Not near as bad as the past Simpsons games but still not great.
The gameplay was awkward, I can honestly say that some of the cars had pretty bad control. It was actually 20% difficult to make some turns without running into something. The gameplay could have used a lot of improvement, but its not too awful as to be un-playable, just sometimes hard.
The graphics were bad, I'm sorry. The graphics seemed pretty bad for the GameCube and too un-detailed and dull, lacking a lot of color. The Simpson charecters looked pretty strange themselves. Graphics needed work, no doubt about it.
The sound is the best thing about this game. You have good music with funny sound effects and real Simpsons voice acting. I have to say, The Simpsons games have good voice acting.
The value is a 8, You might want to keep playing since it has a lot to unlock by collecting money, but maybe not after it. Its probably a on and off game to play.
My over-all tilt to this game is a 8 for bad graphics, strange gameplay, great sound, and medium value.