oh my.. Kaify, have you actually read the manual? I guess you were too busy with other things such as taking off the plastic around the seat... and getting 0-100 is important on your way to school or your other responcibilities...
There is a break in period of 1200 miles or 2000 Km and BMW requests not to drive over 4500rpm as well as avoiding full-trottle operation. and thats only for the engine, there is also a break in for tires, brakes, etc...
There is always time for fun, and BMW's are made for that, but why dont you first read the manual, get to know your car follow BMW reccomendation and then really enjoy the Ultimate Driving Machine.
BTW. I am sure after the break in, your 0-100 and your gas economy will get better, but then again, you never broke your car in, so we dont even know if it will ever give you its maximum performance.

FYI. Break in information on page 128 of US manual and its first page of driving tips.