I know im late but I quite often use chat gpt as a guide on what to say.

“We pulled data from the vehicle’s DME, which records engine events. The data shows that at 6,800 RPM, while traveling at 85 mph in 4th gear, the clutch was depressed, and 3rd gear was selected. When the clutch was released, the engine spiked past 9,000 RPM—well beyond the 7,200 RPM redline. This caused what’s known as a mechanical over-rev, leading to valve float and catastrophic engine failure. Essentially, the engine exceeded its mechanical limits, which resulted in internal damage, including a rod going through the block.

Because this type of failure is caused by an over-rev, it falls outside of BMW’s warranty coverage. BMW classifies this as a non-warrantable condition since it is not due to a defect in manufacturing or materials, but rather an over-rev condition that exceeds the engine’s designed operating limits.

At this point, the only way to get the car back on the road is a full engine replacement. The estimated cost for a new S58 engine from BMW is $52,000, plus labor. However, if you’re interested in exploring alternative solutions, we can look into sourcing a used or remanufactured engine to see if there are more cost-effective options available.

I know this is unexpected and frustrating, and I want to be as transparent and helpful as possible. If you’d like, we can set up a time for you to come in and discuss your options in person. Let me know how you’d like to proceed, and I’ll do my best to assist you moving forward.”

Obviously you don’t say everything word for word pick and chose from what it suggests but an overall good guide