In the offician Nintendo Uk Magazine affirms that the Mario Kart Wii support up to 16 players online.

    

Yeah about up to 16 players is true.Well if you check on e3 in that video of mario kart that Reggie show us they were more than 8 players and also he says more players means more fun.Thank You!

NL_LINK

Hello readers of nwiizone.com! This is Drew Bergmark of Halo3-Tourney.com to inform you of the correct answer. It is not 16 players, it is not 8, but it is 12 player multiplayer. I have been doing research for this game for months since I first saw the real box art. My sources point me to believe it is only 12, and anyways if its 12 with no servers, have fun lagging ur way to the finish line Nintendo fan boys. If anyone has any questions, you have 2 ways of contacting me!

Also did they actually confirm 16 players? nope look at what this “factual article” says:

“Did we also mention online battles cater for up to 16 players?”

I ask you is that a statement or a question.
My XBLGT is ViggoTheCarp and my email is viggothecarp@halo3-tourney.com. Have good Spring everyone!

Wii Games!!!!!!!!!!!!!!!!!!!!!!!!!!! Phailure 4 life