Nothing at all. Except there is a slight wind noise even when all the windows are rolled up.
The ride is smooth, the gas mileage is great, its pick up is decent when passing someone, and the comfort is good. The trunk has good space, the only downfall would be 1) the radio it came with which I replaced with something better and 2) the fact it does not come with an armrest on the drivers side. Other than those 2 minor details, it's the best car yet.
I agree with comments, however I must say the clear coat is peeling off from my 1999 Honda Civic SP.