The Tesla motor used in the B-Class ED / B250e is shared with the 2012-2014 Toyota RAV4 EV.
As the RAV4 fleet is older, the motor problems are well known. Leaking coolant is known that can enter the inverter and damage the electronics.
Bearings wearing out is known (with motor noise).
We have begun doing motor rebuilds and replacements for the RAV4 EV, and we will extend that service to the Mercedes.
Also, we will offer package deals to repair or replace the motor with a JdeMO fast charge kit.
Quick Charge Power LLC
1780-104 La Costa Meadows Drive
San Marcos, California 92078 USA
1-760-798-0342 Office, M-F, 9-5 Pacific Time