I honestly have never thought about it. I am on my third car and I'm only 18.

Car 1:
Body Kit:600
Wheels:400
Spoiler:300
System:1000
paint:250
Misceleneous:800

$3300

Car 2:
Payments $7k
Tint:170
Wheels and tires:550
exhaust:250
Intake:150
Springs new strut and labor:500
System:900

est. $9500

Car 3 is really not gonna have much done to it. I put a short throw and a k&n in it the car already had a chip in it. College will pretty much have me tied up for the next 4 years im going to be saving up to have a down payment on a supra when i get out.