Looks like Injectors 5-8 RAIL 2 are mildly leaking, causing fuel dump. Not severe enough to throw codes. This in turn has caused the O2 sensor to fail. Carmax authorized replacement of the O2 sensor only. This car is out of any sort of warranty. So, the fuel injectors are not going to be replaced. * Of note the Miami dealer wanted to replace all 8 about 18 months ago. BMW only authorized 1-4, so that was done.
Second issue: Drivers side door has a short which is causing battery drain. They decided to replace the battery, but not the door handle. This is going to be a $2000 in parts + labor repair. Read on it gets better... The door handle is synced with the antennas all around the car. Thus, all remote antennas need to be replaced. Currently, the car thinks that someone is constantly touching the door handle. * It will validate my hesitation not to buy from them if they don't disclose that to me when I go in for my test drive.
So all in all if anyone buys this car, its about $4000-6500 worth of repairs out of the gate. Make sure you get the best aftermarket warranty.
I'm going to see if CarMax will consider replacing the door handle and injectors.
None the less, if anyone is interested in this car, its here in Houston.
https://www.carmax.com/car/13802257
WBSFV9C5XDC773062