Most common 2015 Mercedes-Benz B-Class Electric problems
Share of the 25 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mercedes-Benz B-Class Electric complaints by model year
Best B-Class Electric years: 2016. Years to avoid: 2015. Compare all years →
2015 Mercedes-Benz B-Class Electric recalls (2)
Communication
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2013-2017 vehicles due to a software fault that may cause the date and time for the emergency call system (eCall) to differ from the actual date and time, potentially relaying an inaccurate vehicle location.
Remedy: MBUSA has initiated an Over the Air (OTA) remote update. MBUSA will also notify owners, and dealers will check software for a successful OTA or update the communication module software as needed, free of charge.
Electrical system › Propulsion system › Traction battery
Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2014-2015 B-Class Electric Drive vehicles manufactured November 21, 2013, to May 26, 2015. Due to a communication error within the electric drive system, the electric powertrain unit may shut down, temporarily immobilizing the vehicle and resulting in a loss of…
Remedy: MBUSA will notify owners, and dealers will update the electric drive system software, free of charge. The recall began on December 2, 2015. Owners may contact MBUSA customer service at 1-800-367-6372.
NHTSA defect investigations
Federal safety investigators have looked into 2 possible defects involving the 2015 Mercedes-Benz B-Class Electric:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
Pedestrian alert sounds
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles.
What 2015 Mercedes-Benz B-Class Electric owners say
Transmission & drivetrain
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 HAVE SIMILIAR PROBLEM STEERING IS TIGHT AGAIN, MAKING FLAPPING NOISE, DEALER RECOMMENDED REPLACEMENT OF POWER STEERING RACK, GEAR BOX 07/02/24 , MERCEDES HAS RECALL ON MANY MODELS DURING YEAR 2015-2018 FOR electric power steering systems, Mercedes says the cars use electric power steering systems that May have soldered contacts that weren't soldered correctly inside the control units. …
Vehicle stopped suddenly and would not restart. Needs a new $17k drive unit and is out of warranty. Drive unit failed due to faulty design where coolant contaminated the electric motor. Vehicle only has 40k miles. The drive unit was built by Tesla for Mercedes. Tesla also built the same unit for Toyota for the electric Rav4. Toyota recalled their units free of charge for customers. Mercedes is aware of this issue and refuses to extend the warranty or recall the roughly 4000 B250E cars that they sold in the USA from 2014-2017.
Fuel & propulsion system
The main electric drive motor will start leaking coolant which then damages the motor and even electronics. Well known issue and makes the vehicle unsafe and isn't a matter of "if" but "when" the seals will go bad and this is on our car that has less than 40k miles on the odometer.
My 2015 Mercedes Benz b Class Electric drive lost power during my evening commute today leaving me stalled in traffic. I was not able to make it across all 5 lanes of a busy freeway to the shoulder before coming to a complete stop halfway between two lanes (one of which was a busy merge lane from sfo airport). I tried to restart it (keyless) a couple of times without success- no messages on dash, rest of electronics (radio etc) still working fine. I did notice that the gauge dropped down to full "charging" as if the regenerative system were fully engaged but not all the way to off which seemed odd. I hit the sos/assistance button to ask them to send chp since I was blocking traffic and genuinely feared for my safety. While on the phone with them some guys stopped and tried to push me to the shoulder since I was only 3/4 of a lane away but the car would not move at all. …
Engine & cooling
The main electric drive motor will start leaking coolant which then damages the motor and even electronics. Well known issue and makes the vehicle unsafe and isn't a matter of "if" but "when" the seals will go bad and this is on our car that has less than 40k miles on the odometer.
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 displayed. The car appeared normal except the guage was showing full regenerative braking while the car was coasting. Transmission was in d-auto. Power steering worked, ac and radio were still on. I brought it to a stop. Pushed the button to turn it off. At that time all the lights on the dash lit up. I pushed it again and the car was back to normal with the indicator showing zero between regeneration and discharge. I finished the drive without further incident. …
2015 Mercedes-Benz B-Class Electric engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined | Range |
|---|---|---|---|---|
| Electric | Single-speed | FWD | 85 / 82 / 84 MPGe | 87 mi |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2015 Mercedes-Benz B-Class Electric a good car?
Based on 25 owner complaints filed with NHTSA, the 2015 B-Class Electric rates use caution: 1.9× as many complaints as a typical year of the B-Class Electric at the same age. It is one of the B-Class Electric years we suggest avoiding. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2015 Mercedes-Benz B-Class Electric?
The transmission & drivetrain — 14 complaints, 56% of all complaints for this model year. Next are the fuel & propulsion system (10) and engine & cooling (7).
How many recalls does the 2015 Mercedes-Benz B-Class Electric have?
There are 2 recalls for the 2015 Mercedes-Benz B-Class Electric, the most recent from November 1, 2019 (communication). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Mercedes-Benz B-Class Electric?
The best years by complaints, compared at the same age, are 2016. Years to avoid or approach with caution: 2015. See the full Mercedes-Benz B-Class Electric years comparison.
At what mileage do 2015 Mercedes-Benz B-Class Electric problems happen?
The median mileage reported in complaints is about 2,000 miles; 100% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.