There are few cars that will match the E46 M3 performance per dollar ratio. Not just few cars, probably none. This E46 M3 hits 60mph in about 4.7 seconds and trips the 1/4 mile lights at 13.5 seconds and 105 mph. In case you were wondering, that is fast for a street car. But it isn't just a one trick pony, the E46 also features one of the nicest handling chassis this side of a Ferrari...and you can get one for about $10k. Find this 2003 BMW M3 E46 offered for $9999 in Philadelphia, PA via craigslist. Tip from K2 Mystery Car.
You'll see some cars listed on this site as being "fast", but from personal experience of driving an SMG E46 M3, I can say that the experience is truly exhilarating. It isn't just a straight line rocket, it also loves the curves with phenomenal grip that can be turned into tail sliding fun if you fancy drifting. The 3.2 liter S54 inline-6 is good for 333 horsepower as it revs to 8000 rpm, a fantastic powerplant for the masses. This one uses the sequential manual gearbox, which is essentially the 6-speed manual with an automatic clutch and gear selector. The system can be balky at low speeds and in parking lots, but at a boil (with the shift speed amped all the way up) the SMG is just fine, and probably faster (certainly more consistent) than the manual on a track. This one has a salvage title, but the price is extremely tempting.
See a faster car for $10k that is equally as ready for a daily drive? Probably not. But you can dream. email@example.com