I was hesitant to commit to the 2012 SI because the EPA estimates are not very impressive.
But I took a gamble figuring if I was disappointed, I could easily trade due to the high resale value.
I have just under 6000 miles on it so far in about 6 weeks.
In mixed driving my worst tank of gas was 32 mpg.
Best so far was over 37 (with a bit of neutral coasting at exit ramps, etc).
As the car "breaks in", it really feels like it's getting quicker.
It's great fun to drive.
Much more torque than my '08 EXL.
Interior noise is not quite, but is acceptable.
My '08 interior is a bit classier.
But I'm getting used to the '12.
Smooth 6 speed.
Much better mileage than I expected.
Not a rocket, but great performance for the price.