1) All of these cars are market cars. Mark x is not a very hot cake in the market these days but yea you wont make a big loss on it or something, so lets conclude this as, all these have good resells but Altis has always had quite low resell but after the arrival of grande, the resell will now improve. So all these cars has fine resell values. Dont worry about that.
2) Comfort wise Mark X, nothing beats its Comfort, luxury, great japanesse built.
3) As mark x has a bigger cc powerfull engine hence it consumes a bit more than corolla and civic. Corolla is the lowest fuel consuming amongst civic and mark x.
4) Depends, the spares of corolla are cheaper than civic, then civic has cheaper than mark x. But if you drive correctly then oil filter and oil changing and brakepads and stuff wont cost you too much for all three cars. So be fine with it.
5) Safety wise, if you get a mark x with no major accident and verifiable auction sheets and 8f you believe that the.airbags are totally in functioning condition then mark x is the safest otherwise civic then corolla.
6) very simple! Mark x will blow up civic and corolla like smoke behind it. mark x is hell powerfull car.
7) I guess all three of them. (I would have taken mark x out but since its a jdm so I wont).
8) Luxury is Mark X then comes Civic.
9) Mark X ! Its a rear wheel drive. You kick the pedal by half and you spin that s**t. (Some.people dont like it as it easily loses traction and spin its tail when accelerated a bit much).
10) Civic and Corollas are very common so Id again say Mark x.
11) Mark X definitely!
12) To me Mark X than corolla 2014.
PLEASE NOTE: My post does not intend to offend any civic/corolla/pkdm lover/owner. Its totally based on my knowledge and personal opinion.