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What 9 owners told NHTSA about the 2016 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 (9)Engine (5)Airbags (3)Electrical system (2)Steering (1)Tires (1)Transmission & drivetrain (1)Wheels (1)

2 of 9 complaints match · Electrical system · clear filters

Dec 27, 2021Electrical systemEngine

2021-11-29, 10a PST. The "check coolant level" warning appeared while I was driving westbound on the 210 freeway in Glendale, California. As I took the exit to La Crescenta Ave, another alert appeared that there was a sudden "malfunction: visit workshop" warning. As I was trying to turn off on a side street to pull over (with my 4 year old in the back seat), the car stopped in the middle of the road and would not start back up again. Some good citizens helped me push my car up the hill to the side street where I could safely park the vehicle. There are other accounts of this issue occurring with this vehicle, apparently the coolant leaks into the engine and the electric drive motor needs to be replaced. The repair cost is prohibitive ($17,000) and my car is 4,000 miles out of warranty.

NHTSA ODI 11445157

Mar 19, 2018Electrical systemAirbags

MERCEDES NOTIFIED ME VIA LETTER OF A SAFETY PROBLEM WITH MY LEASED 2016 B250E IN NOVEMBER 2017 BUT SAYS PARTS AREN'T AVAILABLE UNTIL OCTOBER 2018. SO I AM DRIVING AN UNSAFE VEHICLE UNTIL THEN?

NHTSA ODI 11080257

Working with the data? Download all 9 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 2016 Mercedes-benz B-class E-cell verdict →