Just out of curiosity, what's starting to fail on it? I have a mid=2012 and perhaps I should start worrying...
I'm not the OP but my 2011's GPU is failing for the second or third time and on also had a mobo replacement for a failed RAM slot... lol so getting ready for logic board #4!
Seriously, I just had nearly everything fixed for free including a new screen and all outer case parts along with the logic board/keyboard/wifi card/hard drive this past spring when they took it in... and this past month it's started glitching out again, albeit few and far between this time so far (loading a game on Steam does it for sure if I want to trigger it). Been taking pictures and video of it when it happens so I can go dump it off to get fixed one last time as soon as I have a new machine (always do this — last time I went in, they couldn't dupe the problem for 2 days of testing but would've done the repair if I had pics/video to prove it).