What is the code?
2, front/rear, or as some say upstream/downstream.
Probably past any warranty coverage, but the 2012 comes with a 8 year 96,000 mile warranty on Federal Emission Controls and that covers the O2 sensors, but in CA, it's 7/70 unless a SULEV 15/150, but that's not the 2.0T engine.
Well that's worrisome, they either don't know about the sensors or are just trying to pull a fast one. Code is P0132. And you're right certainly past the warranty. Also bank 1 sensor 1...isn't that under the hood or is it under the car?
Here's the lowdown, a V motor e.g. 6, 8 cyl has 2 banks (exhaust manifolds) so one would have a bank 1 (where #1 cylinder resides), the other bank 2, but on a 4 in-line cylinder engine, there is only 1 bank.
Now for the sensors, #1 upstream, # 2 downstream, so after the description you are correct.