Certified Benz & Beemer Compares 2017 BMW i3 VS 2017 Mercedes B-Class Near Phoenix, AZ

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2017 BMW i3

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2017 Mercedes B-Class

Safety Comparison

Both the i3 and the B-Class Electric Drive have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, available crash mitigating brakes and rearview cameras.

Warranty Comparison

The i3’s corrosion warranty is 7 years longer than the B-Class Electric Drive’s (12 vs. 5 years).

BMW pays for scheduled maintenance on the i3 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 B-Class Electric Drive.

Reliability Comparison

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

As tested in Car and Driver the BMW i3 is faster than the Mercedes B250e:




Zero to 60 MPH

6.5 sec

6.8 sec

5 to 60 MPH Rolling Start

6.5 sec

6.7 sec

Quarter Mile

15.3 sec

15.4 sec

Fuel Economy and Range Comparison

On the EPA test cycle the i3 gets better fuel mileage than the B250e (MPGe):



i3 60Ah

i3 94Ah

i3 REx




137 city/111 hwy

129 city/106 hwy

118 city/103 hwy

85 city/82 hwy

The i3 94Ah’s maximum driving range in pure electric mode is 114 miles, 31% further than the B250e’s 87-mile range.

The i3 REx’s maximum driving range in pure electric mode is 97 miles, 11% further than the B250e’s 87-mile range. After it exhausts its pure electric range, the i3 REx can then continue for 86 more miles on its internal combustion engine, while the B-Class Electric Drive has to recharge for 3 hours and 30 minutes.

Brakes and Stopping Comparison

The i3’s standard front and rear disc brakes are vented to help dissipate heat for shorter stops with less fading. The rear discs on the B-Class Electric Drive are solid, not vented.

The i3 stops much shorter than the B-Class Electric Drive:



B-Class Electric Drive


70 to 0 MPH

163 feet

188 feet

Car and Driver

60 to 0 MPH

108 feet

124 feet

Motor Trend

Tires and Wheels Comparison

For better ride, handling and brake cooling the i3 has standard 19-inch wheels. Only 17-inch wheels are available on the B-Class Electric Drive. The i3 offers optional 20-inch wheels.

Suspension and Handling Comparison

For better handling and stability, the track (width between the wheels) on the i3 is 1.2 inches wider in the front and 1.6 inches wider in the rear than on the B-Class Electric Drive.

The i3’s front to rear weight distribution is more even (48.5% to 51.5%) than the B-Class Electric Drive’s (58% to 42%). This gives the i3 more stable handling and braking.

For better maneuverability, the i3’s turning circle is 3.7 feet tighter than the B-Class Electric Drive’s (32.3 feet vs. 36 feet).

Chassis Comparison

The BMW i3 may be more efficient, handle and accelerate better because it weighs about 700 to 1050 pounds less than the Mercedes B-Class Electric Drive.

The i3 is 1 foot, 2.1 inches shorter than the B-Class Electric Drive, making the i3 easier to handle, maneuver and park in tight spaces.

Ergonomics Comparison

To help drivers see further while navigating curves, the i3 has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The B-Class Electric Drive doesn’t offer cornering lights.

To keep a safe, consistent following distance, the i3 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 B-Class Electric Drive doesn’t offer an adaptive cruise control.

Recommendations Comparison

Car and Driver performed a comparison test in its September 2014 issue and the BMW i3 won out over the Mercedes B-Class Electric Drive Station Wagon.

The i3 is ranked first in its class and received the 2015 “Total Quality Award.” The B-Class Electric Drive is not ranked.

The BMW i3 outsold the Mercedes B-Class Electric Drive by almost 13 to one during the 2016 model year.

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