Certified Benz & Beemer Compares 2012 BMW 6 SERIES VS 2012 Mercedes C-Class Near Phoenix, AZ

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2012 BMW 6 SERIES

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VS

2012 Mercedes C-Class

Safety Comparison

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The 650i offers all wheel drive to maximize traction under poor conditions, especially in ice and snow. The C-Class Coupe 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 C-Class Coupe doesn’t offer a night vision system.

The 6 Series offers an optional Side and Top View Cameras to allow the driver to see objects all around the vehicle on a screen. The C-Class Coupe only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.

Both the 6 Series and the C-Class Coupe have standard driver and passenger frontal airbags, front side-impact airbags, head airbags, front seatbelt pretensioners, plastic fuel tanks, four wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

The BMW 6 Series weighs 439 to 1112 pounds more than the Mercedes C-Class Coupe. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

Warranty Comparison

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

BMW pays for scheduled maintenance on the 6 Series for 4 years and 50,000 miles. BMW will pay for oil changes, tire rotation, lubrication and any other scheduled maintenance. Mercedes doesn’t pay scheduled maintenance for the C-Class Coupe.

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

Reliability Comparison

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To reliably start during all conditions and help handle large electrical loads, the 6 Series has a standard 900 amp battery. The C-Class Coupe’s 700 amp battery isn’t as powerful.

The battery on the 6 Series is in the trunk, which protects it from hot underhood temperatures which can degrade battery life. By keeping the 6 Series’ battery 20 to 30 degrees cooler, its life is increased by years. The C-Class Coupe’s battery is in the hot engine compartment.

Engine Comparison

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The 640i’s standard 3.0 turbo 6 cyl. produces 114 more horsepower (315 vs. 201) and 103 lbs.-ft. more torque (332 vs. 229) than the C250 Coupe’s standard 1.8 turbo 4 cyl. The 640i’s 3.0 turbo 6 cyl. produces 13 more horsepower (315 vs. 302) and 59 lbs.-ft. more torque (332 vs. 273) than the C350 Coupe’s standard 3.5 DOHC V6. The 650i’s standard 4.4 turbo V8 produces 98 more horsepower (400 vs. 302) and 177 lbs.-ft. more torque (450 vs. 273) than the C350 Coupe’s standard 3.5 DOHC V6.

For more instantaneous acceleration and better engine flexibility in any gear, the 6 Series’ engines produce their peak torque at lower RPM’s than the C-Class Coupe:

Torque

640i 3.0 turbo 6 cyl.

1400 RPM

650i 4.4 turbo V8

1750 RPM

C250 Coupe 1.8 turbo 4 cyl.

2000 RPM

C350 Coupe 3.5 DOHC V6

3500 RPM

Fuel Economy and Range Comparison

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On the EPA test cycle the 640i RWD gets better fuel mileage than the C350 Coupe (21 city/31 hwy vs. 19 city/28 hwy).

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

In heavy traffic or at stoplights the 6 Series 640i’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 C-Class Coupe doesn’t offer an automatic engine start/stop system.

The 6 Series has 2.9 gallons more fuel capacity than the C-Class Coupe 250’s standard fuel tank (18.5 vs. 15.6 gallons), for longer range between fill-ups. The 6 Series has 1.1 gallons more fuel capacity than the C-Class Coupe 350’s standard fuel tank (18.5 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 C-Class Coupe:

6 Series

C250 Coupe

C350 Coupe

Front Rotors

13.7 inches

11.6 inches

12.7 inches

Rear Rotors

13.6 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 C-Class Coupe (245/40R19 vs. 225/45R17). The 6 Series’ optional tires are larger than the largest tires available on the C-Class Coupe (F:245/35R20 & R:275/30R20 vs. F:225/40R18 & R:255/35R18).

The 6 Series’ optional 245/35R20 front and 275/30R20 rear tires provide better handling because they have a lower 35 series front and 30 series rear profile (height to width ratio) that provides a stiffer sidewall than the C-Class Coupe’s optional 40 series front and 35 series rear tires.

For better ride, handling and brake cooling the 640i has standard 18 inch wheels. Smaller 17 inch wheels are standard on the C-Class Coupe. The 6 Series’ optional 20 inch wheels are larger than the 18 inch wheels optional on the C-Class Coupe.

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 C-Class Coupe 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 C-Class Coupe.

For a smoother ride and more stable handling, the 6 Series’ wheelbase is 3.7 inches longer than on the C-Class Coupe (112.4 inches vs. 108.7 inches).

For better handling and stability, the track (width between the wheels) on the 6 Series is 2 inches wider in the front and 4.1 inches wider in the rear than on the C-Class Coupe.

Passenger Space Comparison

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Because it has more passenger and cargo room, the 6 Series Coupe is rated a Compact car by the EPA, while the C-Class Coupe is rated a Subcompact.

The 6 Series has 3.3 inches more front headroom, 2.9 inches more front shoulder room and 1 inch more rear headroom than the C-Class Coupe.

Cargo Capacity Comparison

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The 6 Series Coupe has a much larger trunk than the C-Class Coupe (16.2 vs. 11.7 cubic feet).

Ergonomics Comparison

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Unlike the driver-only memory system in the C-Class Coupe, the 6 Series offers an optional 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 6 Series’ standard easy entry system raises the steering wheel, making it easier for the driver to get in and out. An easy entry system costs extra on the C-Class Coupe.

The 6 Series offers an optional heads-up display which projects speed and other key instrumentation readouts onto the windshield, allowing drivers to view information without diverting their eyes from the road. The C-Class Coupe 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 C-Class Coupe doesn’t offer heated windshield washer nozzles.

The 6 Series’ optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The C-Class Coupe doesn’t offer air conditioned front seats.

To keep a safe, consistent following distance, the 6 Series Automatic offers an optional Active Cruise Control, 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 C-Class Coupe doesn’t offer an adaptive cruise control.

Optional BMW Apps for the 6 Series allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, tagging songs to buy them later, following twitter accounts and other online activities without taking their eyes off the road or their hands from the wheel. The C-Class Coupe doesn’t offer factory integrated smartphone program access.

The 6 Series’ optional Parking Assistant can parallel park or back into a parking spot by itself, with the driver only controlling speed with the brake pedal. The C-Class Coupe doesn’t offer an automated parking system.

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