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What 21 owners told NHTSA about the 2014 Mercedes-benz B-class E-cell

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (21)Transmission & drivetrain (10)Electrical system (8)Engine (6)Brakes (3)Fuel system (3)Engine & cooling (1)Speed control (1)Visibility & wipers (1)

1 of 21 complaints match · Speed control · clear filters

Jul 24, 2015Electrical systemSpeed controlEngine

I WAS CRUISING DOWN A PRETTY BUSY MAIN STREET. AS I WAS TRYING TO MANUEVER IN TRAFFIC, I SENSED THAT AS I WAS PRESSING ON THE GAS, THE CAR WAS UNRESPONSIVE. I LOOKED AT THE DASH AND NOTICED THE CAR HAD MOVED ITSELF INTO NEUTRAL. I TRIED TO TURN THE KEY, BUT NOTHING HAPPENED. THE CAR WAS UNRESPONSIVE, BUT STILL ON (FROM THE LOOK OF THE DASHBOARD). I QUICKLY TRIED TO COAST TO THE SIDE OF THE ROAD, IN BETWEEN SPEEDING TRAFFIC, WHICH WAS VERY DANGEROUS, AS I WAS NEAR THE HIGHWAY ONRAMP AREA. ONCE I SAFELY PULLED ASIDE, I TRIED TO AGAIN TURN THE CAR ON USING THE KEY. AGAIN THE CAR WAS UNRESPONSIVE. I TURNED THE KEY TO THE OFF POSITION AND PULLED THE KEY OUT. WHEN IN THE OFF POSITION, ALL THE LIGHTS ON THE DASH LIT UP. I PULLED THE KEY OUT AND REINSERTED IT AND TURNED THE KEY AND THE CAR CAME BACK ON AND BEGAN TO DRIVE NORMALLY.

NHTSA ODI 10743359

Working with the data? Download all 21 complaints as CSV · fetched from NHTSA July 25, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2014 Mercedes-benz B-class E-cell verdict →