Certified Benz & Beemer Compares 2015 BMW M4 VS 2015 Mercedes C63 Near Phoenix, AZ

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2015 BMW M4

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VS

2015 Mercedes C63

Safety Comparison

The M4 offers an optional Side and Top View Cameras to allow the driver to see objects all around the vehicle on a screen. The C63 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 M4 and the C63 Coupe 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 and electronic stability systems to prevent skidding.

Warranty Comparison

The M4’s corrosion warranty is 8 years and unlimited miles longer than the C63 Coupe’s (12/unlimited vs. 4/50,000).

BMW pays for scheduled maintenance on the M4 for 4 years and 50,000 miles. BMW will pay for oil changes, lubrication and any other required maintenance. Mercedes doesn’t pay scheduled maintenance for the C63 Coupe.

There are over 12 percent more BMW dealers than there are Mercedes dealers, which makes it easier should you ever need service under the M4’s warranty.

Reliability Comparison

The battery on the M4 is in the trunk, which protects it from hot underhood temperatures that can degrade battery life. By keeping the M4’s battery 20 to 30 degrees cooler, its life is increased by years. The C63 Coupe’s battery is in the hot engine compartment.

J.D. Power and Associates’ 2014 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 8th in initial quality, above the industry average. With 7 more problems per 100 vehicles, Mercedes is ranked 13th.

Fuel Economy and Range Comparison

On the EPA test cycle the M4 Auto gets better fuel mileage than the C63 Coupe with its standard engine (17 city/24 hwy vs. 13 city/19 hwy).

In heavy traffic or at stoplights the M4’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 C63 Coupe doesn’t offer an automatic engine start/stop system.

Brakes and Stopping Comparison

For better stopping power the M4’s front brake rotors are larger than those on the C63 Coupe:

M4

C63 Coupe

Front Rotors

15.7 inches

14.2 inches

Rear Rotors

15 inches

13 inches

The M4 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 C63 Coupe doesn’t offer ceramic brake rotors.

The M4 stops much shorter than the C63 Coupe:

M4

C63 Coupe

70 to 0 MPH

151 feet

161 feet

Car and Driver

60 to 0 MPH

98 feet

103 feet

Motor Trend

Tires and Wheels Comparison

For better traction, the M4 has larger tires than the C63 Coupe (F:255/40R18 & R:275/40R18 vs. F:235/40R18 & R:255/35R18).

Suspension and Handling Comparison

For a smoother ride and more stable handling, the M4’s wheelbase is 1.8 inches longer than on the C63 Coupe (110.7 inches vs. 108.9 inches).

For better handling and stability, the track (width between the wheels) on the M4 is 1.2 inches wider in the front and 3.1 inches wider in the rear than on the C63 Coupe.

The M4 Coupe handles at 1.01 G’s, while the C63 Coupe pulls only .91 G’s of cornering force in a Motor Trend skidpad test.

The M4 Coupe executes Motor Trend’s “Figure Eight” maneuver 1 seconds quicker than the C63 Coupe (24.2 seconds @ .84 average G’s vs. 25.2 seconds @ .78 average G’s).

Chassis Comparison

The BMW M4 may be more efficient, handle and accelerate better because it weighs about 250 to 300 pounds less than the Mercedes C63 Coupe.

The M4’s standard power retractable hardtop allows a seamless transition from an open car, to a completely sealed coupe. The C63 Coupe doesn’t offer a retractable hardtop.

Passenger Space Comparison

Because it has more passenger and cargo room, the M4 Coupe is rated a Compact car by the EPA, while the C63 Coupe is rated a Subcompact.

The M4 Coupe has 2.8 inches more front headroom, .5 inches more front legroom, 1.3 inches more front shoulder room, .6 inches more rear headroom, .7 inches more rear legroom and 1.4 inches more rear shoulder room than the C63 Coupe.

Cargo Capacity Comparison

To make loading groceries and cargo easier when your hands are full, the M4’s available trunk can be opened just by kicking your foot under the back bumper, leaving your hands completely free. The C63 Coupe doesn’t offer a hands-free gesture to open its trunk, forcing you to put cargo down if your hands are full.

Ergonomics Comparison

The M4 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 C63 Coupe doesn’t offer a heads-up display.

Heated windshield washer nozzles are standard on the M4 to prevent washer fluid and nozzles from freezing and help continue to keep the windshield clear in sub-freezing temperatures. The C63 Coupe 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 M4 offers available headlight washers to keep headlight output high. The C63 Coupe doesn’t offer headlight washers.

On extremely cold Winter days, the M4’s optional heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The C63 Coupe doesn’t offer a heated steering wheel.

The M4’s 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 C63 Coupe doesn’t offer an automated parking system.

Recommendations Comparison

The 4 Series was chosen as one of Car and Driver’s “Top Ten” in 2014. The C63 Coupe has never been a Car and Driver “Top Ten” pick.

The M3/M4 was chosen as one of Automobile Magazine’s “All Stars” for 13 of the last 18 years. The C63 hasn’t been picked since 2009.

The M3/M4 was selected by Automobile Magazine as their 2006 Car of the Year. The C63 has never been chosen.

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