I am planning to get a 2010/2011 E90 320D idrive. Is it worth it at rm90-80k?

My current ride is 2011 Peugeot 308thp... I am hoping that gives me the experience/expectation from continental car... service, repair cost, resale value etc. Should I be ready for any unexpected-unpleasant-worse experience if I get a used E90 320D?

Any owner can give more advice?

* please dont be hard on me and shoot me... "if worry about money, then you not ready for bmw" or "just get a new one if you worry" because yeah, I can't afford the new one unfortunately

Thanks for the budget guide... I'll say my current car maintenance.. probably about rm4k-5k per year. This year maybe will be a bit more because i just spend rm3.5k for top overhaul the engine... Other time.. rm500-rm1000 for random items. AC compressor changed during warranty period costing rm 3k+, seems like BMW compressor still cheaper?

May I know what is the biggest amount of repair/replacement that one can expect from the car? Timing chain broken?