Producer Takashi Iizuka said that there are no plans for a version currently, but the team is looking at how the system performs.
"We're not about thinking releasing [the] title on Vita at the moment, because it just came out," Iizuka told Digital Spy.
"We want to see how the market develops and see what happens."
When asked whether it depends on how successful Vita will be, Iizuka responded: "Yes."
Iizuka also revealed that there are no current plans for any more future Sonic 4 episodes.
Although Sonic 4: Episode 1 was released on WiiWare, the sequel will not be available through the digital download service.
Sonic 4: Episode 2 will be available on Xbox Live Arcade, PSN, PC, iOS, Android and Windows Phone later this year.
> Read our full interview for Sonic 4: Episode 2
> Digital Spy's hands-on preview of Sonic 4: Episode 2
Watch a trailer for Sonic 4: Episode 2 below: