Back in 2006 when we were buying Lancer, many people said that it has parts issue, manufacturing fault, no resale etc etc but going against the norm we bought that car and today, almost 9 years later, Alhamdulillah that car is still there just having driver side door and fender resprayed that too because of some moron who hit my parked car back in 2010.
We have taken it to AJK, Multan, mostly to Lahore and Chakwal and not even once did the car ever break down or anything.
Alhamdulillah it never gave ANY sort of serious issue, currently it has around 83,000 km on the odo and now 9 years later it requires only some maintenance expense that too related to engine belts and slight suspension issue, other than that, the car is running flawless Masha Allah
As for the spare parts, everything is available, if you want brand new go to the 3S they have everything this car needs, if you want used parts, they are available in all major used parts markets, no problem at all.