Uhmmm I dunno...depends what you want from the movie.
Story: 2
Action: 6.5
Sweet cars: 8
Adreniline rush: 11
Overall it was fantastic, I loved it. It is really really mindless though. But it's one of the funnest (as in fun, not funny) movies I've watched in a long time.
Don't go expecting a good story and you shouldn't be dissapointed.
It's alot of fun to watch

But we have a dragstrip here in town, and I love going to the Friday night Street-legal races, even when I don't participate (We have a 1/4 mile drag, a 1 mile oval and 2 mile road course at race city).
Go expecting a good story and you will feel dumber after watching
Can't beat the sound of a 19
70 Dodge Charger with a blown 426 Hemi rumbling to life on a Famous Players Paramount quality sound system
(You will note my bolding of the 70, the movie claims it to be a 69 charger, which it is not, it's a 70).