Hi All.I am new on this forum but am a BMW owner for 14 years starting with an M5 e34 which was sheer driving pleasure. I moved on to a 328 e46 which was also bliss but then now i am driving a 2006 320i E90 which is the worst by a mile. The passenger door just jammed on me; it smokes like shosholoza ; coil once packed up etc. Now it wont start. i just want to know how much it costs to overhaul the engine in preparation for an auction sale.