I guess you have to figure these things out first...

1) How much is your monthly budget for the car? (Fuel, toll, misc expenses, parking etc)

2) Ano ba byahe mo araw araw (if you're using the car dialy), how far, what's your route and what time do you travel?

No one can tell you kung kaya mo to maintain a car (regardless of engine size) or not hehe.