is the 4 cyl reliable,FWD,at 145000km

Hello, maybe other Sorento owners can chime in -- but if I was in your shoes, I would be researching the rest of this web site for the specific vehicle in question by searching by vehicle like this: https://repairpal.com/reviews/kia-sorento-2012 And then also via the rest of the Internet to see what the general feedback is. A general rule on acquiring a pre-owned vehicle would be to have it thoroughly inspected by a certified and trusted technician near you before buying it. This way it can be fully inspected before you take on any kind of discoverable issues. Typically, the history and life of the vehicle prior to your owning it is what matters -- I don't have a sense this vehicle is "bad", but if the previous owner(s) did not take care of needed maintenance on time and consistently, any vehicle can suffer from that. Good luck!