I have a mixed feelings about Bemer Motor Cars.
I bought BMW128 from them two weeks ago.
The car currently runs great, however few things came up that could be considered as a fault on their end.
First, pressure sensor popped up just after few miles when I was already driving home from the dealership. Later I discovered that the tires were overinflated (45-50 psi instead of 32-35 psi). Interestingly, I couldn't reset this sensor after decreasing pressure back to normal. Overinflated tires posed a hazard to the driver actually and I am pretty sure they knew about this.
Second thing is more of my fault: I didn't notice a problem with a windshield washer system during my inspection. It turned out that the windshield washer jets are clogged, it's not a big problem but it is somewhat tricky to fix (requires removing one of the front wheels). They pretended like everything was totally fine, but this is obviously the lack of pre-sale tech service on their side.
Overall: OK experience, I love the car, however I would be cautious about the condition of cars at Bemer Motor Cars.