Consumer Reports rates the Outlander among the better small SUVs and gives it their highest rating of "Recommended". Reliability is better than average and they favor the 4-cylinder models over the V6. The V6 averaged 19mpg overall in their tests compared to 22mpg for the 4cyl. The V6 is quicker, but the 4-cylinder is more than adequate (in their opinion).
As for Mitsubishi Motors continuing sales operations in the U.S., there are no guarantees. They have sworn that they have no plans to abandon the U.S. market (as recently as a few weeks ago) but there can only operate at a loss for so long before throwing in the towel! They are successful in other parts of the world, so they would still be making cars...just not selling them here. If they ceased U.S. opertions, they would probably commit to providing parts and service for all existing cars for at least 10 years. The warranty would also remain valid.
The biggest risk you'd be taking is that the resale value would take a hard hit. If you plan to keep it for four or five years, I wouldn't worry about it. If it's the car you want, go for it! But if you haven't considered the Hyundai Tucson also, it's worth a look before making your final decision...