All in all, it's a step forward from the original, but still retains much of the flaws and annoyances. Sonic Riders: Zero Gravity isn't the best racer on the market, and in the case of the Wii's catalogue it's not the worst either.
Sonic fans will be chuffed to see regulars making appearances, and the storyline coming together as the game progresses. However, much more work is needed in control and difficulty to tighten up a potentially good formula. Perhaps only for the hardcore fans of the blue wonder then.