I like my 2008, haven't had any problems with it other than the manual trans not liking to shift into 2nd gear!
It's been a good car to me. Can't complain on the gas mileage. I wouldn't have any of the common problems with a '12 or '13 as I'd only get the S model with 5 speed ... it has everything I need in a car.
2011 Focus SE 5 Speed.