B-Class E-Cell (2015)
Reliability Score
Complaints by Engine Code
Mercedes-Benz B-Class E-Cell Unidentified Engine
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Complaint Breakdown
Battery & Propulsion Reliability
Battery Electric (BEV)
Battery & propulsion complaint analysis for the 2015 Mercedes-Benz B-Class E-Cell
That's about 1.9x the typical rate for BEVs in this dataset (median 5.7 per year). Above peer average — but high-volume models naturally produce more raw complaints, so check the issue mix below before drawing conclusions.
What kind of battery complaint?
Among the 11 battery-related complaints, here's the type mix. These percentages describe what the complaints are about — not how reliable the vehicle is overall.
Loss of power, drive unit, inverter, traction motor, DC-DC converter.
Regen brake feel, one-pedal driving, B-mode complaints.
Sample complaint excerpts
Electric Propulsion
- [2015] MERCEDES DEALER NOTES : 07/19/2022 CLIENT STATES STEERING IS STIFF. STARTED ABOUT 1 TO 2 MONTHS AGO AND WOULD SHOW UP ONCE AND AWHILE. WHEN IT WOULD ACT UP WOULD NOT DRIVE IT AND IT WOULD LOCK THE STEERING . THIS HAPPENED MULTIPLE TIMES, WITH ACCIDENT HAZARD. WE DID THE BELOW WORK. ELECTRIC POWER STEERING RACK FAULTY REPLACE COMPLETE ELECTRIC POWER STEERING RACK. WHICH COST US OVER $3000. NOW WE
- [2015] The electric motor was leaking coolant and needs to be replaced. I have read countless accounts that this is a known issue with this car.
- [2015] Failure of seals and or bearings in the electric motor causing coolant to leak into the electric motor, creating an internal electrical fault, seizing electric motor.
Regenerative Braking
- [2015] MY B-CLASS ELECTRIC HAD A SUDDEN LOSS OF POWER. HERE'S THE DETAILS: LEFT THE HOUSE IN SAN DIEGO AT 7:00 AM. OUTSIDE TEMPERATURE ABOUT 75+DEGREES. ABOUT 1 MILE FROM THE START, I BRAKED SLIGHTLY TO MAINTAIN SPEED OF ABOUT 25 MPH, COASTED TOWARDS AND UPHILL, PUT MY FOOT ON THE ACCELERATOR TO MAINTAIN SPEED AND THERE WAS NO POWER-JUST COASTING. THERE WAS NO UNUSUAL SOUND AND NO WARNING DISPLAYE
Source: classified from NHTSA complaint and recall data. "Battery-related" includes high-voltage propulsion battery, charging system, hybrid drivetrain, electric propulsion, regenerative braking, 12V auxiliary battery, and thermal-event complaints. Other complaints (suspension, steering, brakes, infotainment) appear in the engine and vehicle-level sections. Rates are absolute counts, not normalized per-VIN — high-volume models naturally produce more raw complaints than low-volume ones. Self-reported death and injury counts are capped per complaint to limit form abuse.
Owner Complaints by System
Complaints owners filed with NHTSA about the Mercedes-Benz B-Class E-Cell, counted across every engine. A complaint can name more than one system.
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Frequently Asked Questions
What are the most common 2015-2015 Mercedes-Benz B-Class E-Cell complaints?
Owners have filed 25 complaints with NHTSA about the 2015-2015 Mercedes-Benz B-Class E-Cell. The systems they name most often are the transmission, the fuel system and the engine.
Is the 2015-2015 Mercedes-Benz B-Class E-Cell a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 25 complaints with NHTSA about the 2015-2015 Mercedes-Benz B-Class E-Cell. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2015-2015 Mercedes-Benz B-Class E-Cell have?
NHTSA has 25 owner complaints on file for the 2015-2015 Mercedes-Benz B-Class E-Cell as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2015-2015 Mercedes-Benz B-Class E-Cell?
NHTSA lists no recalls for the 2015-2015 Mercedes-Benz B-Class E-Cell.
What should I check before buying a used Mercedes-Benz B-Class E-Cell?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the transmission, the fuel system and the engine, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
Does the B-Class E-Cell have NHTSA crash test ratings?
NHTSA has not published crash test ratings for the 2015 Mercedes-Benz B-Class E-Cell. Not all vehicles are tested each year. For the latest NHTSA safety information, visit nhtsa.gov/ratings.
Data from NHTSA federal complaints database. 25 complaints analyzed. Data confidence: low. Last updated: 2026-10-12.