So I mostly just wanted to say thank you to forum members here for pointing out the rear alignment issue on these cars. It really helped me out a lot with my new (to me) Mirage. I bought my used 2014 with 13.5K miles in July after watching the price steadily drop for a few months at the dealership. They had a carfax for the car available, and a red flag was that the car had two tire rotations and two new tires mounted/balanced within the 13K miles of the car's life. Test drove the car twice, and was surprised by how much I liked it. Decided to enter negotiations on the car, but made it clear to the sales staff that I wanted some guarantee about the rear alignment before I signed anything. I was assured it was "no big deal." I asked to see alignment specs, but was told the printer wasn't working (seems to be a common response from them). I asked for a new alignment test, and was told the service staff had gone home for the day. After refusing to move forward, they--surprise surprise--found a staff member after all who could do an alignment test. I wasn't savvy enough to snap a picture with my phone, but the test came back with horrible rear alignment specs (I asked for a copy of this too, but amazingly, that darn printer just wasn't working again! What a coincidence!). I said I'd still be willing to buy the car if I could get in writing that the rear alignment would be fixed under warranty. I was assured this was no problem. The finance manager came over to make small talk with me at this point and be friendly.
Next the sales manager came over to butter me up. Said he doesn't think the alignment is a big problem, he'd only heard of one instance of it, and they're happy to take care of it, and it's probably a tire rotation issue. He then tells me that it's normal for tires to wear out in 13K miles. Hmmm...I almost walk out after this insult to my intelligence.
Negotiations continue. The price is right. I ask for sales contract to have a written guarantee that the rear axle will be repaired so the alignment is in spec. My salesperson agrees, goes to the sales manager to get it in writing, and comes back with a guarantee saying that the alignment will be checked. I tell her this is not what the agreement was. The sales manager comes over and is clearly exasperated with me, blaming me for having a hangup for something that isn't a big deal. I refuse to budge. In the end, he does the right thing: we halt the sale, and has the service department check it out the next morning.
Surprise surprise, a problem is found!
^^Note: I didn't complain about the car pulling to the right. Not sure why that was included, but they replaced the axle, so I wasn't about to split hairs about it.
At this point, after this many months of trying to sell the car, I think they were motivated to get it off the lot. They agreed to replace the axle under warranty with no further BS. I agreed. A week later the axle was replaced. Amazingly, the printer was working this time, and I got a printout of the new alignment specs! How lucky! Specs aren't perfect, but at least it is within specifications.
I doubt they'd have gone to this much effort if they weren't desperate to sell the car, so I felt I had some unusual leverage in this situation. Sorry to all the forum members who have had to deal with unresponsive dealerships and Mitsubishi refusing to acknowledge the issue, as it really is unacceptable. Perhaps there'll be a recall yet. On my end, I made some noise, which at least helps the overall cause. And though this may not be of any help to those dealing with this problem, I really appreciate everyone who took the time to post in this forum, who posted alignment photos and specifications, and who shared their experiences. It really helped me out, informed me, and saved me a headache down the road. Good karma to you all!