Total Complaints
10 filings
MERCEDES-BENZ B-CLASS ELECTRIC · model year
10 NHTSA complaints for this specific cohort.
NHTSA overall rating
Not crash-tested
New Car Assessment Program
The 2016MERCEDES-BENZB-CLASS ELECTRIC carries 10 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. No NCAP 5-star crash-test rating is available for this model year in the federal database.
Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2016 B-CLASS ELECTRIC is engine with 3 filings, followed by wheels (1) and tires (1). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability.
NHTSA currently has 15 investigation files overlapping the 2016 B-CLASS ELECTRIC. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.
Total Complaints
10 filings
Crashes Reported
0 reports
Source
NHTSA ODI
Federal complaints database
At or below the fleet median complaint volume.
| Component | Count |
|---|---|
| ENGINE | 3 |
| WHEELS | 1 |
| TIRES | 1 |
| STEERING | 1 |
| AIR BAGS | 1 |
| ELECTRICAL SYSTEM | 1 |
| POWER TRAIN | 1 |
| UNKNOWN OR OTHER | 1 |
Drive unit failed. Manufacturer's Faulty coolant seal. Coolant leaked into engine, Dashboard displayed "Workshop" warning about 2-3 times before breakdown.
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The issue was diagnosed by the Mercedes Atlanta South dealership as a catastrophic electric drive unit failure caused by a coolant leak due to a faulty rotor seal. I was quoted a price of $12K-$20K to replace the EDU. I declined the service while trying to get assistance from Mercedes customer care, so the vehicle is still in an inoperable condition and available for inspection. This issue has happened to countless B250e drivers, and it is completely unsafe to allow these cars to continue driving without recall since the engine can shut down while driving, and become completely inoperable, with lit
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The issue was diagnosed by the Mercedes Atlanta South dealership as a catastrophic electric drive unit failure caused by a coolant leak due to a faulty rotor seal. I was quoted a price of $12K-$20K to replace the EDU. I declined the service while trying to get assistance from Mercedes customer care, so the vehicle is still in an inoperable condition and available for inspection. This issue has happened to countless B250e drivers, and it is completely unsafe to allow these cars to continue driving without recall since the engine can shut down while driving, and become completely inoperable, with lit
On 4/19/22 while driving my Mercedes B250e, I received a 'check coolant level' warning message, followed closely by 'without starting engine again, consult workshop' and then 'stop, switch engine off'. All messages appeared in less than 30 minutes time, and then my engine completely shut off while I was pulling into a parking lot. Prior to this date, there were no warning signs of the issue. The issue was diagnosed by the Mercedes Atlanta South dealership as a catastrophic electric drive unit failure caused by a coolant leak due to a faulty rotor seal. I was quoted a price of $12K-$20K to replace the EDU. I declined the service while trying to get assistance from Mercedes customer care, so the vehicle is still in an inoperable condition and available for inspection. This issue has happened to countless B250e drivers, and it is completely unsafe to allow these cars to continue driving without recall since the engine can shut down while driving, and become completely inoperable, with lit
2021-11-29, 10a PST. The "check coolant level" warning appeared while I was driving westbound on the 210 freeway in Glendale, California. As I took the exit to La Crescenta Ave, another alert appeared that there was a sudden "malfunction: visit workshop" warning. As I was trying to turn off on a side street to pull over (with my 4 year old in the back seat), the car stopped in the middle of the road and would not start back up again. Some good citizens helped me push my car up the hill to the side street where I could safely park the vehicle. There are other accounts of this issue occurring with this vehicle, apparently the coolant leaks into the engine and the electric drive motor needs to be replaced. The repair cost is prohibitive ($17,000) and my car is 4,000 miles out of warranty.
2021-11-29, 10a PST. The "check coolant level" warning appeared while I was driving westbound on the 210 freeway in Glendale, California. As I took the exit to La Crescenta Ave, another alert appeared that there was a sudden "malfunction: visit workshop" warning. As I was trying to turn off on a side street to pull over (with my 4 year old in the back seat), the car stopped in the middle of the road and would not start back up again. Some good citizens helped me push my car up the hill to the side street where I could safely park the vehicle. There are other accounts of this issue occurring with this vehicle, apparently the coolant leaks into the engine and the electric drive motor needs to be replaced. The repair cost is prohibitive ($17,000) and my car is 4,000 miles out of warranty.
2016 MERCEDES-BENZ B CLASS. CONSUMER WRITES IN REGARDS TO INSUFFICIENT ELECTRICAL GROUNDING SAFETY RECALL. *LD THE CONSUMER STATED THE RECALL REPAIR EXCEEDED A REASONABLE AMOUNT OF TIME. *JS
2016 MERCEDES-BENZ B CLASS. CONSUMER WRITES IN REGARDS TO INSUFFICIENT ELECTRICAL GROUNDING SAFETY RECALL. *LD THE CONSUMER STATED THE RECALL REPAIR EXCEEDED A REASONABLE AMOUNT OF TIME. *JS
TL* THE CONTACT OWNS A 2016 MERCEDES BENZ B-CLASS ELECTRIC EQUIPPED WITH HANKOOK TIRES, TIRE LINE: EVENT EMT, TIRE SIZE: 225/55/CR1797W, AND DOT NUMBER: BCKC1AH2116. THE CONTACT STATED THAT ALL FOUR TIRES ABNORMALLY PREMATURELY WORE OUT. ALL FOUR TIRES WERE REPLACED ON THREE OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER BUT THE FAILURE WAS UNABLE TO BE DETERMINED. THE TIRES WERE REPLACEMENT TIRES. THE FAILURE MILEAGE OF THE VEHICLE AND TIRES WERE 40,306.
Mileage: 40,306
TL* THE CONTACT OWNS A 2016 MERCEDES BENZ B-CLASS ELECTRIC EQUIPPED WITH HANKOOK TIRES, TIRE LINE: EVENT EMT, TIRE SIZE: 225/55/CR1797W, AND DOT NUMBER: BCKC1AH2116. THE CONTACT STATED THAT ALL FOUR TIRES ABNORMALLY PREMATURELY WORE OUT. ALL FOUR TIRES WERE REPLACED ON THREE OCCASIONS. THE VEHICLE WAS TAKEN TO A DEALER BUT THE FAILURE WAS UNABLE TO BE DETERMINED. THE TIRES WERE REPLACEMENT TIRES. THE FAILURE MILEAGE OF THE VEHICLE AND TIRES WERE 40,306.
Mileage: 40,306
Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.
Read our methodology — how this data is sourced, computed, and verified.