Quick math says you can based on data you provided.
Will it be advisable to spend half of your salary in car? It depends on your need (or is it want

If having a car adds to your cash flow but if not then it is going to be a debt for you and you are losing money by financing a property that goes down in value.
Personally I would not spend 50% of income, I feel this is a lot more comfortable at 25% or less.
I definitely agree with Qwerty on the save strategy. Delay the purchase, put your 20k a month in a savings and let it grow,in 3 and a half years time you have enough to buy a brand new car. By that time, there will be a brand new Civic model for you. If you purchase this model now, you will still be paying for it when the 2006 model body. A lot of changes can still happen between now and your purchase but when that time comes, walk proudly to your car dealer and haggle because you are paying hard cash
