I loved this game so much as a child and just because of that love i can't rate it lower. I've replayed it recently and it's still as fun as it was in my childhood.
It's a racing game and races are quite good, but that's probably my bias. There's a pretty big open map to explore at any time which is great. Also some minigames that i hated as a child, but now find it just mid.
If you look at this game objectively, it's 6.5-7/10, but for me it'll forever be a 10.