i have a red sonic and no, I'm actually just starting to buy stuff for my car. I haven't bought anything yet, full stock. Just thought I'd start with a spoiler
May I suggest some options that I think (subjective opinion alert) will work better on your car? You don't have to break the bank and they will actually be useful, unlike the spoiler, which does nothing but add weight.
- tinted windows for better privacy and sun/heat reduction
- clear bra to protect your paint from rock chips
- a good set of brake pads for the front
- perhaps a tune, even?
- good quality neoprene seat covers, made specifically for the Sonic, which will protect the interior from wear and tear (a set is about $260).
- a better set of tires than those that come stock
All of these and more, are useful mods and none of them will break the bank. Tires are likely the most expensive item on that list, being around $400 installed.