It depends a lot on the class. Next time either just search the forums or ask the question clearly. Has it ever occured to you that if you asked this question somebody could think you were talking about the fastest 2 litre 4 door car in the world...?
Things to consider
Type:
Track Car
Street Car
Professional Racer (WRC, DTM, etc etc)
Fastest in what?
Top Speed
Acceleration
Again, fastest where?
In a straight line
On a track
On the streets
Fastest in which price range?
00,000 - 50,000
50,000 - 100,000
100,00 - ?
And so it goes on and on ^^
Fastest what?
2 Door Coupe
4 Door Sedan
5 Door Hatch/Wagon
What engine size?
1l
2l
3l
4l
5l
6l
Then, status:
Road legal
Not road legal
Showroom status?
Few made
Many made
Showroom status II
Sold
Not sold
Type
Concept
Prototype
Production
Limited Manufacturing
Feel free to add on.....
If nobody's noticed I've decided to vent out my anger on this thread....
Ah, whatever