My 120 CDTI 54 plate vectra has done 100,000 miles and recently it's needed a fair bit of work. On previous dieseIs 150k was fine but I have found the Vectra a bit unreliable. Apart from small fixes I am wondering what major bits are likely to go next. I am trying to decide whether to part ex the car, or stay with it. So far I,ve replaced the following, Clutch and flywheel( Expensive), alternator( Not cheap either), all discs, glow plugs, suspension springs. Advice greatfully received.

Thanks