for the 1st link, i previously went to OKR autocity last mth but was unable to locate the car so left the area.
the 1st concern when buying a bimmer, i must look at the mileage if it passes the 100k km mark ensure a top overhaul is done, u can look at the grey sealant gasket at the engine head. like my e90 was 117k kms when i bought it, it was previously overhauled, try to smell the exhaust fumes too make sure no burnt smell, after starting the car & engine warmed up, switch it off, open the engine oil cover & smell inside too for burnt smell.