This page covers 3 recalls and 20 owner complaints for the 2017 Mercedes-Benz B 250e.
Complaints about the 2017 Mercedes-Benz B250e center heavily on the drivetrain and propulsion system. The most frequently reported issue involves coolant loss triggering warning lights, with owners describing low-coolant alerts appearing unexpectedly during normal driving, sometimes followed by the car commanding an immediate shutdown or going into a coast-down condition while at highway speed. Several owners report the vehicle losing drive power entirely, displaying urgent stop warnings, and requiring a tow. A separate cluster of powertrain complaints describes unexpected loss of propulsion and stalling without prior warning. One owner reports an abnormal noise and loss of drive engagement when attempting to shift into park at low speed, with the dealer diagnosing a transmission fluid issue. The coolant-warning-to-shutdown sequence is the dominant pattern across multiple reports.
20
Total Complaints
By System
The 2017 Mercedes-Benz B 250e has 3 recalls, the most serious being an airbag that can deploy without warning and a steering shaft universal joint that can separate and cause complete loss of steering control.
On the steering side, the shaft's bore hole can allow excessive movement over time until the universal joint bearing breaks free entirely, leaving the driver unable to steer. The airbag concern involves the driver's frontal airbag deploying on its own, which raises the risk of injury and could cause a crash. There is also a concern with the automatic crash notification system: if the vehicle is in a collision, the eCall system may send emergency responders to the wrong location, delaying assistance when it is needed most.
At a glance
What can fail
The steering shaft bore hole may be oversized, allowing the universal joint bearing to move excessively and potentially separate over time.
What the fix does
Dealers will inspect the steering shaft and replace it if necessary at no cost to you.
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Complaints are owner-reported and reflect individual experiences, not confirmed defects. They are distinct from recalls. Data sourced from the national vehicle safety complaint database. See trending complaints →
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The communication module software may fail to send your vehicle's correct location to emergency services when the eCall system activates during a crash.
What the fix does
A dealer will update the communication module software, or the update will be sent over-the-air, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The driver's airbag may deploy unexpectedly if the steering components lack proper grounding and the airbag clockspring is broken, allowing electrostatic discharge to trigger deployment.
What the fix does
Dealers will add grounding to the steering components to prevent electrostatic discharge from triggering the airbag.
Summarized — see the official notice for exact wording, dates, and contacts.
