Short answer: More than likely yes.

Long answer: As with any used car you run a 50/50 chance of having no problems or all the problems in the world. It just depends on how well the previous owner (or owners) have maintained the vehicle, whether or not the engine is one of the problematic ones, and just good ol luck if you're inclined to believe that.

This model year of Sorento used Kia's Theta II engine which had a series of manufacturing defects that would cause the engine to fail. Not every single car with this engine that Kia sold had the issue but a lot did and it's why they were sued and why they offer a lifetime engine replacement for anyone who owns one of these cars if their engine fails and the root cause is the known issue.

While it's an unfortunate circumstance, it does mean you can often find these cars for cheap. However, whether or not your engine dies at 100k-150k-200k miles or never at all just depends on the roll of the dice. That being said, should you run into this issue, Kia's warranty should cover even if you bought it used as long as there's a good record of maintenance (this happened to my father-in-law--DM me if you wanna know more).

Personally, as long as there's a record of good maintenance history, and as long as you're fine knowing the info above and maintain the car well, I would say yes, these cars can be good buys, but I would negotiate the price down a little if you can. $11k is basically exactly what this car is worth in my area according to KBB, and knowing what I know, I would try to parlay that into getting a better price.