reliable cars are few and known..lets make the list of unreliable..based on real experiences:
BMW 740i: (Company owner i worked for)right out of showroom the computer malfunctioned. Went ok vacation to workshop for 6 months.
BMW 520: (friend) Leaked brake oil and check engine light on right from showroom.
Mercedes S Class (w140): (mine) This car raped my income for a full year. Can never forget this money pit.
Honda Accord: (friend's) a bunch of things always wrong.
Pegout 307: (co-worker) A car ritually French!