BMW 540i G30 2017–2023 owners — what actually went wrong with yours?

I'm looking to buy a 2017–2023 BMW 540i G30, most likely around 50–75k miles, and plan to keep it until at least 130k+.

I'm looking for personal ownership experiences, especially the more niche G30/B58 issues that aren't just normal maintenance.

If you've owned one, I'd really appreciate:

1. Major or unexpected repairs you've had
2. Mileage when each issue happened
3. Any preventative maintenance you recommend

I'm particularly interested in more niche experiences such as:

• NVLD / EVAP
• Active grille shutters / air flaps
• A/C evaporator
• Guibo / flex disc
• Center support bearing / driveshaft
• Differential / differential mounts
• Water pump / thermostat / cooling system
• ZF 8HP / mechatronics / valve body
• Advanced suspension options, if equipped
• Any other G30 540i-specific issues you've personally experienced

I'm not concerned about normal maintenance like oil, tires, brakes, etc. I'm trying to understand what I could realistically encounter buying one at 50–75k and taking it to 130k+.

Stock cars preferred for comparison.

If you've owned one to 100k, 130k, 150k+, I'd especially like to hear how it's held up.

Also, in market for BMW 540i G30 RWD 40–70k miles, fully optioned interior+exterior, but prefer stock wheels, brakes, and suspension options.