2017 Mercedes-Benz B-Class Safety Report

2017 Mercedes-Benz B-Class B250e has significant risk of electric drive unit failure due to coolant leaks.

20Complaints
0Recalls
45/100Reliability Score
Most reported components: Engine (4)Power Train (3)Power Train,Electrical System,Engine (2)Power Train,Fuel/Propulsion System (2)Power Train,Electrical System,Fuel/Propulsion System (1)Electrical System,Unknown Or Other,Fuel/Propulsion System (1)Electrical System,Engine (1)Power Train,Engine,Fuel/Propulsion System (1)Electrical System (1)Power Train,Engine (1)

AI Safety Analysis for the 2017 Mercedes-Benz B-Class

The 2017 Mercedes-Benz B-Class, specifically the B250e electric variant, presents a concerning safety picture primarily due to a prevalent and potentially severe issue with its electric drive unit. While the vehicle has a low total complaint count (20) with no reported crashes, fires, injuries, or deaths, and no recalls, the nature of the complaints is significant. A substantial number of complaints revolve around the electric drive unit failing due to coolant leaks. This failure can lead to sudden loss of power, stalling while driving at speed, or the vehicle shifting into neutral unexpectedly, posing a serious risk to occupants and other road users. The problem is described as a known issue affecting this model and similar electric vehicles using this powertrain, with repair costs estimated to be very high, often around $18,000-$20,000, and potentially not covered by warranty if it recurs. NHTSA crash test ratings are not available for this specific model year and trim, leaving a gap in objective crashworthiness assessment.

Reliability Score

The 2017 Mercedes-Benz B-Class receives a reliability score of 45 out of 100 based on analysis of NHTSA complaint data, recall history, crash reports, and safety ratings. This indicates average reliability — some notable concerns exist that prospective buyers should be aware of.

Known Issues for the 2017 Mercedes-Benz B-Class

The following issues have been identified from NHTSA complaint data and owner reports for the 2017 Mercedes-Benz B-Class:

IssueSeverityFrequencyTypical Mileage
Electric Drive Unit Coolant Leak And Failure
Coolant leaks into the electric drive unit, causing it to fail. This can result in sudden loss of power, stalling, or the vehicle shifting into neutral while driving, posing a significant safety hazard. Repair is costly and may not be covered by warranty if it recurs.		 High Common 23000-50000 miles
Sudden Loss Of Power/Stalling
Vehicle loses power unexpectedly while driving, sometimes accompanied by a 'Shut Off Immediately' warning, requiring towing and potentially indicating underlying drive unit issues.		 High Common 30000-60000 miles
Vehicle Shifts To Neutral Unexpectedly
The vehicle automatically shifts into neutral while driving or stopped, with no warning, creating a hazardous situation.		 High Common 30000-60000 miles

Common Problems Reported by Owners

Based on NHTSA complaint data, the following components account for the majority of reported issues with the 2017 Mercedes-Benz B-Class:

Engine/Drive Unit 40% of complaints

Complaints heavily focus on failures related to the electric drive unit, often attributed to coolant leaks.

Power Train 30% of complaints

Issues related to the overall power delivery and transmission of power from the electric motor.

Electrical System 20% of complaints

Failures and warnings related to the electrical components, often linked to the drive unit coolant issue.

Fuel/Propulsion System 10% of complaints

Complaints related to the propulsion system, particularly the electric motor and its associated systems.

Frequently Asked Questions About the 2017 Mercedes-Benz B-Class

Is the 2017 Mercedes-Benz B-Class safe?

Based on NHTSA complaint data, the 2017 Mercedes-Benz B-Class B250e has a significant known issue with its electric drive unit failing due to coolant leaks, which can cause sudden loss of power or stalling, posing a safety risk. Crash test data is unavailable.

What are common problems with the 2017 Mercedes-Benz B-Class?

The most reported issues involve the electric drive unit failing due to coolant leaks, leading to sudden power loss, stalling, or the vehicle shifting into neutral. Electrical system and power train issues are also noted.

Are there any recalls for the 2017 Mercedes-Benz B-Class?

According to the provided data, there are no recalls listed for the 2017 Mercedes-Benz B-Class.

What is the risk of drive unit failure?

The drive unit failure due to coolant leaks appears to be a common issue for the 2017 B250e, with multiple owners reporting it and describing it as a known defect that can lead to costly repairs.

What are the repair costs for the drive unit failure?

Owners have reported repair costs for the electric drive unit failure to be around $18,000 to $20,000, and this issue is known to recur.

Buyer Advice

Our recommendation: Exercise extreme caution when considering the 2017 Mercedes-Benz B-Class B250e due to a high likelihood of expensive electric drive unit failure caused by coolant leaks; ensure thorough inspection and consider extended warranty if purchasing.

NHTSA Data Summary for 2017 Mercedes-Benz B-Class

This safety report is based on a comprehensive analysis of data from the National Highway Traffic Safety Administration (NHTSA) for the 2017 Mercedes-Benz B-Class. The data includes 20 consumer complaints filed by vehicle owners, 0 manufacturer-initiated safety recalls, and safety rating assessments associated with this vehicle.

All data presented in this report is sourced from public NHTSA databases. Our AI analysis identifies patterns across complaint narratives, correlates them with recall history, and produces the safety assessment above. This analysis is updated as new complaints and recalls are filed with the NHTSA.

Consumers are encouraged to report vehicle safety problems to the NHTSA at nhtsa.gov. If your vehicle is subject to a recall, contact your dealer to schedule the free repair.