Engine Oil Leaking problems of the 2013 BMW 335

I loved my BMW until I realized it has a faulty engine. I noticed the drive train malfunction light once when I went through a car wash. I turned off when I restarted the car. My car was up to date on all oil changes etc, I take it to BMW specialist only. I noticed a light tick sound and reported it to BMW at my last oil change. They disregarded it and said they did notice oil on the gasket. No changes requested at that time. My car never showed signs of leaking oil and the oil pressure at times showed to be low but would always return to normal. I was told it was because the hybrids work differently. On my way home on the frontage road of i35 my car just shut down and never restarted. I was able to guide it into a parking lot and the engine just stopped turning and the drive train malfunction light turned on. I had it towed to a mechanic and they basically said they had to replace the entire engine. A new engine cost $18000 and a used is around 13000. That does not include labor!!! I had to then have my car towed home to just park it. This is the only car I have, I owe thousands on it and the engine completely broke! as I'm doing research I see multiple complaints with the same issues and same result, complete engine failure!!! this needs to be investigated! from what I gather it is related to the drivetrain malfunction light sending a signal to the engine & stopping oil from reaching the top of the motor, leading to vanos complications and leading to metal in the engine leading to a complete damage to the engine. Cheap issue leading to failure of the entire vehicle. I've also gathered there is a fault with the start/stop that causes this issue. I am left with no car, I'm a full time nurse and now in debt with no working car! this could have been prevented had a recall been done a few years ago with all the initial complaints!! several forums including on this site!!.