Civic no doubt have better handling and road grip. Its drive on motorway will be a class above City. Civic is C-Segment sedan, so it must have more space. Civic is better looking car.
New City have better comfort due to soft suspension (when compared to Civic X), comfortable and adjustable seats. Apart from comfort City have better road clearance. City's fuel economy is better and parts are cheap.
If Civic X is oriel, then there isn't much difference in acceleration due to power to weight ratio. Both vehicles do 0-100 in about 10 sec. The best time for 1.5 City with CVT and 1.8 Civic is same and i.e. 9.7 sec.
City 0-100
Civic 0-100
This may not matter to you, but I am giving you an idea that Civic X with 1.8 engine is not that powerful. If you want power, then 1.5 turbo is the right choice.
I gave you pros of both vehicles. Rest is your choice