I have owned both cars before, Corolla and Civic that is before I moved on to other models.......
On paper or some magazines, comparing the both, Civic have a better FC compare to Corolla.
However, when I am driving both, I realise that Corolla has a better FC than Civic. Corolla is also more comfortable.
BUT, Civic is seriously more fun to drive! If you have extra cash, you can give other maker a run for their money with some simple modification. (H)
End of the day, if you want Comfort and lower running cost, go for Corolla!
If you want fun in driving, go for Civic.
If you really have the money, go for Premio!!!