B-Class E-Cell (2014)
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 2014 Mercedes-Benz B-Class E-Cell
That's about 2.1x 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 12 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.
Propulsion battery defects, capacity loss, BMS faults, replacement claims.
Regen brake feel, one-pedal driving, B-mode complaints.
Low-voltage battery deaths, common on EVs and hybrids that use a 12V for accessories.
Sample complaint excerpts
Electric Propulsion
- [2014] The contact owns a 2014 Mercedes-Benz B-Class Electric Drive. The contact stated that after stopping at a stop sign, the vehicle lost motive power before the "Malfunction visit workshop" and "Stop switch engine off" messages were displayed. After restarting the vehicle, the vehicle returned to normal functionality; however, the failure recurred more frequently. No warning lights were illuminated.
- [2014] Coolant leak causing catastrophic drive unit failure.
- [2014] Motor suddenly stopped on highway. This was extremely dangerous. Vehicle transported to Mercedes Benz, they have indicated the electric drive motor has failed. This is the second drive motor in this car that has failed in only 48K miles. We have two of these cars, same year and model. The motor has also failed in the other vehicle. There is an entire Facebook group talking about failures of
High-Voltage Battery
- [2014] TL* THE CONTACT OWNS A 2014 MERCEDES BENZ B250E. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 30 MPH, THE BATTERY LIGHT FLASHED AS THE VEHICLE BEGAN TO LOSE POWER. DESPITE THE FAILURE, THE CONTACT WAS ABLE TO COAST THE VEHICLE TO HER HOME. THE NEXT DAY, MULTIPLE ATTEMPTS WERE MADE TO START THE VEHICLE AS SEVERAL WARNING LIGHTS APPEARED ON THE INSTRUMENT PANEL. DUE TO THE FAILURE, THE CON
- [2014] VEHICLE BATTERY WARNING LIGHT CAME ON INSTRUCTING TO STOP DRIVING VEHICLE IMMEDIATELY. LIKE SO MANY OTHER OWNERS WHO HAVE FILED COMPLAINTS, MERCEDES DEALER-MECHANIC SAID THAT COOLANT HAD GOTTEN INTO BATTERY AND DRIVE UNIT NEEDS TO BE REPLACED. ESTIMATED COST $12,000 - RENDERING CAR TOTALLED. INDEPENDENT EV SPECIALIST HAS PRESSURE TESTED COOLING SYSTEM AND FINDS NO LEAKS. FORTUNATELY, I WAS IN A
- [2014] IN PREPARING TO LEAVE A PARKING LOT ON NOVEMBER 23, 2016 IN HILLSBORO, OREGON, THE B-CLASS MERCEDES-BENZ ELECTRIC DRIVE AUTOMOBILE REFUSED TO MOVE AND A MESSAGE APPEARED IN THE INSTRUMENT PANEL SAYING "HAVE ME TOWED TO A DEALER" OR SOMESUCH. VEHICLE WAS TRANSPORTED TO BEAVERTON, OREGON MERCEDES-BENZ WHERE THE DIAGNOSIS WAS A DEFUNCT MAIN TRACTION BATTERY. BATTERY, WHICH COSTS ABOUT 90 PERCENT OF
Regenerative Braking
- [2014] THIS IS AN ELECTRIC VEHICLE. IN NORMAL OPERATION, WHEN THE CAR IS SLOWING, AND ALMOST AT A STOP, IT COMES OUT OF REGENERATIVE BRAKING MODE, AND ENTERS THRUST MODE, SO THAT IF THE BRAKE IS RELEASED WHEN STOPPED, THE CAR WILL BEGIN TO ROLL. IN THIS VEHICLE, SOMETIMES THE CAR EXITS REGENERATIVE BRAKING MODE AND ENTERS THRUST MODE WHEN SLOWING AT HIGH SPEED, SUCH AS WHEN EXITING A HIGHWAY RAMP. THI
12V Auxiliary Battery
- [2014] EXTREMELY DANGEROUS SUDDEN LOSS OF POWER WHILE DRIVING 70+ MPH ON BUSY HIGHWAY. WAS ALMOST INVOLVED IN A SERIOUS TRAFFIC COLLISION BECAUSE IT A STOPPED IN THE ROAD. ATTEMPTS TO RESTART THE VEHICLE FAILED. COULD NOT GET THE VEHICLE OUT OF "PARK" AND WAS UNABLE TO SWITCH IT INTO "NEUTRAL" TO ROLL THE VEHICLE OUT OF THE LANE OF HIGH SPEED TRAFFIC. THE INABILITY TO GET THE VEHICLE INTO "NE
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 2014-2014 Mercedes-Benz B-Class E-Cell complaints?
Owners have filed 21 complaints with NHTSA about the 2014-2014 Mercedes-Benz B-Class E-Cell. The systems they name most often are the transmission, the electrical system and the engine.
Is the 2014-2014 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 21 complaints with NHTSA about the 2014-2014 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 2014-2014 Mercedes-Benz B-Class E-Cell have?
NHTSA has 21 owner complaints on file for the 2014-2014 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 2014-2014 Mercedes-Benz B-Class E-Cell?
NHTSA lists no recalls for the 2014-2014 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 electrical 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 2014 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. 21 complaints analyzed. Data confidence: low. Last updated: 2026-10-12.