Thanks all! Today I get delivery of a 2017 B-Class that we are buying from Carvana!! Hopefully we don't have any issues.

@HarrisonB, is the noise the same as the noise that @AnasAwad filmed in the video?

First time. Newbee here. My wife and I are considering purchasing a used B-Class 250e. We like many things about it. Today we test-drove our first - a 2014 B-Class 250e. We noticed this whistling noise. We would describe the noise more that of a jet engine sound. It is exactly the sound heard in the...