6 Series to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The E-Class Cabriolet doesn’t offer heated windshield washer nozzles.

In poor weather, headlights can lose their effectiveness as grime builds up on their lenses. This can reduce visibility without the driver realizing. The 6 Series has standard headlight washers to keep headlight output high. The E-Class Cabriolet doesn’t offer headlight washers.

Economic Advantages Comparison

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According to The Car Book by Jack Gillis, the 6 Series is less expensive to operate than the E-Class Cabriolet because typical repairs cost much less on the 6 Series than the E-Class Cabriolet, including $34 less for a water pump, $383 less for an alternator, $68 less for a starter and $11 less for fuel injection.

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