If your steering wheel isn't straight, if your car is 'dog-tracking', or if your rear tires are wearing unevenly/prematurely you may have a problem. The only real way to know for sure is to have your alignment checked. I suggest doing it at an indy shop with no skin in the game.
Mitsubishi isn't the only manufacturer to have this issue.
Thank you again cobrajet.
Man, I'm going to obsess about this steering wheel thing until I can get the alignment checked. It appears to me to be dead on, but I suppose it could be off a degree or two (which is a very small amount). It certainly is not off an amount that you would notice at first without really studying it. I think it is ok though.
On a more pleasant note, I just drove to a store about 35 miles away in a smallish town notorious for its bad traffic and when I got home, the computer tells me that I got 51.7 mpg!
I'll leave it at that because I don't want to derail the OP's thread anymore than I have already.
There have been a lot of people post alignment data, and it is rare that all 4 wheels are within spec...even on a new Mirage. So even if your rear axle is OK, there's a decent chance your front end needs some adjustment.
I had my alignment checked for free before my car had 1,000 miles on it. My rear axle was OK, but my front end was out of spec. I took it back to the dealer and they aligned it for free. It was inconvenient but it didn't cost me anything. It also saved me some unnecessary tire wear.
View my fuel log 2015 Mirage ES 1.2 manual: 51.4 mpg (US) ... 21.9 km/L ... 4.6 L/100 km ... 61.8 mpg (Imp)