2014 Mercedes-Benz B-Class Electric Drive Rated at 87 Miles Range, 84 MPGe

Daimler’s second mass-produced all-electric car, the 2014 Mercedes-Benz B-Class Electric Drive, has been given an official EPA range rating of 87 miles per charge. 

The B-Class Electric Drive gets 87 miles per charge on the EPA test cycle, at 84 MPGe

The B-Class Electric Drive gets 87 miles per charge on the EPA test cycle, at 84 MPGe

Based on the existing gasoline Mercedes-Benz B-Class sold in Europe, the all-electric B-Class Electric Drive features a 132 kilowatt Tesla-engineered drivetrain and 28 kilowatt-hour lithium-ion battery pack. Despite that heritage, the B-Class Electric Drive isn’t quite as quick as Tesla’s famous Model S sedan. Then again, at 7.9 seconds from 0-62mph in Sport mode, the B-Class Electric Drive is still plenty fast enough to give most cars a run for their money.

In fact, the B-Class Electric Drive is fairly evenly matched in terms of performance and price with its closest competitor, the BMW i3 EV. While the BMW i3 manages the sprint to 62 mph a little more quickly than the B-Class, the B-Class’ 87 mile EPA-approved range just beats that of the 2014 BMW i3 EV.

When it comes to efficiency however, the much larger Mercedes-Benz B-Class Electric Drive is one of the most inefficient all-electric cars on the market today, thanks to its 3,900 pound curb weight. Despite that 28 kilowatt-hour lithium-ion battery pack, the B-Class Electric Drive has a fuel economy rating of just 84 MPGe, putting it well behind that of the Nissan LEAF’s 114 MPGe, the BMW i3’s market-leading 124 MGPe and even the 89 MPGe of the Tesla Model S P85.

The B-Class travels further than the i3 on a full charge, but it uses far more energy to do so.

The B-Class travels further than the i3 on a full charge, but it uses far more energy to do so.

In other words, while the B-Class Electric Drive will go further on a charge than either the Nissan LEAF or BMW i3, it will use substantially more electricity to do so than either. Given that the B-Class Electric Drive is a luxury segment family hatchback however, that’s unlikely to dissuade buyers from picking it over the similarly-priced, less-conventional BMW i3.

Ultimately, that’s the B-Class Electric-Drive’s real trump card. While the entry-level BMW i3 is $100 cheaper, the B-Class Electric Drive doesn’t have the i3’s quirky looks, boasts three — not two– rear seats, and packs more load carrying capability than BMW’s ultra-efficient carbon fibre reinforced plastic creation.

In short, it’s more conventional looking, and more likely to entice a conventional car buyer to a plug-in lifestyle — than the BMW i3.

Do you agree? Leave your thoughts in the Comments below.


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  • Ed Logan

    Is this 87 mile range before or after the range extender option? I’m guessing before.

    • cheesegypsy

      It’s before. I have the RAV4EV, and the EPA range is way too low. I’m betting you get around 105 miles on an 80% charge, 125-130 on 100%. 87 miles with heat on full blast, perhaps. The other bonus for the Benz is the solid, proven battery pack. I’m about 20k miles in and I can’t measure any range loss.

  • Surya

    87 is quite good, but as expected that is due to a bigger pack, because it never looked very efficient.

  • Ad van der Meer

    I am missing charging options. DC fast charging?

    • Surya

      I don’t think that is an option, which makes this car a no-go in my book. Yes, people charge at home the vast majority of the time, but the point is of course that they do charge on the go sometimes, and in those cases you want it to go really fast.

  • How much is total range?! You’re only giving the MPGe which is Gas to Electricity comparison on efficiency.

    • Maxwell Erickson

      It says total range = 87 miles, MPGe = 84

  • Patrick McCallum

    love our B Class is many ways however 3 major flaws that need to be addressed by Mercedes:nn1) no scheduled charging! unforgivable omission by Mercedes. was told by dealer the car and or app would have this functionality. Settings in the car seem to suggest timed charging vs simply preconditioning climate . software upgrade needed. a $40-50k EV should be smarter than a $500 EVSE !! so much for grid load balancing and saving on off-peak electricity rates…nn2) glitchy, almost unusable “app” to monitor and control the car. syncing is painful and requires logout/login every time. overall a disappointment and is an embarrassment to Mercedes Benznn3) no indication of state of charge, this means a b class driver cannot be a good citizen at a public charge station when its ok to disconnect the car when fully charged 🙁