Well here on pakwheels if u are corolla owner /fan u will should be ready to be labelled as gujjar ,paindo and GOD knows what
Any how as far as regarding your question
Consumption wise people usually get 8 to 10 km/litre in city .On highway about 12 to 14 km litre .About resale rest assure it will sell as easily as a civic provided u keep it neat and clean.....................condition of car matters a lot ....people have sold there lancers and sunny at very good prices because the condition of car was very good.
As far as depriciation is concerned you loose money when u buy high end car zero meter first owner usually looses the most after that it all depands how well u keep it......
Its a lovely car with same engine as the new corolla and much better breakes .....
Try searching threads for altis u will know how many people get interested in it ....
If u like it go for it
sooochiiiii piyaa tay bunda giya