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What 25 owners told NHTSA about the 2015 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 (25)Transmission & drivetrain (14)Fuel system (10)Engine (7)Speed control (6)Electrical system (5)Steering (2)

2 of 25 complaints match · Steering · clear filters

Jul 6, 2024SteeringTransmission & 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. The bad contacts can cause a sudden loss of power steering while driving, causing serious problems if driving around a curve or at slow speeds.

NHTSA ODI 11599546

Jul 21, 2015SteeringTransmission & drivetrainSpeed control

THUMP! COMPLETE LOSS OF POWER ON FREEWAY. RANDOM SHIFT TO NEUTRAL ISSUE. DRIVING HOME FROM THE PURCHASING THE CAR ON THE 101 SOUTHBOUND IN THE FAST LANE GOING 65 MPH. ACCELERATION WAS SUDDENLY LOST. THE POWER TRAIN MALFUNCTIONED AND SHIFTED ITSELF INTO NEUTRAL. THE GAS PEDAL WAS UNRESPONSIVE. HAD TO PULL OVER AT WOODMAN EXIT ON INERTIA ALONE. WE HAD JUST PURCHASED THE CAR ONLY 2 HOURS PRIOR TO THIS INCIDENT AND PUT 30 MILES ON THE ODOMETER. NO WARNING LIGHTS APPEARED. MY RESEARCH ON THIS ISSUE SHOWS THAT IT IS THAT SAME ISSUE THAT HAS CAUSED THE RAV4 EV RECALL. THIS ISSUE IS EXTREMELY DANGEROUS AND IS AFFECTING MANY OTHER B-CLASS OWNERS.

NHTSA ODI 10735507

Working with the data? Download all 25 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 2015 Mercedes-benz B-class E-cell verdict →