How much would l have to pay a month if l bought Porsche 911 (Carrera S), per month?

... and would percentage of a net income should be ideal to pay towards a car payment?

About 15 % +

That would depend on how many months your loan is. What the percent of interest your paying. And how much the total price is. You can find loan calculators with google.

Christ, man, why are you asking us ??!!

A 2007 Carrera S has a base price of just over $80k. However, u will be unlikely to find an unoptioned car on a dealer lot, & might be less likely to work out any kind of deal if u were to order one (if that is what u wanted). Assuming u were to take delivery of one in dealerstock, & work out a bit of a discount, & tax & license will bring u out to a final price around $95k.

For a going rate of 6.98% on a 48 month loan, with $20k down, u would have a monthly payment of just under $1800 a month. However, the fact that u r asking some of these questions & wondering how much u can afford suggests u cannot afford this. Keep in mind that even if the $20k down & $1800 a month seem like they might be almost within reach, there will be insurance costs & maintenance. Both will seem costly if u r already stretching to just afford the car. which will also not be ideally suited as ur only vehicle.

If you are worried about car payments, dont do it.

If you want a nice carrera, buy a 2001ish 911. you can get a very nice one for around 30 grand, and they are wickedly awesome cars. l owned one for about 5 years. Was very happy with the car.

Take to a loan officer at a bank or at the dealership is finance office, since this is a concern to you.

Almost as much as the insurance premium. You can not afford it.