My rough guess is that the outgoing 2nd gen Innova is still in high demand and is cannibalizing the sales of the Zenix.

In my mind (arguably, others too), I think of the Innova brand is known to be something that is decently refined, rugged, powerful, reliable.... not to mention Diesel-powered (for the most part).

To me, the Zenix is a totally different vehicle and the only thing going for it is really just the slightly bigger interior space, a few more creature comforts, and a hybrid option.