[sahara]

On Friday I bought a 2015 328xi Wagon. I knew about the N20 timing chain issues but I thought I would be safe by purchasing a 2015. Turns out, however, that my car was built in July 2014 so the engine is in the danger zone. My car has 60,500 miles on it and the extended warranty will expire in November 2021.

I have a couple of questions:

1) if the timing chain fails and grenades my motor while under the 7/70,000 warranty, do I get a whole new motor, or do I have to detect the problem and have it corrected before it gets that bad? Obviously I'll be listening for the noise at all times and being careful, but some have said it can occur without warning.

2) Should I buy an extended warranty for extra protection when the 7/70,000 expires or simply pay (about 50% of the cost an extended warranty) to have the timing chain done preemptively at that time?

Finally, how worried should I be overall? I'm pretty dismayed that I bought what I figured should be a relatively (it's still a BMW) reliable car compared to my previous daily, a '97 Z3, and now have to contend with this.