There is a reason a 1991 BMW 850i, 300 horsepower car costs only $9425 (fair condition).
There were under 1200 (maybe less) sold in the US, and the cars had serious electrical problems. And BMW didn’t stock the replacement parts in N. America. And the battery would randomly drain within hours, leaving the car stranded. 850i owners were on a first name basis with the dealership loaner car valet guys.
A friend of the family slowly lost his mind trying to keep his 850i on the road. His solution was to buy two cheaper Alfa Romeos.
i think my buddy has one of those, but it may be a 500. drains the battery often. has some screwy thing going on with the parking lights, turns out it has seperate circuits for each side. after hours of troubleshooting I found it was one of the relays bad. after all that work my buddy still hasnt bought that relay lol.