Looks like the Mario & Sega all-star's mario kart clone doesn't have DLC Sega almost though that it would.

"You know I'd only win the race anyway, Sonic"

Unsurprisingly, Wii DLC is also out
In a recent Q&A about Sonic & SEGA All-Stars Racing with The Kartel, producers Omar Woodley, Dan Gallardo were popped the million-dollar question: was Mario ever considered for the race?
Everything is a possibility. It definitely was discussed way early on in development, but just the fact that we have the whole separate “Mario and Sonic” series; well frankly we didn’t want to cross contaminate them.
Also in the same interview, they confirmed that downloadable content would not be made available for the Wii version of the game due to memory constraints. This will sadly only be an Xbox 360/PlayStation 3 exclusive. The full interview can be read here.


We here Nintendo Life Towers feel that SEGA should cross contaminate all they want, giving the Wii version a leg up for exclusive fun. Maybe next time.
heres the link gonintendo.com