I am 19 years old and bought bmw 745d from 2005 and its been pretty nice. Didnt have any mayor problems with it yet. I just dont know why is 745d version so rare.
I have had one for 8 years. Done about 2,100 miles. Car done 48,000 miles in total. Has been reliable. However petrified the valve stem oil seals will go. Had a 735i and it cost me $8,000 to replace these. Car fell apart after about 100,000 miles. A car not for the faint of heart. p.s. My mechanic loves these cars. They paid for his last trip to Europe.
I bought mine from a dealer. Actually a stealer. It has low miles 43k. The day I drove it home. 22 miles. The car was done. It showed pull over immediately stop engine add oil. The dreaded alternator bracket gasket leak. I never fixed it. This was March 2021. The vehicle is a monument on why you don't buy a used vehicle. Cause they are junk.